Warning: The data reported in these pages have not been validated nor corrected. They appear just as reported by the collection instruments and are intended primarily for short-term forecasting efforts.


Current Air Quality Index Conditions


Click on the appropriate area in South Dakota to see the current Air Quality Index:

        Badlands        Brookings        Rapid City        Sioux Falls  

        Union County          Watertown        Wind Cave   


The Air Quality Program is collecting data from the School Site in Sioux Falls, the Research Farm and City Hall Sites in Brookings, the Watertown Site, the Credit Union Site in Rapid City, the Black Hawk Site, Wind Cave National Park Site, the Badlands National Park Site, and one site in Union County (Hyperion Energy Center) on an hourly basis.  We have been reporting the information from the School, Badlands, Wind Cave, Black Hawk, Brookings Reseach Farm, and Union County #1 sites for ozone and from the School, Badlands, Wind Cave, Credit Union, Watertown, and Union County #1 sites for PM2.5 to AirNow for national Air Quality Index (AQI) maps which are updated every other hour at the AirNow website http://www.airnow.gov/.  


The AQI is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you.  The maps are assigned a specific color to each AQI category to make it easier for people to understand quickly whether air pollution is reaching unhealthy levels in their communities. 


Real Time Hourly Data


The raw data will now be published as soon as practical after the end of each hour for these sites on our website.


Click on the appropriate site to view today's hourly data:


Wind Cave National Park

Badlands National Park

Sioux Falls School

Rapid City Credit Union



Black Hawk

Brookings Research Farm

Brookings City Hall

Hyperion Energy Center

Union County #1






AQ Program~




What We Do


Public Notices

Picture of the Joe Foss Building in Pierre, South Dakota and link for driving directions

Joe Foss Building
523 E. Capitol
Pierre, SD 57501
(605) 773-3151