Hourly Weather | Today Monday, June 29, 2026
Great Falls, Montana
11 PM
Cloudy Night
61°
Feels Like 57°
47
Humidity: 72%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.