Worst air pollution Anchorage, today and tomorrow
Today (9 August): Air quality in Anchorage is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 21.4/100).
Tomorrow (10 August 2026): Air quality in Anchorage is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 17.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Anchorage's air quality reflects the Cook Inlet coastal basin's partial topographic enclosure between the Chugach Mountains to the east and the Alaska Range to the north, with vehicle emissions from Glenn Highway and the surrounding road network contributing localised PM2.5 and NOₓ. Wood-burning stoves during Anchorage's cold winters contribute seasonal PM2.5, while the Cook Inlet's tidal patterns and Gulf of Alaska maritime air generally provide reasonable ventilation on most days throughout the year.
Today - 9 August | Pollution peaks at 09:00
AQI:
Fair
21.4/100
PM2.5 (fine particles):
Good
7.1/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
21.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
2.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Good
17.6/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
17.6/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.2/100
PM1 (ultrafine particles):
Good
2.0/100
Air quality forecasts for neighbourhoods and landmarks in Anchorage
Frequently Asked Questions
Is air quality bad in Anchorage right now?
On 9 August 2026, overall air quality in Anchorage is fair. AQI is the main air quality indicator at 21.4/100. Pollution peaks around 9:00 AM (O3: 21.4/100).
Will air quality be worse tomorrow in Anchorage?
On 10 August 2026, air quality conditions in Anchorage will be better than today, with AQI forecast at good at 17.6/100. Pollution peaks around 9:00 AM (O3: 17.6/100).
When is air pollution at its worst in Anchorage?
Anchorage sees air quality change through the year: the cleanest stretch usually comes in late spring, between winter inversion season and summer wildfire smoke, but summer wildfire smoke is the dominant concern, sometimes persisting for weeks at a stretch across the interior. Interior valley communities see far more of both winter inversions and summer smoke than coastal areas do.
Are air quality levels in Anchorage based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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