Air quality in South Dakota

Air quality index (AQI⁺) and PM2.5 air pollution in South Dakota • 17:11, Apr 23

Live most polluted city ranking

Real-time South Dakota most polluted city ranking

#	Cities	AQI⁺ US
1	Brookings	58
2	Eagle Butte	56
3	Watertown	50
4	Buffalo	39
5	Sioux Falls	39
6	Pierre	37
7	Hot Springs	35
8	Interior	33
9	Rapid City	27
10	Fort Thompson	25

Live cleanest city ranking

Real-time South Dakota cleanest city ranking

#	Cities	AQI⁺ US
1	Custer	15
2	Vermillion	18
3	Aberdeen	22
4	Fort Thompson	25
5	Rapid City	27
6	Interior	33
7	Hot Springs	35
8	Pierre	37
9	Buffalo	39
10	Sioux Falls	39

Wildfire engulfs a dense forest

Wildfire Map Spotlight: Pineland Road Fire, Georgia

A man wipes sweat from his face under the scorching sun.

Heatwave Map Spotlight: Northern, Central, and Eastern India

Wildfire Map Spotlight: Brantley Highway 82 Fire, Georgia

Which is the most polluted city in South Dakota?

globe background

Connect With IQAir

Get exclusive articles, product updates, tips, and occasional offers delivered to your inbox. You can unsubscribe at any time.

GSA contract holder

View Privacy Policy

Privacy Policy© 2026 IQAir. All rights reserved