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

Longmont

Boulder County, Colorado

2026-03-11 14:00

AQI (US)

Good

Pollutants|Pollens

PM2.5

μg/m³

4.1

PM10

μg/m³

9

Weather

0℃

58%

3 kph

1 of 11

Historical Data

Places included

Data Sources

http://www.airnow.gov/

Get the App

Air Matters

Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby