Worst air pollution Spokane Valley, today and tomorrow
Today (15 July): Air quality in Spokane Valley is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 52.9/100).
Tomorrow (16 July 2026): Air quality in Spokane Valley is fair. All pollutants stay as today. Pollution peaks around 4:00 AM (O3: 51.8/100). 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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Spokane Valley's air quality reflects the Spokane River valley's partial topographic enclosure in eastern Washington's Inland Northwest, with vehicle emissions from I-90 the primary local source in Spokane County's most populous suburb. Summer wildfire smoke from surrounding Idaho, Washington, and Montana forests is an increasingly severe seasonal concern, while winter temperature inversions can trap wood-burning and vehicle emissions in the valley for extended periods.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
52.9/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Fair
27.8/100
O3 (ozone):
Medium
52.9/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.5/100
PM1 (ultrafine particles):
Good
16.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Fair
21.0/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Good
14.0/100
Pollen forecast in Spokane Valley
View pollen forecastFrequently Asked Questions
Is air quality bad in Spokane Valley right now?
On 15 July 2026, overall air quality in Spokane Valley is fair. NO2 is the main pollutant at 27.8/100. Pollution peaks around 7:00 AM (O3: 52.9/100).
Will air quality be worse tomorrow in Spokane Valley?
On 16 July 2026, air quality conditions in Spokane Valley will be similar to today, with NO2 forecast at fair at 21.0/100. Pollution peaks around 4:00 AM (O3: 51.8/100).
When is air pollution at its worst in Spokane Valley?
Spokane Valley's air quality follows a clear seasonal pattern. In short, spring is often the freshest stretch, sandwiched between winter rain and summer fire season, whereas 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 Spokane Valley 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app