Worst air pollution Willits, today and tomorrow
Today (9 August): Air quality in Willits is poor. AQI and NO2 are poor; PM10, O3, and PM1 are fair; PM2.5 and SO2 are medium; CO and HCHO are good. Pollution peaks around 1:00 AM (NO2: 77.6/100).
Tomorrow (10 August 2026): Air quality in Willits is fair. AQI improves to medium; PM10 decreases to good; NO2 decreases to medium; SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 57.1/100). 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 Willits, regional wildfire smoke is the main influence on air quality, and dry-season wildfire smoke is the main air quality risk. None of these influences are extreme on their own, but together they shape the local pattern in Willits. None of this replaces checking the current forecast before heading outdoors in Willits.
Today - 9 August | Pollution peaks at 01:00
AQI:
Poor
77.6/100
PM2.5 (fine particles):
Medium
43.3/100
PM10 (coarse particles):
Fair
21.3/100
NO2 (nitrogen dioxide):
Poor
77.6/100
O3 (ozone):
Fair
35.7/100
SO2 (sulfur dioxide):
Medium
40.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Fair
36.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 21:00
AQI:
Medium
57.1/100
PM2.5 (fine particles):
Medium
41.2/100
PM10 (coarse particles):
Good
19.0/100
NO2 (nitrogen dioxide):
Medium
57.1/100
O3 (ozone):
Fair
34.8/100
SO2 (sulfur dioxide):
Fair
35.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Fair
33.3/100
Pollen forecast in Willits
View pollen forecastFrequently Asked Questions
Is air quality bad in Willits right now?
On 9 August 2026, overall air quality in Willits is poor. AQI is the main air quality indicator at 77.6/100. Pollution peaks around 1:00 AM (NO2: 77.6/100).
Will air quality be worse tomorrow in Willits?
On 10 August 2026, air quality conditions in Willits will be better than today, with SO2 forecast at fair at 35.8/100. Pollution peaks around 9:00 PM (NO2: 57.1/100).
When is air pollution at its worst in Willits?
Seasonal changes shape air quality across Willits: winter typically brings the cleanest stretch, once occasional rain clears the basin, but hot, sunny summer conditions drive persistent ozone problems, compounded by wildfire smoke risk into early autumn. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Willits 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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