Worst air pollution Spokane, today and tomorrow
Today (15 July): Air quality in Spokane is medium. AQI, NO2, 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 is fair. NO2 increases to fair; all other 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's air quality reflects the Spokane River valley's partial topographic enclosure between the surrounding plateau ridgelines, with vehicle emissions from I-90 and wood-burning stoves in residential areas contributing the primary local sources. Winter temperature inversions in the valley can trap emissions under persistent cold-air pools, while summer wildfire smoke from the surrounding Inland Northwest forests is an increasingly severe seasonal concern.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
52.9/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Medium
42.7/100
O3 (ozone):
Medium
52.9/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.5/100
PM1 (ultrafine particles):
Good
19.8/100
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
13.7/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Fair
33.9/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Good
16.8/100
Pollen forecast in Spokane
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Spokane
Frequently Asked Questions
Is air quality bad in Spokane right now?
On 15 July 2026, overall air quality in Spokane is medium. AQI is the main air quality indicator at 52.9/100. Pollution peaks around 7:00 AM (O3: 52.9/100).
Will air quality be worse tomorrow in Spokane?
On 16 July 2026, air quality conditions in Spokane will be worse than today, with NO2 forecast at fair at 33.9/100. Pollution peaks around 4:00 AM (O3: 51.8/100).
When is air pollution at its worst in Spokane?
Spokane'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 late summer wildfire smoke is the biggest concern, sometimes pushing air quality into unhealthy territory for days at a stretch. Prevailing onshore winds usually keep pollution moving rather than letting it settle.
Are air quality levels in Spokane 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