UV Index Today in Williamson County, Texas (TX)
Tuesday, October 13, 2026 -4:23 PM CDT (GMT-5)
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The average maximum UV Index today across 19 locations in Williamson County, Texas (TX), is 5.9. The highest projected maximum is 7.5 in Liberty Hill at 1:00 PM CDT, while the lowest projected maximum is 4.5 in Austin at 12:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 4.9. The highest projected maximum is 6.6 in Thorndale at 2:00 PM CDT, and the lowest projected maximum is 3.6 in Round Rock at 1:00 PM CDT.
19 Places in Williamson County, Texas (TX)
Maximum UV Index Today