Worst air pollution Olympia, today and tomorrow
Today (9 August): Air quality in Olympia is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (O3: 38.0/100).
Tomorrow (10 August 2026): Air quality in Olympia is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 27.3/100). 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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Olympia's air quality reflects the south Puget Sound position in the Deschutes River estuary, with consistent Pacific maritime airflows from Puget Sound providing reliable ventilation across Washington's state capital. Vehicle emissions from I-5 and the surrounding government and services corridor are the primary local sources, while wood burning in residential areas contributes winter PM2.5 and summer wildfire smoke from Washington and Oregon forests is an increasingly frequent and severe seasonal concern for this western Washington city.
Today - 9 August | Pollution peaks at 05:00
AQI:
Fair
38.0/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
9.6/100
NO2 (nitrogen dioxide):
Good
12.2/100
O3 (ozone):
Fair
38.0/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.2/100
PM1 (ultrafine particles):
Good
7.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 07:00
AQI:
Fair
27.3/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
6.1/100
NO2 (nitrogen dioxide):
Good
10.3/100
O3 (ozone):
Fair
27.3/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
5.1/100
Pollen forecast in Olympia
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Olympia
Frequently Asked Questions
Is air quality bad in Olympia right now?
On 9 August 2026, overall air quality in Olympia is fair. AQI is the main air quality indicator at 38.0/100. Pollution peaks around 5:00 AM (O3: 38.0/100).
Will air quality be worse tomorrow in Olympia?
On 10 August 2026, air quality conditions in Olympia will be similar to today, with AQI forecast at fair at 27.3/100. Pollution peaks around 7:00 AM (O3: 27.3/100).
When is air pollution at its worst in Olympia?
Like most US cities, Olympia sees air quality shift from season to season. In short, spring is often the freshest stretch, sandwiched between winter rain and summer fire season, whereas by late summer, wildfire smoke can override the region's usual clean-air advantage for days at a time. Coastal areas see relatively little of the smoke that can settle into inland valleys during fire season.
Are air quality levels in Olympia 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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