Today | Weather | Tuesday, August 4, 2026

Active Weather Warnings

Special Weather Statement

Weather in Brownsville, Texas

11:26 AM

Now

97° F

Feels Like 108°

Precipitation 0 %

Wind 16 mph

UV Index (0 - 11+) 8

Humidity 55 %

Today

Day 99°

Night 81°

Precipitation 49 %

Wind 16 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.

Brownsville Weather Forecast Updated

6 minutes ago

Last updated on August 04, 2026 at 11:19 AM

Weather Forecast History

Last Year's Weather on This Day (August 4, 2025)

Day

99°

Night

79°

Wind

8 mph

Precipitation

25 %

Air Quality in Brownsville

NOW

24 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 5.73 µg/m³

PM₁₀ 10.73 µg/m³

O₃ 0.023 ppm

NO₂ 0.2 ppb

SO₂ 0.3 ppb

CO 0.09 ppm

NH₃ 0.17 µg/m³

NO 0.07 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 – 5.73 µg/m³

PM₁₀ – 10.73 µg/m³

O₃ – 44.69 µg/m³

NO₂ – 0.3 µg/m³

SO₂ – 0.69 µg/m³

CO – 101.88 µg/m³

NH₃ – 0.17 µg/m³

NO – 0.07 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Brownsville

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued August 4 at 9:22AM CDT by NWS Brownsville TX

Aug 4, 9:22 AM → Aug 4, 7:15 PM

The combination of hot temperatures and humidity will produce
heat index values between 105 and 110 degrees for several hours
this afternoon into this evening. A few locations may briefly
experience heat index values above 111 degrees.

If spending time outside today, drink plenty of water, wear light
weight and light colored clothing, and take frequent breaks from
the heat. Young children and pets should never be left unattended
in vehicles.

Updated: Aug 4, 11:19 AM Source: NWS Alert