Worst air pollution Juneau, today and tomorrow
Today (9 August): Air quality in Juneau is fair. PM10 and SO2 are fair; AQI, PM2.5, and NO2 are medium; O3, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 50.2/100).
Tomorrow (10 August 2026): Air quality in Juneau is fair. NO2 decreases to good; SO2 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 PM (PM2.5: 45.4/100). 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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Juneau experiences air quality conditions shaped chiefly by cool, wet maritime air, and frequent rain keeps air quality consistently excellent. These factors combine to give Juneau a fairly typical seasonal air quality pattern for this part of the country. None of this replaces checking the current forecast before heading outdoors in Juneau.
Today - 9 August | Pollution peaks at 00:00
AQI:
Medium
50.2/100
PM2.5 (fine particles):
Medium
43.6/100
PM10 (coarse particles):
Fair
25.8/100
NO2 (nitrogen dioxide):
Medium
50.2/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Fair
24.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
15.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Medium
45.4/100
PM2.5 (fine particles):
Medium
45.4/100
PM10 (coarse particles):
Fair
27.6/100
NO2 (nitrogen dioxide):
Good
18.6/100
O3 (ozone):
Good
19.8/100
SO2 (sulfur dioxide):
Good
7.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
18.6/100
Frequently Asked Questions
Is air quality bad in Juneau right now?
On 9 August 2026, overall air quality in Juneau is fair. PM10 is the main pollutant at 25.8/100. Pollution peaks around 12:00 AM (NO2: 50.2/100).
Will air quality be worse tomorrow in Juneau?
On 10 August 2026, air quality conditions in Juneau will be similar to today, with PM10 forecast at fair at 27.6/100. Pollution peaks around 2:00 PM (PM2.5: 45.4/100).
When is air pollution at its worst in Juneau?
Air quality in Juneau shifts across the year — between the end of winter inversions and the start of fire season, late spring is cleanest, whereas winter temperature inversions can trap wood-smoke and vehicle pollution in place for days at a time, especially in interior valleys. Coastal communities generally see milder swings than the more extreme interior valleys.
Are air quality levels in Juneau 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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