St. Helens Real-time Air Quality Index (AQI) & Pollution Report - Air Matters

St. Helens

Columbia County, Oregon

2026-09-20 20:00

AQI (US)

Good

PM2.5

μg/m³

7.9

Weather

23℃

53%

15 kph

0 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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