Olive St, Seattle, Washington, USA Air Quality
Monitoring Station
· Seattle, United States
243
Very unhealthy
Everyone should avoid outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
124
5pm
124
124
124
8pm
124
124
124
11pm
124
104
104
2am
104
124
124
5am
124
—
—
8am
—
—
—
11am
—
—
—
2pm
—
—
CAMS model
adj +70
54
54
54
54
54
54
54
54
34
34
34
54
54
54
Air Quality Forecast (24h)
PM2.5192.9 µg/m³
×12.9 WHO
Very unhealthy
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34
Seattle-23rd Ave SW
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Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T20:02 UTC.