1. North America
  2. United States
  3. Montana
  5. Boulder

Boulder

Jefferson County, Montana

2026-08-10 07:00
AQI (US)
Moderate
Pollutants
PM2.5
μg/m³
19.8
PM10
μg/m³
23.5
Weather
  • ℃
  • ℉
17℃
48%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • PM10

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

Boulder
AQI 71
Basin
AQI 72
Radersburg
AQI 67
Walkerville
AQI 95
Helena
AQI 103
Whitehall
AQI 93
Butte
AQI 95
East Helena
AQI 103
Elliston
AQI 70
Cardwell
AQI 84
Helena Valley Southeast
AQI 103