Worst air pollution Homer, today and tomorrow
Today (9 August): Air quality in Homer is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 22.2/100).
Tomorrow (10 August 2026): Air quality in Homer is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (PM2.5: 19.0/100). 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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In Homer, cool maritime air is the main influence on air quality, and clean coastal air with excellent visibility most of the year. These factors combine to give Homer a fairly typical seasonal air quality pattern for this part of the country. Checking current readings is still the best way to plan outdoor activity around Homer.
Today - 9 August | Pollution peaks at 10:00
AQI:
Fair
22.2/100
PM2.5 (fine particles):
Good
15.6/100
PM10 (coarse particles):
Good
6.9/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Fair
22.2/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
5.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 15:00
AQI:
Good
19.0/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
8.3/100
NO2 (nitrogen dioxide):
Good
1.4/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
4.8/100
Frequently Asked Questions
Is air quality bad in Homer right now?
On 9 August 2026, overall air quality in Homer is fair. AQI is the main air quality indicator at 22.2/100. Pollution peaks around 10:00 AM (O3: 22.2/100).
Will air quality be worse tomorrow in Homer?
On 10 August 2026, air quality conditions in Homer will be better than today, with AQI forecast at good at 19.0/100. Pollution peaks around 3:00 PM (PM2.5: 19.0/100).
When is air pollution at its worst in Homer?
Homer sees air quality change through the year, as the short window of late spring typically offers the year's cleanest air; by contrast, summer wildfire smoke is the dominant concern, sometimes persisting for weeks at a stretch across the interior. Coastal communities generally see milder swings than the more extreme interior valleys.
Are air quality levels in Homer 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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