Watertown Real-time Air Quality Index (AQI) & Pollution Report - Air Matters

Watertown

Middlesex County, Massachusetts

2025-12-31 15:00

AQI (US)

Good

PM2.5

μg/m³

3.1

PM10

μg/m³

11

Weather

-1℃

50%

26 kph

1 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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