1. North America
  2. United States
  3. Colorado
  4. Boulder County

Boulder County

Colorado

2026-04-21 05:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
102.9
PM10
μg/m³
16
PM2.5
μg/m³
5.3
Weather
  • ℃
  • ℉
6℃
29%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • PM2.5
Places included
Boulder
AQI 43
Eldorado Springs
AQI 16
Gunbarrel
AQI 16
Lafayette
AQI 16
Longmont
AQI 16
Lyons
AQI 16
Nederland
AQI 16
Niwot
AQI 16
Superior
AQI 16
Ward
AQI 16
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Ward
AQI 16
Lyons
AQI 16
Nederland
AQI 16
Boulder
AQI 43
Estes Park
AQI 57
Niwot
AQI 16
Coal Creek
AQI 16
Grand Lake
AQI 53
Gunbarrel
AQI 16
Eldorado Springs
AQI 16
Longmont
AQI 16