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

Longmont

Longmont, Colorado

2026-09-21 16:00

AQI (China)

Excellent

Pollutants|Pollens

PM2.5

μg/m³

5.6

Weather

19℃

59%

8 kph

0 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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