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)
41
Good
Rapid City, South Dakota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.91 μg/m³
0
55
155
255
425
605+
29.59 ppb
0
55
71
86
201
201+
1.25 ppb
0
36
76
186
605
1005+
1.24 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Rapid City, South Dakota
Rapid City, South Dakota
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AQI 27
Good
3.50μg/m³
PM2.5
14.26μg/m³
PM10
29.39ppb
O3
1.24ppb
SO2
1.11ppb
NO2
0.10ppm
CO
AQI 31
Good
3.10μg/m³
PM2.5
12.93μg/m³
PM10
34.05ppb
O3
0.14ppb
SO2
0.87ppb
NO2
0.14ppm
CO
AQI 40
Good
1.70μg/m³
PM2.5
7.71μg/m³
PM10
42.61ppb
O3
2.15ppb
SO2
1.27ppb
NO2
0.10ppm
CO
AQI 36
Good
4.50μg/m³
PM2.5
20.02μg/m³
PM10
39.42ppb
O3
1.10ppb
SO2
1.27ppb
NO2
0.14ppm
CO
AQI 40
Good
1.85μg/m³
PM2.5
20.26μg/m³
PM10
43.49ppb
O3
1.39ppb
SO2
1.08ppb
NO2
0.14ppm
CO
AQI 40
Good
2.09μg/m³
PM2.5
8.93μg/m³
PM10
42.85ppb
O3
2.42ppb
SO2
2.97ppb
NO2
0.10ppm
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 06:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Rapid City, South Dakota was observed at 02:00:00 on 2026-04-23.
The current air quality in Rapid City, South Dakota is 41, categorized as Good based on real-time data.
The most common pollutant in Rapid City, South Dakota is PM10.
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 5.247 μg/m3.
The current PM10 concentration at Rapid City, South Dakota is 43.912 μg/m3.
The current carbon monoxide (CO) concentration at Rapid City, South Dakota is 0.1 ppm.
The current sulfur dioxide (SO2) concentration at Rapid City, South Dakota is 1.247 ppb.
The current ozone (O3) concentration at Rapid City, South Dakota is 29.589 ppm.
The current nitrogen dioxide (NO2) concentration at Rapid City, South Dakota is 1.239 ppb.
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