Stay updated with real-time air quality in Rapid City, South Dakota featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
27
Good
Rapid City, South Dakota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.22 μg/m³
0
55
155
255
425
605+
29.06 ppb
0
55
71
86
201
201+
1.13 ppb
0
36
76
186
605
1005+
1.03 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Rapid City, South Dakota
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AQI 29
Good
3.11μg/m³
PM2.5
18.01μg/m³
PM10
30.94ppb
O3
1.20ppb
SO2
1.02ppb
NO2
0.12ppm
CO
AQI 38
Good
3.73μg/m³
PM2.5
16.29μg/m³
PM10
41.33ppb
O3
0.15ppb
SO2
0.42ppb
NO2
0.12ppm
CO
AQI 35
Good
4.49μg/m³
PM2.5
19.95μg/m³
PM10
37.83ppb
O3
1.21ppb
SO2
1.00ppb
NO2
0.11ppm
CO
AQI 37
Good
2.21μg/m³
PM2.5
9.03μg/m³
PM10
39.54ppb
O3
1.19ppb
SO2
0.93ppb
NO2
0.14ppm
CO
AQI 36
Good
0.60μg/m³
PM2.5
2.00μg/m³
PM10
39.03ppb
O3
0.82ppb
SO2
4.84ppb
NO2
0.15ppm
CO
AQI 35
Good
1.34μg/m³
PM2.5
8.82μg/m³
PM10
38.01ppb
O3
0.69ppb
SO2
1.00ppb
NO2
0.11ppm
CO
Air quality data and pollutant measurements for South Dakota, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Rapid City, South Dakota is updated every hour.
The worst air quality in Rapid City, South Dakota in the last 24 hours was observed at 11:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in Rapid City, South Dakota was observed at 06:00:00 on 2026-03-09.
The current air quality in Rapid City, South Dakota is 27, categorized as Good based on real-time data.
The most common pollutant in Rapid City, South Dakota is O3.
If the air quality in Rapid City, South Dakota is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Rapid City, South Dakota is 0.974 μg/m3.
The current PM10 concentration at Rapid City, South Dakota is 20.22 μg/m3.
The current carbon monoxide (CO) concentration at Rapid City, South Dakota is 0.117 ppm.
The current sulfur dioxide (SO2) concentration at Rapid City, South Dakota is 1.134 ppb.
The current ozone (O3) concentration at Rapid City, South Dakota is 29.061 ppm.
The current nitrogen dioxide (NO2) concentration at Rapid City, South Dakota is 1.035 ppb.
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