Air quality reference
Juneau, AK
Juneau, AK has a published AQI value of 27, 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
- Juneau, AK
- Air quality index
- 27
- 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
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 | 363.00 days | — | — |
| 2024 | 356.00 days | — | — |
| 2023 | 364.00 days | — | — |
| 2022 | 342.00 days | — | — |
| 2021 | 357.00 days | — | — |
| 2020 | 361.00 days | — | — |
| 2019 | 362.00 days | — | — |
| 2018 | 352.00 days | — | — |
| 2017 | 356.00 days | — | — |
| 2016 | 305.00 days | — | — |
| 2015 | 351.00 days | — | — |
| 2014 | 351.00 days | — | — |
| 2013 | 345.00 days | — | — |
| 2012 | 362.00 days | — | — |
| 2011 | 353.00 days | — | — |
| 2010 | 359.00 days | — | — |
| 2009 | 303.00 days | — | — |
| 2008 | 278.00 days | — | — |
| 2007 | 135.00 days | — | — |
| 2006 | 108.00 days | — | — |
| 2005 | 115.00 days | — | — |
| 2004 | 122.00 days | — | — |
| 2003 | 82.00 days | — | — |
| 2002 | 122.00 days | — | — |
| 2001 | 130.00 days | — | — |
| 2000 | 126.00 days | — | — |
| 1999 | 120.00 days | — | — |
| 1998 | 75.00 days | — | — |
| 1997 | 243.00 days | — | — |
| 1996 | 361.00 days | — | — |
| 1995 | 363.00 days | — | — |
| 1994 | 364.00 days | — | — |
| 1993 | 360.00 days | — | — |
| 1992 | 363.00 days | — | — |
| 1991 | 360.00 days | — | — |
| 1990 | 361.00 days | — | — |
| 1989 | 362.00 days | — | — |
| 1988 | 354.00 days | — | — |
| 1987 | 359.00 days | — | — |
| 1986 | 278.00 days | — | — |
Annual indicator
Good AQI days
76.00 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 | 76.00 days | provisional-current-year | — |
| 2025 | 306.00 days | — | — |
| 2024 | 304.00 days | — | — |
| 2023 | 314.00 days | — | — |
| 2022 | 291.00 days | — | — |
| 2021 | 315.00 days | — | — |
| 2020 | 320.00 days | — | — |
| 2019 | 280.00 days | — | — |
| 2018 | 268.00 days | — | — |
| 2017 | 281.00 days | — | — |
| 2016 | 224.00 days | — | — |
| 2015 | 262.00 days | — | — |
| 2014 | 251.00 days | — | — |
| 2013 | 280.00 days | — | — |
| 2012 | 277.00 days | — | — |
| 2011 | 253.00 days | — | — |
| 2010 | 231.00 days | — | — |
| 2009 | 229.00 days | — | — |
| 2008 | 218.00 days | — | — |
| 2007 | 106.00 days | — | — |
| 2006 | 81.00 days | — | — |
| 2005 | 88.00 days | — | — |
| 2004 | 95.00 days | — | — |
| 2003 | 69.00 days | — | — |
| 2002 | 104.00 days | — | — |
| 2001 | 107.00 days | — | — |
| 2000 | 94.00 days | — | — |
| 1999 | 115.00 days | — | — |
| 1998 | 75.00 days | — | — |
| 1997 | 240.00 days | — | — |
| 1996 | 331.00 days | — | — |
| 1995 | 345.00 days | — | — |
| 1994 | 346.00 days | — | — |
| 1993 | 306.00 days | — | — |
| 1992 | 323.00 days | — | — |
| 1991 | 289.00 days | — | — |
| 1990 | 302.00 days | — | — |
| 1989 | 308.00 days | — | — |
| 1988 | 334.00 days | — | — |
| 1987 | 342.00 days | — | — |
| 1986 | 258.00 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 | 2.00 days | — | — |
| 1991 | 2.00 days | — | — |
| 1990 | 0.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 0.00 days | — | — |
| 1987 | 0.00 days | — | — |
| 1986 | 0.00 days | — | — |
Annual indicator
Maximum daily AQI
80.00 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 | 80.00 AQI index | provisional-current-year | — |
| 2025 | 138.00 AQI index | — | — |
| 2024 | 84.00 AQI index | — | — |
| 2023 | 78.00 AQI index | — | — |
| 2022 | 95.00 AQI index | — | — |
| 2021 | 89.00 AQI index | — | — |
| 2020 | 101.00 AQI index | — | — |
| 2019 | 145.00 AQI index | — | — |
| 2018 | 85.00 AQI index | — | — |
| 2017 | 103.00 AQI index | — | — |
| 2016 | 90.00 AQI index | — | — |
| 2015 | 92.00 AQI index | — | — |
| 2014 | 124.00 AQI index | — | — |
| 2013 | 107.00 AQI index | — | — |
| 2012 | 117.00 AQI index | — | — |
| 2011 | 89.00 AQI index | — | — |
| 2010 | 112.00 AQI index | — | — |
| 2009 | 106.00 AQI index | — | — |
| 2008 | 114.00 AQI index | — | — |
| 2007 | 127.00 AQI index | — | — |
| 2006 | 133.00 AQI index | — | — |
| 2005 | 125.00 AQI index | — | — |
| 2004 | 90.00 AQI index | — | — |
| 2003 | 88.00 AQI index | — | — |
| 2002 | 94.00 AQI index | — | — |
| 2001 | 96.00 AQI index | — | — |
| 2000 | 107.00 AQI index | — | — |
| 1999 | 85.00 AQI index | — | — |
| 1998 | 44.00 AQI index | — | — |
| 1997 | 70.00 AQI index | — | — |
| 1996 | 66.00 AQI index | — | — |
| 1995 | 69.00 AQI index | — | — |
| 1994 | 72.00 AQI index | — | — |
| 1993 | 180.00 AQI index | — | — |
| 1992 | 480.00 AQI index | — | — |
| 1991 | 882.00 AQI index | — | — |
| 1990 | 152.00 AQI index | — | — |
| 1989 | 81.00 AQI index | — | — |
| 1988 | 104.00 AQI index | — | — |
| 1987 | 73.00 AQI index | — | — |
| 1986 | 143.00 AQI index | — | — |
Annual indicator
Median daily AQI
23.00 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 | 23.00 AQI index | provisional-current-year | — |
| 2025 | 23.00 AQI index | — | — |
| 2024 | 24.00 AQI index | — | — |
| 2023 | 24.00 AQI index | — | — |
| 2022 | 21.00 AQI index | — | — |
| 2021 | 20.00 AQI index | — | — |
| 2020 | 19.00 AQI index | — | — |
| 2019 | 27.00 AQI index | — | — |
| 2018 | 31.00 AQI index | — | — |
| 2017 | 20.00 AQI index | — | — |
| 2016 | 27.00 AQI index | — | — |
| 2015 | 28.00 AQI index | — | — |
| 2014 | 31.00 AQI index | — | — |
| 2013 | 25.00 AQI index | — | — |
| 2012 | 28.00 AQI index | — | — |
| 2011 | 31.00 AQI index | — | — |
| 2010 | 35.00 AQI index | — | — |
| 2009 | 29.00 AQI index | — | — |
| 2008 | 23.00 AQI index | — | — |
| 2007 | 22.00 AQI index | — | — |
| 2006 | 29.00 AQI index | — | — |
| 2005 | 26.00 AQI index | — | — |
| 2004 | 29.00 AQI index | — | — |
| 2003 | 26.00 AQI index | — | — |
| 2002 | 26.00 AQI index | — | — |
| 2001 | 23.00 AQI index | — | — |
| 2000 | 24.00 AQI index | — | — |
| 1999 | 11.00 AQI index | — | — |
| 1998 | 9.00 AQI index | — | — |
| 1997 | 9.00 AQI index | — | — |
| 1996 | 12.00 AQI index | — | — |
| 1995 | 13.00 AQI index | — | — |
| 1994 | 14.00 AQI index | — | — |
| 1993 | 17.00 AQI index | — | — |
| 1992 | 14.00 AQI index | — | — |
| 1991 | 19.00 AQI index | — | — |
| 1990 | 21.00 AQI index | — | — |
| 1989 | 22.00 AQI index | — | — |
| 1988 | 13.00 AQI index | — | — |
| 1987 | 13.00 AQI index | — | — |
| 1986 | 18.00 AQI index | — | — |
Annual indicator
Moderate AQI days
14.00 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 | 14.00 days | provisional-current-year | — |
| 2025 | 56.00 days | — | — |
| 2024 | 52.00 days | — | — |
| 2023 | 50.00 days | — | — |
| 2022 | 51.00 days | — | — |
| 2021 | 42.00 days | — | — |
| 2020 | 40.00 days | — | — |
| 2019 | 79.00 days | — | — |
| 2018 | 84.00 days | — | — |
| 2017 | 74.00 days | — | — |
| 2016 | 81.00 days | — | — |
| 2015 | 89.00 days | — | — |
| 2014 | 99.00 days | — | — |
| 2013 | 63.00 days | — | — |
| 2012 | 84.00 days | — | — |
| 2011 | 100.00 days | — | — |
| 2010 | 127.00 days | — | — |
| 2009 | 72.00 days | — | — |
| 2008 | 58.00 days | — | — |
| 2007 | 26.00 days | — | — |
| 2006 | 25.00 days | — | — |
| 2005 | 25.00 days | — | — |
| 2004 | 27.00 days | — | — |
| 2003 | 13.00 days | — | — |
| 2002 | 18.00 days | — | — |
| 2001 | 23.00 days | — | — |
| 2000 | 31.00 days | — | — |
| 1999 | 5.00 days | — | — |
| 1998 | 0.00 days | — | — |
| 1997 | 3.00 days | — | — |
| 1996 | 30.00 days | — | — |
| 1995 | 18.00 days | — | — |
| 1994 | 18.00 days | — | — |
| 1993 | 51.00 days | — | — |
| 1992 | 35.00 days | — | — |
| 1991 | 54.00 days | — | — |
| 1990 | 48.00 days | — | — |
| 1989 | 54.00 days | — | — |
| 1988 | 19.00 days | — | — |
| 1987 | 17.00 days | — | — |
| 1986 | 18.00 days | — | — |
Annual indicator
90th percentile daily AQI
52.00 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 | 52.00 AQI index | provisional-current-year | — |
| 2025 | 58.00 AQI index | — | — |
| 2024 | 55.00 AQI index | — | — |
| 2023 | 54.00 AQI index | — | — |
| 2022 | 56.00 AQI index | — | — |
| 2021 | 53.00 AQI index | — | — |
| 2020 | 52.00 AQI index | — | — |
| 2019 | 60.00 AQI index | — | — |
| 2018 | 59.00 AQI index | — | — |
| 2017 | 59.00 AQI index | — | — |
| 2016 | 63.00 AQI index | — | — |
| 2015 | 61.00 AQI index | — | — |
| 2014 | 65.00 AQI index | — | — |
| 2013 | 58.00 AQI index | — | — |
| 2012 | 57.00 AQI index | — | — |
| 2011 | 62.00 AQI index | — | — |
| 2010 | 70.00 AQI index | — | — |
| 2009 | 63.00 AQI index | — | — |
| 2008 | 63.00 AQI index | — | — |
| 2007 | 60.00 AQI index | — | — |
| 2006 | 71.00 AQI index | — | — |
| 2005 | 62.00 AQI index | — | — |
| 2004 | 57.00 AQI index | — | — |
| 2003 | 58.00 AQI index | — | — |
| 2002 | 59.00 AQI index | — | — |
| 2001 | 57.00 AQI index | — | — |
| 2000 | 64.00 AQI index | — | — |
| 1999 | 39.00 AQI index | — | — |
| 1998 | 24.00 AQI index | — | — |
| 1997 | 26.00 AQI index | — | — |
| 1996 | 47.00 AQI index | — | — |
| 1995 | 37.00 AQI index | — | — |
| 1994 | 39.00 AQI index | — | — |
| 1993 | 57.00 AQI index | — | — |
| 1992 | 52.00 AQI index | — | — |
| 1991 | 70.00 AQI index | — | — |
| 1990 | 63.00 AQI index | — | — |
| 1989 | 55.00 AQI index | — | — |
| 1988 | 42.00 AQI index | — | — |
| 1987 | 39.00 AQI index | — | — |
| 1986 | 45.00 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 | 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 | 1.00 days | — | — |
| 1992 | 0.00 days | — | — |
| 1991 | 2.00 days | — | — |
| 1990 | 1.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 0.00 days | — | — |
| 1987 | 0.00 days | — | — |
| 1986 | 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 | 1.00 days | — | — |
| 2024 | 0.00 days | — | — |
| 2023 | 0.00 days | — | — |
| 2022 | 0.00 days | — | — |
| 2021 | 0.00 days | — | — |
| 2020 | 1.00 days | — | — |
| 2019 | 3.00 days | — | — |
| 2018 | 0.00 days | — | — |
| 2017 | 1.00 days | — | — |
| 2016 | 0.00 days | — | — |
| 2015 | 0.00 days | — | — |
| 2014 | 1.00 days | — | — |
| 2013 | 2.00 days | — | — |
| 2012 | 1.00 days | — | — |
| 2011 | 0.00 days | — | — |
| 2010 | 1.00 days | — | — |
| 2009 | 2.00 days | — | — |
| 2008 | 2.00 days | — | — |
| 2007 | 3.00 days | — | — |
| 2006 | 2.00 days | — | — |
| 2005 | 2.00 days | — | — |
| 2004 | 0.00 days | — | — |
| 2003 | 0.00 days | — | — |
| 2002 | 0.00 days | — | — |
| 2001 | 0.00 days | — | — |
| 2000 | 1.00 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 | 2.00 days | — | — |
| 1992 | 3.00 days | — | — |
| 1991 | 13.00 days | — | — |
| 1990 | 10.00 days | — | — |
| 1989 | 0.00 days | — | — |
| 1988 | 1.00 days | — | — |
| 1987 | 0.00 days | — | — |
| 1986 | 2.00 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 | 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 | — | — |
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.