Hourly Weather | Today Monday, January 19, 2026
Billings, Montana
9 PM
Cloudy Weather
36°
Feels Like 21°
0
Humidity: 46%
Wind: 20 mph
UV Index: 0
10 PM
Cloudy Weather
34°
Feels Like 18°
0
Humidity: 50%
Wind: 21 mph
UV Index: 0
11 PM
Cloudy Weather
34°
Feels Like 18°
0
Humidity: 51%
Wind: 21 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.71 µg/m³
  • PM10: 1.38 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.69 µg/m³
  • PM10: 1.34 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.27 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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