UV Index Today in Missouri (MO)

Friday, May 22, 2026 -1:37 PMCDT (GMT-5)

The average maximum UV Index today across 1,438 locations in Missouri (MO), is 3.4. The highest projected maximum is 7.6 in Myatt at 12:00 PM CDT, while the lowest projected maximum is 0.8 in Brazeau at 1:00 PM CDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 7. The highest projected maximum is 8.6 in St. Michael at 1:00 PM CDT, and the lowest projected maximum is 3.6 in Hopkins at 3:00 PM CDT.

115 Counties in Missouri (MO)

Average Maximum UV Index Today
  • Clay County - 4.4
  • Greene County - 2.6
  • Jackson County - 5
  • St. Charles County - 1.4
  • St. Louis County - 1.6
  • St. Louis city - 1.7

517 Places in Missouri (MO)

Maximum UV Index Today
  • Kansas City - 5.4
  • St. Louis - 1.6