Worst air pollution Corvallis, today and tomorrow
Today (9 August): Air quality in Corvallis is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 40.9/100).
Tomorrow (10 August 2026): Air quality in Corvallis is fair. AQI worsens to fair; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 34.0/100). Airmine updates local air quality forecasts four times daily.
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Corvallis' air quality reflects the Willamette Valley's partial topographic enclosure between the Coast Range and the Cascades, with vehicle emissions from US-20 and Oregon State University campus contributing local sources. Winter wood-burning stoves generate localised PM2.5 under occasional temperature inversions, while summer wildfire smoke from Oregon and Washington forests is an increasingly severe and frequent seasonal concern and the valley position creates modest inversion risk during autumn and winter.
Today - 9 August | Pollution peaks at 06:00
AQI:
Medium
40.9/100
PM2.5 (fine particles):
Good
12.6/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Good
12.2/100
O3 (ozone):
Medium
40.9/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
8.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
20.6/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.2/100
PM1 (ultrafine particles):
Good
6.4/100
Pollen forecast in Corvallis
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Corvallis
Frequently Asked Questions
Is air quality bad in Corvallis right now?
On 9 August 2026, overall air quality in Corvallis is medium. AQI is the main air quality indicator at 40.9/100. Pollution peaks around 6:00 AM (O3: 40.9/100).
Will air quality be worse tomorrow in Corvallis?
On 10 August 2026, air quality conditions in Corvallis will be worse than today, with AQI forecast at fair at 34.0/100. Pollution peaks around 8:00 AM (O3: 34.0/100).
When is air pollution at its worst in Corvallis?
Corvallis sees air quality change through the year, as the wet winter and spring months are generally the cleanest, with regular rain limiting particulate buildup; by contrast, the driest weeks of late summer bring the greatest risk of smoke drifting in from regional wildfires. Coastal areas see relatively little of the smoke that can settle into inland valleys during fire season.
Are air quality levels in Corvallis 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: 10 August 2026 at 02:34 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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