Today | Weather | Monday, May 11, 2026

Active Weather Warnings

Severe Thunderstorm Watch

Weather in Houston, Texas

05:03 AM

Now

70° F

Feels Like 70°

Precipitation 58 %

Wind 7 mph

Humidity 96 %

Today

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 May 11, 2026 at 4:09 AM

Weather Forecast History

Last Year's Weather on This Day (May 11, 2025)

Day

77°

Night

61°

Wind

11 mph

UV Index

Precipitation

75 %

Air Quality in Houston

NOW

22 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 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

PM_2.5 – 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)

PM_2.5 – 5.19 µg/m³

PM₁₀ – 7.15 µg/m³

O₃ – 31.23 µg/m³

NO₂ – 1.7 µg/m³

SO₂ – 0.4 µg/m³

CO – 111 µg/m³

NH₃ – 0.89 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

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