Longmont Real-time Air Quality Index (AQI) & Pollen Report - Air Matters

Longmont

Boulder County, Colorado

2026-05-09 21:00

AQI (US)

Good

Pollutants|Pollens

PM2.5

μg/m³

4.3

PM10

μg/m³

18

Weather

25℃

21%

26 kph

6 of 11

Historical Data

Places included

Data Sources

http://www.airnow.gov/

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