Hourly Weather | Today Sunday, September 13, 2026
Billings, Montana
9 PM
Rainy Night
72°
Feels Like 66°
44
Humidity: 49%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
66°
Feels Like 64°
43
Humidity: 52%
UV Index: 0
Wind: 7 mph
11 PM
Rainy Night
64°
Feels Like 61°
52
Humidity: 58%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.02 µg/m³
  • PM10: 3.67 µg/m³
  • O3: 0.031 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.

10 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.93 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 3.17 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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