Peak UV index by city
| City | Population | Peak UV | Exposure | UV 3+ hours |
|---|---|---|---|---|
| Sioux Falls | 213,748 | 0 | Low | Below 3 all day |
| Rapid City | 80,589 | 2 | Low | Below 3 all day |
| Aberdeen | 27,961 | 1 | Low | Below 3 all day |
| Brookings | 25,355 | 0 | Low | Below 3 all day |
UV 3+ hours show the window from the first forecast hour at 3 or above to the end of the last. The EPA recommends sun protection at UV 3 and above. Open a city for its current-hour forecast and hourly chart. Forecast sources and limitations.
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