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Air Quality in Seattle, United States
Updated 2026-05-21T08:00:00-07:00 · Station: 10th and Weller, Seattle, Washington, USA
41
Good · Dominant pollutant: PM2.5
Air quality is satisfactory; air pollution poses little or no risk.
The current Air Quality Index (AQI) in Seattle is 41, categorized as Good. Air quality is satisfactory; air pollution poses little or no risk.
Pollutants & conditions
| Measurement | Value |
|---|
| PM2.5 | 41 |
| Nitrogen Dioxide (NO₂) | 28.7 |
| Carbon Monoxide (CO) | 500 |
| Temperature (°C) | 11.6 |
| Humidity (%) | 85.5 |
| Pressure (hPa) | 1024.1 |
| Wind (m/s) | 5.5 |
| Wind Gust (m/s) | 8.5 |
PM2.5 forecast
| Date | Avg | Min | Max |
|---|
| 2026-05-19 | 27 | 14 | 39 |
| 2026-05-20 | 17 | 10 | 28 |
| 2026-05-21 | 21 | 17 | 32 |
| 2026-05-22 | 22 | 15 | 63 |
| 2026-05-23 | 26 | 15 | 43 |
Nearby cities
More cities in United States · All cities