Hourly Weather | Today Thursday, February 5, 2026
Rapid City, South Dakota
8 PM
Cloudy Night
55°
Feels Like 48°
0
Humidity: 34%
UV Index: 0
Wind: 16 mph
9 PM
Cloudy Night
52°
Feels Like 45°
0
Humidity: 38%
UV Index: 0
Wind: 15 mph
10 PM
Cloudy Night
50°
Feels Like 41°
0
Humidity: 46%
UV Index: 0
Wind: 15 mph
11 PM
Cloudy Night
48°
Feels Like 39°
0
Humidity: 48%
UV Index: 0
Wind: 14 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 5.89 µg/m³
  • O3: 0.042 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 5.97 µg/m³
  • O3: 0.041 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.35 µg/m³
  • PM10: 5.97 µg/m³
  • O3: 0.041 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.27 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.040 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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