UV Index
UV Index
Today's UV index in Houston, United States 
will be up to 9, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With a UV index of 9 in Houston, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
Houston usually has a UV index that ranges from moderate to very high, especially in summer months when the sun is strongest. This means the sun's rays can be intense during the middle of the day.
Houston experiences hot, humid summers and mild winters. It often gets rain in spring and fall, with occasional thunderstorms. Winters are short and not very cold compared to many other places in the U.S.
Compared to nearby cities like Dallas or Austin, Houston is more humid because it is closer to the Gulf of Mexico. It gets more rain and has warmer winters than places further north or west in Texas.
See the UV index hour by hour for Houston, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.