Air Quality in Rapid City, United States
Windy
28.0°C · 49.3% humidity
28.0°
Feels 30.2°
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Rapid City's air quality — share it
AQI Forecast
66
5pm
66
54
60
8pm
58
57
56
11pm
56
55
55
2am
55
54
54
5am
54
27
34
8am
34
34
34
11am
34
34
34
2pm
34
34
Air Quality Index Trend
24h · 1 stnRapid City's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Rapid City is 1.1× the WHO 24-hour guideline of 15 µg/m³.
49.3%
Humidity
101.6 km/h
Wind SSE
1011.8 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
16.35 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Rapid City?
Temperature & Precipitation
PM2.5 Trend
24h · 1 stationPM2.516.35 µg/m³
×1.1 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX9.4
Very High
What is the 7-day forecast for Rapid City?
08-03
32.5° 17.7°
1.81 mm
08-04
29.8° 12.6°
0.06 mm
08-05
38.5° 16.8°
8.56 mm
08-06
33.4° 13.6°
08-07
31.0° 15.8°
9.06 mm
08-08
37.0° 13.6°
08-09
37.2° 22.3°
Both models agree
Avg diff: 4.9°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:08 UTC.