Harris County, TX: Current UV Index and Hourly Forecast

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As of 6:38 PM CDT on July 17, 2025, all 37 cities in Harris County, TX in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Houston, TX with a reading of 1.8.

Over the next 24 hours, the highest UV Index reading in Harris County, TX is expected to be 8.5 in Houston between 3:00 PM - 4:00 PM CDT tomorrow.

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Current UV Index in Cities in Harris County, TX

• Aldine - 1.8
• Atascocita - 1.8
• Barrett - 1.4
• Baytown - 1.4
• Bellaire - 1.8
• Bunker Hill Village - 1.8
• Channelview - 1.4
• Cloverleaf - 1.8
• Crosby - 0.9
• Deer Park - 1.4
• El Lago - 1.7
• Galena Park - 1.8
• Hedwig Village - 1.8
• Highlands - 1.4
• Hilshire Village - 1.8
• Houston - 1.8
• Humble - 1.8
• Hunters Creek Village - 1.8
• Jacinto City - 1.8
• Jersey Village - 1.8
• Katy - 1.8
• La Porte - 1.4
• Morgan's Point - 1.4
• Nassau Bay - 1.7
• Pasadena - 1.8
• Piney Point Village - 1.8
• Seabrook - 1.7
• Sheldon - 1.8
• Shoreacres - 1.7
• South Houston - 1.8
• Southside Place - 1.8
• Spring - 1.8
• Spring Valley Village - 1.8
• Taylor Lake Village - 1.7
• Tomball - 1.8
• Webster - 1.7
• West University Place - 1.8