Today | Weather | Monday, May 11, 2026
Active Weather Warnings

Weather in Houston, Texas

05:03 AM
Now
Stormy Weather
70° F
Feels Like 70°
Precipitation 58 %
Wind 7 mph
Humidity 96 %
Today
Sunny with a Chance of Thunderstorms
Day 81°
Night 68°
Precipitation 55 %
Wind 9 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Houston Weather Forecast Updated

53 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 11, 2025)
Sunny with a Chance of Thunderstorms

Day

77°

Night

61°

Wind

11 mph

UV Index

10

Precipitation

75 %

Air Quality in Houston

NOW
22 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 5.19 µg/m³
PM10 7.15 µg/m³
O3 0.016 ppm
NO2 0.9 ppb
SO2 0.2 ppb
CO 0.10 ppm
NH3 0.89 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.55.19 µg/m³
PM107.15 µg/m³
O331.23 µg/m³
NO21.7 µg/m³
SO20.4 µg/m³
CO111 µg/m³
NH30.89 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Houston

Severe Future Possible

Severe Thunderstorm Watch

Severe Thunderstorm Watch issued May 11 at 3:03AM CDT until May 11 at 5:00AM CDT by NWS Houston/Galveston TX
May 11, 3:03 AM May 11, 5:00 AM
Severe Thunderstorm Watch 198 remains valid until 5 AM CDT early
this morning for the following areas

In Texas this watch includes 6 counties

In southeast Texas

Brazoria Fort Bend Galveston
Harris Matagorda Montgomery

This includes the cities of Alvin, Angleton, Bay City, Clute,
Conroe, Dickinson, First Colony, Freeport, Friendswood,
Galveston, Houston, Lake Jackson, League City, Mission Bend,
Missouri City, Palacios, Pearland, Pecan Grove, Rosenberg,
Sugar Land, Texas City, and The Woodlands.
Updated: May 11, 4:09 AM Source: NWS Alert