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

St. Helens

Columbia County, Oregon

2025-12-21 20:00

AQC (Australia)

Good

PM2.5

μg/m³

2.9

Weather

7℃

88%

7 kph

1 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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