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

Hopkinton

Merrimack County, New Hampshire

2026-04-21 07:00

CAQI (Europe)

Very Low

O3

μg/m³

56.1

PM2.5

μg/m³

3.2

PM10

μg/m³

5.2

NO2

μg/m³

3.2

SO2

μg/m³

1.8

CO

μg/m³

150

Weather

-4℃

89%

0 kph

0 of 11

Historical Data

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