South Dakota air quality today
Live readings for South Dakota cities load as their daily data refreshes. Click any city below for its full air quality page.
Cities in South Dakota
No tracked cities yet for South Dakota.
Readings use the EPA's six-level scale, from Good (1) to Hazardous (6), and update daily. Cities without a reading refresh the next time their page loads.
How to read these numbers
The air quality index tracks pollution: ozone, fine particles (PM2.5), dust, and exhaust. Good and Moderate days are fine for almost everyone. At Unhealthy for Sensitive Groups, people with asthma or a heart condition feel it first. Unhealthy and above means everyone should cut back time outside.
Pollen is not part of this score. A Good air day in South Dakota can still be a rough allergy day, so check South Dakota pollen levels too before you plan a long day outside.