Air quality reference
Crescent City, CA
Crescent City, CA has a published AQI value of 22, categorized as Good, for 2026-03-31T00:00:00+00:00. The defining parameter is PM2.5, 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
- Crescent City, CA
- Air quality index
- 22
- Category
- Good
- Defining parameter
- PM2.5
- 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
89.00 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 | 89.00 days | provisional-current-year | — |
| 2025 | 352.00 days | — | — |
| 2024 | 289.00 days | — | — |
| 2023 | 328.00 days | — | — |
| 2022 | 344.00 days | — | — |
| 2021 | 323.00 days | — | — |
| 2020 | 292.00 days | — | — |
| 2019 | 248.00 days | — | — |
| 2018 | 180.00 days | — | — |
| 2017 | 298.00 days | — | — |
| 2016 | 177.00 days | — | — |
| 2015 | 114.00 days | — | — |
| 2014 | 115.00 days | — | — |
| 2013 | 126.00 days | — | — |
| 2012 | 119.00 days | — | — |
| 2011 | 120.00 days | — | — |
| 2010 | 110.00 days | — | — |
| 2009 | 125.00 days | — | — |
| 2008 | 118.00 days | — | — |
| 2007 | 115.00 days | — | — |
| 2006 | 124.00 days | — | — |
| 2005 | 131.00 days | — | — |
| 2004 | 159.00 days | — | — |
| 2003 | 148.00 days | — | — |
| 2002 | 120.00 days | — | — |
| 2001 | 125.00 days | — | — |
| 2000 | 134.00 days | — | — |
| 1999 | 141.00 days | — | — |
| 1998 | 144.00 days | — | — |
| 1997 | 135.00 days | — | — |
| 1996 | 127.00 days | — | — |
| 1995 | 281.00 days | — | — |
| 1994 | 365.00 days | — | — |
| 1993 | 360.00 days | — | — |
| 1992 | 360.00 days | — | — |
| 1991 | 354.00 days | — | — |
| 1990 | 340.00 days | — | — |
| 1989 | 329.00 days | — | — |
| 1988 | 344.00 days | — | — |
| 1987 | 72.00 days | — | — |
Annual indicator
Good AQI days
69.00 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 | 69.00 days | provisional-current-year | — |
| 2025 | 288.00 days | — | — |
| 2024 | 232.00 days | — | — |
| 2023 | 268.00 days | — | — |
| 2022 | 299.00 days | — | — |
| 2021 | 259.00 days | — | — |
| 2020 | 193.00 days | — | — |
| 2019 | 210.00 days | — | — |
| 2018 | 134.00 days | — | — |
| 2017 | 241.00 days | — | — |
| 2016 | 156.00 days | — | — |
| 2015 | 101.00 days | — | — |
| 2014 | 108.00 days | — | — |
| 2013 | 121.00 days | — | — |
| 2012 | 117.00 days | — | — |
| 2011 | 117.00 days | — | — |
| 2010 | 109.00 days | — | — |
| 2009 | 121.00 days | — | — |
| 2008 | 111.00 days | — | — |
| 2007 | 113.00 days | — | — |
| 2006 | 116.00 days | — | — |
| 2005 | 129.00 days | — | — |
| 2004 | 155.00 days | — | — |
| 2003 | 147.00 days | — | — |
| 2002 | 115.00 days | — | — |
| 2001 | 121.00 days | — | — |
| 2000 | 131.00 days | — | — |
| 1999 | 130.00 days | — | — |
| 1998 | 141.00 days | — | — |
| 1997 | 123.00 days | — | — |
| 1996 | 121.00 days | — | — |
| 1995 | 273.00 days | — | — |
| 1994 | 361.00 days | — | — |
| 1993 | 351.00 days | — | — |
| 1992 | 344.00 days | — | — |
| 1991 | 341.00 days | — | — |
| 1990 | 330.00 days | — | — |
| 1989 | 320.00 days | — | — |
| 1988 | 334.00 days | — | — |
| 1987 | 68.00 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 | 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 | 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 | — | — |
Annual indicator
Maximum daily AQI
78.00 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 | 78.00 AQI index | provisional-current-year | — |
| 2025 | 70.00 AQI index | — | — |
| 2024 | 125.00 AQI index | — | — |
| 2023 | 187.00 AQI index | — | — |
| 2022 | 74.00 AQI index | — | — |
| 2021 | 72.00 AQI index | — | — |
| 2020 | 245.00 AQI index | — | — |
| 2019 | 74.00 AQI index | — | — |
| 2018 | 80.00 AQI index | — | — |
| 2017 | 251.00 AQI index | — | — |
| 2016 | 69.00 AQI index | — | — |
| 2015 | 72.00 AQI index | — | — |
| 2014 | 60.00 AQI index | — | — |
| 2013 | 75.00 AQI index | — | — |
| 2012 | 54.00 AQI index | — | — |
| 2011 | 54.00 AQI index | — | — |
| 2010 | 57.00 AQI index | — | — |
| 2009 | 86.00 AQI index | — | — |
| 2008 | 72.00 AQI index | — | — |
| 2007 | 56.00 AQI index | — | — |
| 2006 | 79.00 AQI index | — | — |
| 2005 | 53.00 AQI index | — | — |
| 2004 | 53.00 AQI index | — | — |
| 2003 | 53.00 AQI index | — | — |
| 2002 | 57.00 AQI index | — | — |
| 2001 | 56.00 AQI index | — | — |
| 2000 | 59.00 AQI index | — | — |
| 1999 | 167.00 AQI index | — | — |
| 1998 | 58.00 AQI index | — | — |
| 1997 | 74.00 AQI index | — | — |
| 1996 | 61.00 AQI index | — | — |
| 1995 | 63.00 AQI index | — | — |
| 1994 | 71.00 AQI index | — | — |
| 1993 | 66.00 AQI index | — | — |
| 1992 | 102.00 AQI index | — | — |
| 1991 | 71.00 AQI index | — | — |
| 1990 | 67.00 AQI index | — | — |
| 1989 | 66.00 AQI index | — | — |
| 1988 | 67.00 AQI index | — | — |
| 1987 | 56.00 AQI index | — | — |
Annual indicator
Median daily AQI
35.00 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 | 35.00 AQI index | provisional-current-year | — |
| 2025 | 32.00 AQI index | — | — |
| 2024 | 32.00 AQI index | — | — |
| 2023 | 32.00 AQI index | — | — |
| 2022 | 29.00 AQI index | — | — |
| 2021 | 31.00 AQI index | — | — |
| 2020 | 42.00 AQI index | — | — |
| 2019 | 26.00 AQI index | — | — |
| 2018 | 33.00 AQI index | — | — |
| 2017 | 27.00 AQI index | — | — |
| 2016 | 26.00 AQI index | — | — |
| 2015 | 20.00 AQI index | — | — |
| 2014 | 16.00 AQI index | — | — |
| 2013 | 16.00 AQI index | — | — |
| 2012 | 12.00 AQI index | — | — |
| 2011 | 17.00 AQI index | — | — |
| 2010 | 14.00 AQI index | — | — |
| 2009 | 14.00 AQI index | — | — |
| 2008 | 17.00 AQI index | — | — |
| 2007 | 16.00 AQI index | — | — |
| 2006 | 16.00 AQI index | — | — |
| 2005 | 16.00 AQI index | — | — |
| 2004 | 15.00 AQI index | — | — |
| 2003 | 14.00 AQI index | — | — |
| 2002 | 20.00 AQI index | — | — |
| 2001 | 17.00 AQI index | — | — |
| 2000 | 18.00 AQI index | — | — |
| 1999 | 17.00 AQI index | — | — |
| 1998 | 16.00 AQI index | — | — |
| 1997 | 20.00 AQI index | — | — |
| 1996 | 18.00 AQI index | — | — |
| 1995 | 31.00 AQI index | — | — |
| 1994 | 31.00 AQI index | — | — |
| 1993 | 29.00 AQI index | — | — |
| 1992 | 31.00 AQI index | — | — |
| 1991 | 28.00 AQI index | — | — |
| 1990 | 30.00 AQI index | — | — |
| 1989 | 26.00 AQI index | — | — |
| 1988 | 28.00 AQI index | — | — |
| 1987 | 27.00 AQI index | — | — |
Annual indicator
Moderate AQI days
20.00 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 | 20.00 days | provisional-current-year | — |
| 2025 | 64.00 days | — | — |
| 2024 | 55.00 days | — | — |
| 2023 | 52.00 days | — | — |
| 2022 | 45.00 days | — | — |
| 2021 | 64.00 days | — | — |
| 2020 | 90.00 days | — | — |
| 2019 | 38.00 days | — | — |
| 2018 | 46.00 days | — | — |
| 2017 | 55.00 days | — | — |
| 2016 | 21.00 days | — | — |
| 2015 | 13.00 days | — | — |
| 2014 | 7.00 days | — | — |
| 2013 | 5.00 days | — | — |
| 2012 | 2.00 days | — | — |
| 2011 | 3.00 days | — | — |
| 2010 | 1.00 days | — | — |
| 2009 | 4.00 days | — | — |
| 2008 | 7.00 days | — | — |
| 2007 | 2.00 days | — | — |
| 2006 | 8.00 days | — | — |
| 2005 | 2.00 days | — | — |
| 2004 | 4.00 days | — | — |
| 2003 | 1.00 days | — | — |
| 2002 | 5.00 days | — | — |
| 2001 | 4.00 days | — | — |
| 2000 | 3.00 days | — | — |
| 1999 | 10.00 days | — | — |
| 1998 | 3.00 days | — | — |
| 1997 | 12.00 days | — | — |
| 1996 | 6.00 days | — | — |
| 1995 | 8.00 days | — | — |
| 1994 | 4.00 days | — | — |
| 1993 | 9.00 days | — | — |
| 1992 | 15.00 days | — | — |
| 1991 | 13.00 days | — | — |
| 1990 | 10.00 days | — | — |
| 1989 | 9.00 days | — | — |
| 1988 | 10.00 days | — | — |
| 1987 | 4.00 days | — | — |
Annual indicator
90th percentile daily AQI
56.00 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 | 56.00 AQI index | provisional-current-year | — |
| 2025 | 54.00 AQI index | — | — |
| 2024 | 54.00 AQI index | — | — |
| 2023 | 55.00 AQI index | — | — |
| 2022 | 52.00 AQI index | — | — |
| 2021 | 54.00 AQI index | — | — |
| 2020 | 61.00 AQI index | — | — |
| 2019 | 53.00 AQI index | — | — |
| 2018 | 58.00 AQI index | — | — |
| 2017 | 56.00 AQI index | — | — |
| 2016 | 52.00 AQI index | — | — |
| 2015 | 51.00 AQI index | — | — |
| 2014 | 43.00 AQI index | — | — |
| 2013 | 27.00 AQI index | — | — |
| 2012 | 31.00 AQI index | — | — |
| 2011 | 38.00 AQI index | — | — |
| 2010 | 30.00 AQI index | — | — |
| 2009 | 34.00 AQI index | — | — |
| 2008 | 40.00 AQI index | — | — |
| 2007 | 36.00 AQI index | — | — |
| 2006 | 42.00 AQI index | — | — |
| 2005 | 30.00 AQI index | — | — |
| 2004 | 36.00 AQI index | — | — |
| 2003 | 28.00 AQI index | — | — |
| 2002 | 41.00 AQI index | — | — |
| 2001 | 41.00 AQI index | — | — |
| 2000 | 38.00 AQI index | — | — |
| 1999 | 41.00 AQI index | — | — |
| 1998 | 32.00 AQI index | — | — |
| 1997 | 47.00 AQI index | — | — |
| 1996 | 42.00 AQI index | — | — |
| 1995 | 40.00 AQI index | — | — |
| 1994 | 42.00 AQI index | — | — |
| 1993 | 38.00 AQI index | — | — |
| 1992 | 44.00 AQI index | — | — |
| 1991 | 42.00 AQI index | — | — |
| 1990 | 43.00 AQI index | — | — |
| 1989 | 37.00 AQI index | — | — |
| 1988 | 40.00 AQI index | — | — |
| 1987 | 35.00 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 | 2.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 0.00 days | — | — |
| 2020 | 3.00 days | — | — |
| 2019 | 0.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 1.00 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 | 1.00 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 | — | — |
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 | 0.00 days | — | — |
| 2024 | 2.00 days | — | — |
| 2023 | 6.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 0.00 days | — | — |
| 2020 | 4.00 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 | 1.00 days | — | — |
| 1991 | 0.00 days | — | — |
| 1990 | 0.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 0.00 days | — | — |
| 1987 | 0.00 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 | 2.00 days | — | — |
| 2019 | 0.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 1.00 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 | — | — |
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.