Air quality reference
Allentown-Bethlehem-Easton, PA-NJ
Allentown-Bethlehem-Easton, PA-NJ has a published AQI value of 46, categorized as Good, for 2026-03-31T00:00:00+00:00. The defining parameter is Ozone, based on 1 monitoring sites. AQI is a communication index rather than a direct pollutant concentration, and values from different dates, averaging periods or providers should not be treated as interchangeable. This profile provides measurement context and same-category links but does not provide individualized medical advice.
Key facts
- Location
- Allentown-Bethlehem-Easton, PA-NJ
- Air quality index
- 46
- Category
- Good
- Defining parameter
- Ozone
- Sites reporting
- 1
- Measured at
- 2026-03-31T00:00:00+00:00
- Measurement context
- Daily AQI summary from U.S. EPA AirData; values are not direct pollutant concentrations
Historical air-quality context
Published EPA annual CBSA indicators
Annual AQI summaries are shown independently from pollutant concentrations. Current-year values are provisional because reporting is incomplete and can be revised.
Annual indicator
Days with published AQI
90.00 days2026
EPA annual CBSA summary field: Days with AQI. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 90.00 days | provisional-current-year | — |
| 2025 | 365.00 days | — | — |
| 2024 | 366.00 days | — | — |
| 2023 | 365.00 days | — | — |
| 2022 | 365.00 days | — | — |
| 2021 | 365.00 days | — | — |
| 2020 | 366.00 days | — | — |
| 2019 | 365.00 days | — | — |
| 2018 | 365.00 days | — | — |
| 2017 | 365.00 days | — | — |
| 2016 | 366.00 days | — | — |
| 2015 | 365.00 days | — | — |
| 2014 | 365.00 days | — | — |
| 2013 | 365.00 days | — | — |
| 2012 | 366.00 days | — | — |
| 2011 | 365.00 days | — | — |
| 2010 | 365.00 days | — | — |
| 2009 | 365.00 days | — | — |
| 2008 | 366.00 days | — | — |
| 2007 | 365.00 days | — | — |
| 2006 | 365.00 days | — | — |
| 2005 | 365.00 days | — | — |
| 2004 | 366.00 days | — | — |
| 2003 | 365.00 days | — | — |
| 2002 | 365.00 days | — | — |
| 2001 | 365.00 days | — | — |
| 2000 | 366.00 days | — | — |
| 1999 | 365.00 days | — | — |
| 1998 | 365.00 days | — | — |
| 1997 | 365.00 days | — | — |
| 1996 | 366.00 days | — | — |
| 1995 | 365.00 days | — | — |
| 1994 | 365.00 days | — | — |
| 1993 | 365.00 days | — | — |
| 1992 | 366.00 days | — | — |
| 1991 | 365.00 days | — | — |
| 1990 | 365.00 days | — | — |
| 1989 | 365.00 days | — | — |
| 1988 | 366.00 days | — | — |
| 1987 | 365.00 days | — | — |
| 1986 | 365.00 days | — | — |
| 1985 | 365.00 days | — | — |
| 1984 | 366.00 days | — | — |
| 1983 | 365.00 days | — | — |
| 1982 | 365.00 days | — | — |
| 1981 | 362.00 days | — | — |
| 1980 | 365.00 days | — | — |
Annual indicator
Good AQI days
63.00 days2026
EPA annual CBSA summary field: Good Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 63.00 days | provisional-current-year | — |
| 2025 | 244.00 days | — | — |
| 2024 | 250.00 days | — | — |
| 2023 | 194.00 days | — | — |
| 2022 | 207.00 days | — | — |
| 2021 | 182.00 days | — | — |
| 2020 | 234.00 days | — | — |
| 2019 | 223.00 days | — | — |
| 2018 | 180.00 days | — | — |
| 2017 | 103.00 days | — | — |
| 2016 | 85.00 days | — | — |
| 2015 | 122.00 days | — | — |
| 2014 | 147.00 days | — | — |
| 2013 | 126.00 days | — | — |
| 2012 | 95.00 days | — | — |
| 2011 | 101.00 days | — | — |
| 2010 | 109.00 days | — | — |
| 2009 | 153.00 days | — | — |
| 2008 | 136.00 days | — | — |
| 2007 | 129.00 days | — | — |
| 2006 | 156.00 days | — | — |
| 2005 | 101.00 days | — | — |
| 2004 | 98.00 days | — | — |
| 2003 | 100.00 days | — | — |
| 2002 | 100.00 days | — | — |
| 2001 | 91.00 days | — | — |
| 2000 | 108.00 days | — | — |
| 1999 | 159.00 days | — | — |
| 1998 | 265.00 days | — | — |
| 1997 | 282.00 days | — | — |
| 1996 | 266.00 days | — | — |
| 1995 | 254.00 days | — | — |
| 1994 | 209.00 days | — | — |
| 1993 | 269.00 days | — | — |
| 1992 | 293.00 days | — | — |
| 1991 | 244.00 days | — | — |
| 1990 | 288.00 days | — | — |
| 1989 | 262.00 days | — | — |
| 1988 | 233.00 days | — | — |
| 1987 | 240.00 days | — | — |
| 1986 | 246.00 days | — | — |
| 1985 | 216.00 days | — | — |
| 1984 | 196.00 days | — | — |
| 1983 | 190.00 days | — | — |
| 1982 | 226.00 days | — | — |
| 1981 | 187.00 days | — | — |
| 1980 | 158.00 days | — | — |
Annual indicator
Hazardous AQI days
0.00 days2026
EPA annual CBSA summary field: Hazardous Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 0.00 days | provisional-current-year | — |
| 2025 | 0.00 days | — | — |
| 2024 | 0.00 days | — | — |
| 2023 | 1.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 0.00 days | — | — |
| 2020 | 0.00 days | — | — |
| 2019 | 0.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 0.00 days | — | — |
| 2016 | 0.00 days | — | — |
| 2015 | 0.00 days | — | — |
| 2014 | 0.00 days | — | — |
| 2013 | 0.00 days | — | — |
| 2012 | 0.00 days | — | — |
| 2011 | 0.00 days | — | — |
| 2010 | 0.00 days | — | — |
| 2009 | 0.00 days | — | — |
| 2008 | 0.00 days | — | — |
| 2007 | 0.00 days | — | — |
| 2006 | 0.00 days | — | — |
| 2005 | 0.00 days | — | — |
| 2004 | 0.00 days | — | — |
| 2003 | 0.00 days | — | — |
| 2002 | 0.00 days | — | — |
| 2001 | 0.00 days | — | — |
| 2000 | 0.00 days | — | — |
| 1999 | 0.00 days | — | — |
| 1998 | 0.00 days | — | — |
| 1997 | 0.00 days | — | — |
| 1996 | 0.00 days | — | — |
| 1995 | 0.00 days | — | — |
| 1994 | 0.00 days | — | — |
| 1993 | 0.00 days | — | — |
| 1992 | 0.00 days | — | — |
| 1991 | 0.00 days | — | — |
| 1990 | 0.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 0.00 days | — | — |
| 1987 | 0.00 days | — | — |
| 1986 | 0.00 days | — | — |
| 1985 | 0.00 days | — | — |
| 1984 | 0.00 days | — | — |
| 1983 | 0.00 days | — | — |
| 1982 | 0.00 days | — | — |
| 1981 | 0.00 days | — | — |
| 1980 | 1.00 days | — | — |
Annual indicator
Maximum daily AQI
98.00 AQI index2026
EPA annual CBSA summary field: Max AQI. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | AQI index | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 98.00 AQI index | provisional-current-year | — |
| 2025 | 122.00 AQI index | — | — |
| 2024 | 119.00 AQI index | — | — |
| 2023 | 368.00 AQI index | — | — |
| 2022 | 118.00 AQI index | — | — |
| 2021 | 154.00 AQI index | — | — |
| 2020 | 117.00 AQI index | — | — |
| 2019 | 119.00 AQI index | — | — |
| 2018 | 136.00 AQI index | — | — |
| 2017 | 119.00 AQI index | — | — |
| 2016 | 242.00 AQI index | — | — |
| 2015 | 119.00 AQI index | — | — |
| 2014 | 118.00 AQI index | — | — |
| 2013 | 134.00 AQI index | — | — |
| 2012 | 151.00 AQI index | — | — |
| 2011 | 154.00 AQI index | — | — |
| 2010 | 172.00 AQI index | — | — |
| 2009 | 117.00 AQI index | — | — |
| 2008 | 172.00 AQI index | — | — |
| 2007 | 169.00 AQI index | — | — |
| 2006 | 185.00 AQI index | — | — |
| 2005 | 166.00 AQI index | — | — |
| 2004 | 200.00 AQI index | — | — |
| 2003 | 203.00 AQI index | — | — |
| 2002 | 203.00 AQI index | — | — |
| 2001 | 204.00 AQI index | — | — |
| 2000 | 212.00 AQI index | — | — |
| 1999 | 217.00 AQI index | — | — |
| 1998 | 185.00 AQI index | — | — |
| 1997 | 207.00 AQI index | — | — |
| 1996 | 197.00 AQI index | — | — |
| 1995 | 207.00 AQI index | — | — |
| 1994 | 202.00 AQI index | — | — |
| 1993 | 197.00 AQI index | — | — |
| 1992 | 182.00 AQI index | — | — |
| 1991 | 208.00 AQI index | — | — |
| 1990 | 197.00 AQI index | — | — |
| 1989 | 166.00 AQI index | — | — |
| 1988 | 252.00 AQI index | — | — |
| 1987 | 218.00 AQI index | — | — |
| 1986 | 200.00 AQI index | — | — |
| 1985 | 201.00 AQI index | — | — |
| 1984 | 260.00 AQI index | — | — |
| 1983 | 225.00 AQI index | — | — |
| 1982 | 219.00 AQI index | — | — |
| 1981 | 206.00 AQI index | — | — |
| 1980 | 357.00 AQI index | — | — |
Annual indicator
Median daily AQI
40.00 AQI index2026
EPA annual CBSA summary field: Median AQI. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | AQI index | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 40.00 AQI index | provisional-current-year | — |
| 2025 | 42.00 AQI index | — | — |
| 2024 | 41.00 AQI index | — | — |
| 2023 | 48.00 AQI index | — | — |
| 2022 | 48.00 AQI index | — | — |
| 2021 | 51.00 AQI index | — | — |
| 2020 | 44.00 AQI index | — | — |
| 2019 | 46.00 AQI index | — | — |
| 2018 | 51.00 AQI index | — | — |
| 2017 | 56.00 AQI index | — | — |
| 2016 | 57.00 AQI index | — | — |
| 2015 | 56.00 AQI index | — | — |
| 2014 | 53.00 AQI index | — | — |
| 2013 | 55.00 AQI index | — | — |
| 2012 | 58.00 AQI index | — | — |
| 2011 | 59.00 AQI index | — | — |
| 2010 | 58.00 AQI index | — | — |
| 2009 | 54.00 AQI index | — | — |
| 2008 | 55.00 AQI index | — | — |
| 2007 | 56.00 AQI index | — | — |
| 2006 | 54.00 AQI index | — | — |
| 2005 | 60.00 AQI index | — | — |
| 2004 | 58.00 AQI index | — | — |
| 2003 | 60.00 AQI index | — | — |
| 2002 | 59.00 AQI index | — | — |
| 2001 | 61.00 AQI index | — | — |
| 2000 | 58.00 AQI index | — | — |
| 1999 | 53.00 AQI index | — | — |
| 1998 | 40.00 AQI index | — | — |
| 1997 | 40.00 AQI index | — | — |
| 1996 | 43.00 AQI index | — | — |
| 1995 | 43.00 AQI index | — | — |
| 1994 | 46.00 AQI index | — | — |
| 1993 | 42.00 AQI index | — | — |
| 1992 | 39.00 AQI index | — | — |
| 1991 | 43.00 AQI index | — | — |
| 1990 | 38.00 AQI index | — | — |
| 1989 | 42.00 AQI index | — | — |
| 1988 | 44.00 AQI index | — | — |
| 1987 | 44.00 AQI index | — | — |
| 1986 | 43.00 AQI index | — | — |
| 1985 | 46.00 AQI index | — | — |
| 1984 | 49.00 AQI index | — | — |
| 1983 | 49.00 AQI index | — | — |
| 1982 | 45.00 AQI index | — | — |
| 1981 | 50.00 AQI index | — | — |
| 1980 | 55.00 AQI index | — | — |
Annual indicator
Moderate AQI days
27.00 days2026
EPA annual CBSA summary field: Moderate Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 27.00 days | provisional-current-year | — |
| 2025 | 118.00 days | — | — |
| 2024 | 112.00 days | — | — |
| 2023 | 164.00 days | — | — |
| 2022 | 156.00 days | — | — |
| 2021 | 179.00 days | — | — |
| 2020 | 131.00 days | — | — |
| 2019 | 138.00 days | — | — |
| 2018 | 180.00 days | — | — |
| 2017 | 261.00 days | — | — |
| 2016 | 270.00 days | — | — |
| 2015 | 237.00 days | — | — |
| 2014 | 215.00 days | — | — |
| 2013 | 229.00 days | — | — |
| 2012 | 254.00 days | — | — |
| 2011 | 250.00 days | — | — |
| 2010 | 229.00 days | — | — |
| 2009 | 209.00 days | — | — |
| 2008 | 211.00 days | — | — |
| 2007 | 204.00 days | — | — |
| 2006 | 191.00 days | — | — |
| 2005 | 231.00 days | — | — |
| 2004 | 238.00 days | — | — |
| 2003 | 235.00 days | — | — |
| 2002 | 219.00 days | — | — |
| 2001 | 224.00 days | — | — |
| 2000 | 225.00 days | — | — |
| 1999 | 161.00 days | — | — |
| 1998 | 50.00 days | — | — |
| 1997 | 48.00 days | — | — |
| 1996 | 64.00 days | — | — |
| 1995 | 71.00 days | — | — |
| 1994 | 114.00 days | — | — |
| 1993 | 57.00 days | — | — |
| 1992 | 52.00 days | — | — |
| 1991 | 81.00 days | — | — |
| 1990 | 47.00 days | — | — |
| 1989 | 73.00 days | — | — |
| 1988 | 71.00 days | — | — |
| 1987 | 77.00 days | — | — |
| 1986 | 81.00 days | — | — |
| 1985 | 95.00 days | — | — |
| 1984 | 119.00 days | — | — |
| 1983 | 110.00 days | — | — |
| 1982 | 96.00 days | — | — |
| 1981 | 128.00 days | — | — |
| 1980 | 127.00 days | — | — |
Annual indicator
90th percentile daily AQI
65.00 AQI index2026
EPA annual CBSA summary field: 90th Percentile AQI. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | AQI index | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 65.00 AQI index | provisional-current-year | — |
| 2025 | 67.00 AQI index | — | — |
| 2024 | 65.00 AQI index | — | — |
| 2023 | 70.00 AQI index | — | — |
| 2022 | 65.00 AQI index | — | — |
| 2021 | 71.00 AQI index | — | — |
| 2020 | 61.00 AQI index | — | — |
| 2019 | 67.00 AQI index | — | — |
| 2018 | 77.00 AQI index | — | — |
| 2017 | 76.00 AQI index | — | — |
| 2016 | 77.00 AQI index | — | — |
| 2015 | 80.00 AQI index | — | — |
| 2014 | 75.00 AQI index | — | — |
| 2013 | 79.00 AQI index | — | — |
| 2012 | 84.00 AQI index | — | — |
| 2011 | 87.00 AQI index | — | — |
| 2010 | 97.00 AQI index | — | — |
| 2009 | 77.00 AQI index | — | — |
| 2008 | 88.00 AQI index | — | — |
| 2007 | 98.00 AQI index | — | — |
| 2006 | 87.00 AQI index | — | — |
| 2005 | 98.00 AQI index | — | — |
| 2004 | 97.00 AQI index | — | — |
| 2003 | 97.00 AQI index | — | — |
| 2002 | 122.00 AQI index | — | — |
| 2001 | 119.00 AQI index | — | — |
| 2000 | 97.00 AQI index | — | — |
| 1999 | 115.00 AQI index | — | — |
| 1998 | 122.00 AQI index | — | — |
| 1997 | 97.00 AQI index | — | — |
| 1996 | 97.00 AQI index | — | — |
| 1995 | 108.00 AQI index | — | — |
| 1994 | 103.00 AQI index | — | — |
| 1993 | 105.00 AQI index | — | — |
| 1992 | 71.00 AQI index | — | — |
| 1991 | 105.00 AQI index | — | — |
| 1990 | 90.00 AQI index | — | — |
| 1989 | 87.00 AQI index | — | — |
| 1988 | 143.00 AQI index | — | — |
| 1987 | 122.00 AQI index | — | — |
| 1986 | 105.00 AQI index | — | — |
| 1985 | 129.00 AQI index | — | — |
| 1984 | 119.00 AQI index | — | — |
| 1983 | 151.00 AQI index | — | — |
| 1982 | 105.00 AQI index | — | — |
| 1981 | 115.00 AQI index | — | — |
| 1980 | 159.00 AQI index | — | — |
Annual indicator
Unhealthy AQI days
0.00 days2026
EPA annual CBSA summary field: Unhealthy Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 0.00 days | provisional-current-year | — |
| 2025 | 0.00 days | — | — |
| 2024 | 0.00 days | — | — |
| 2023 | 4.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 1.00 days | — | — |
| 2020 | 0.00 days | — | — |
| 2019 | 0.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 0.00 days | — | — |
| 2016 | 0.00 days | — | — |
| 2015 | 0.00 days | — | — |
| 2014 | 0.00 days | — | — |
| 2013 | 0.00 days | — | — |
| 2012 | 1.00 days | — | — |
| 2011 | 3.00 days | — | — |
| 2010 | 2.00 days | — | — |
| 2009 | 0.00 days | — | — |
| 2008 | 1.00 days | — | — |
| 2007 | 2.00 days | — | — |
| 2006 | 3.00 days | — | — |
| 2005 | 6.00 days | — | — |
| 2004 | 6.00 days | — | — |
| 2003 | 2.00 days | — | — |
| 2002 | 17.00 days | — | — |
| 2001 | 12.00 days | — | — |
| 2000 | 4.00 days | — | — |
| 1999 | 17.00 days | — | — |
| 1998 | 14.00 days | — | — |
| 1997 | 12.00 days | — | — |
| 1996 | 6.00 days | — | — |
| 1995 | 13.00 days | — | — |
| 1994 | 5.00 days | — | — |
| 1993 | 5.00 days | — | — |
| 1992 | 2.00 days | — | — |
| 1991 | 11.00 days | — | — |
| 1990 | 9.00 days | — | — |
| 1989 | 9.00 days | — | — |
| 1988 | 17.00 days | — | — |
| 1987 | 16.00 days | — | — |
| 1986 | 13.00 days | — | — |
| 1985 | 17.00 days | — | — |
| 1984 | 12.00 days | — | — |
| 1983 | 24.00 days | — | — |
| 1982 | 14.00 days | — | — |
| 1981 | 16.00 days | — | — |
| 1980 | 36.00 days | — | — |
Annual indicator
Unhealthy for sensitive groups days
0.00 days2026
EPA annual CBSA summary field: Unhealthy for Sensitive Groups Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 0.00 days | provisional-current-year | — |
| 2025 | 3.00 days | — | — |
| 2024 | 4.00 days | — | — |
| 2023 | 2.00 days | — | — |
| 2022 | 2.00 days | — | — |
| 2021 | 3.00 days | — | — |
| 2020 | 1.00 days | — | — |
| 2019 | 4.00 days | — | — |
| 2018 | 5.00 days | — | — |
| 2017 | 1.00 days | — | — |
| 2016 | 10.00 days | — | — |
| 2015 | 6.00 days | — | — |
| 2014 | 3.00 days | — | — |
| 2013 | 10.00 days | — | — |
| 2012 | 16.00 days | — | — |
| 2011 | 11.00 days | — | — |
| 2010 | 25.00 days | — | — |
| 2009 | 3.00 days | — | — |
| 2008 | 18.00 days | — | — |
| 2007 | 30.00 days | — | — |
| 2006 | 15.00 days | — | — |
| 2005 | 27.00 days | — | — |
| 2004 | 24.00 days | — | — |
| 2003 | 26.00 days | — | — |
| 2002 | 27.00 days | — | — |
| 2001 | 37.00 days | — | — |
| 2000 | 27.00 days | — | — |
| 1999 | 24.00 days | — | — |
| 1998 | 36.00 days | — | — |
| 1997 | 22.00 days | — | — |
| 1996 | 30.00 days | — | — |
| 1995 | 24.00 days | — | — |
| 1994 | 36.00 days | — | — |
| 1993 | 34.00 days | — | — |
| 1992 | 19.00 days | — | — |
| 1991 | 26.00 days | — | — |
| 1990 | 21.00 days | — | — |
| 1989 | 21.00 days | — | — |
| 1988 | 29.00 days | — | — |
| 1987 | 27.00 days | — | — |
| 1986 | 25.00 days | — | — |
| 1985 | 36.00 days | — | — |
| 1984 | 34.00 days | — | — |
| 1983 | 28.00 days | — | — |
| 1982 | 27.00 days | — | — |
| 1981 | 29.00 days | — | — |
| 1980 | 34.00 days | — | — |
Annual indicator
Very unhealthy AQI days
0.00 days2026
EPA annual CBSA summary field: Very Unhealthy Days. Current-year values are provisional because reporting is incomplete and can be revised. Values retain the source period and unit.
View source data
| Period | days | Source flag | Confidentiality |
|---|---|---|---|
| 2026 | 0.00 days | provisional-current-year | — |
| 2025 | 0.00 days | — | — |
| 2024 | 0.00 days | — | — |
| 2023 | 0.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 0.00 days | — | — |
| 2020 | 0.00 days | — | — |
| 2019 | 0.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 0.00 days | — | — |
| 2016 | 1.00 days | — | — |
| 2015 | 0.00 days | — | — |
| 2014 | 0.00 days | — | — |
| 2013 | 0.00 days | — | — |
| 2012 | 0.00 days | — | — |
| 2011 | 0.00 days | — | — |
| 2010 | 0.00 days | — | — |
| 2009 | 0.00 days | — | — |
| 2008 | 0.00 days | — | — |
| 2007 | 0.00 days | — | — |
| 2006 | 0.00 days | — | — |
| 2005 | 0.00 days | — | — |
| 2004 | 0.00 days | — | — |
| 2003 | 2.00 days | — | — |
| 2002 | 2.00 days | — | — |
| 2001 | 1.00 days | — | — |
| 2000 | 2.00 days | — | — |
| 1999 | 4.00 days | — | — |
| 1998 | 0.00 days | — | — |
| 1997 | 1.00 days | — | — |
| 1996 | 0.00 days | — | — |
| 1995 | 3.00 days | — | — |
| 1994 | 1.00 days | — | — |
| 1993 | 0.00 days | — | — |
| 1992 | 0.00 days | — | — |
| 1991 | 3.00 days | — | — |
| 1990 | 0.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 16.00 days | — | — |
| 1987 | 5.00 days | — | — |
| 1986 | 0.00 days | — | — |
| 1985 | 1.00 days | — | — |
| 1984 | 5.00 days | — | — |
| 1983 | 13.00 days | — | — |
| 1982 | 2.00 days | — | — |
| 1981 | 2.00 days | — | — |
| 1980 | 9.00 days | — | — |
Field-level provenance
Sources for this profile
Dates and licenses apply to the specific facts and series supplied by each source.
U.S. EPA AirData
- Applicable date
- 2026-03-31
- Dataset version
- 10350f77cf0f
- License
- U.S. federal factual data; verify third-party fields
- Attribution
- U.S. Environmental Protection Agency
U.S. EPA AirData
- Applicable date
- 2026-07-30
- Dataset version
- annual-aqi-by-cbsa-v1
- License
- U.S. federal factual data; verify third-party fields
- Attribution
- U.S. Environmental Protection Agency
DataOfWorld deterministic air-quality profile template
- Applicable date
- 2026-03-31
- Dataset version
- air-quality-profile-v1
- License
- Original DataOfWorld text
- Attribution
- DataOfWorld
Reference data can change. Verify consequential decisions against the original source.