UV Index Today in Jefferson County, Missouri (MO)

The average maximum UV Index today across 35 locations in Jefferson County, Missouri (MO), is 2.8. The highest projected maximum is 3 in Valle at 12:00 PM CST, while the lowest projected maximum is 2.4 in Oakville at 12:00 PM CST.

Tomorrow, the average maximum UV Index across those same locations is expected to be 3.2. The highest projected maximum is 3.3 in Imperial at 12:00 PM CST, and the lowest projected maximum is 3.1 in Meramec at 12:00 PM CST.