Harris County, TX: Current UV Index and Hourly Forecast

As of 3:03 PM CDT on August 8, 2025, out of 37 cities in Harris County, TX in our database, 31 cities (84%) have a UV Index reading of Very High, while 6 cities (16%) have a UV Index reading of High. The city with the highest UV Index reading right now is Katy, TX with a reading of 8.2.

Over the next 24 hours, the highest UV Index reading in Harris County, TX is expected to be 10.2 in Houston between 1:00 PM - 2:00 PM CDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Harris County, TX as of 3:03 PM CDT, August 8, 2025

Current UV Index in Cities in Harris County, TX

3:03 PM CDT, August 8, 2025