Today | Weather | Thursday, September 10, 2026

Active Weather Warnings

Special Weather Statement

Weather in McAllen, Texas

06:35 AM

Now

81° F

Feels Like 91°

Precipitation 6 %

Wind 6 mph

Humidity 91 %

Today

Day 102°

Night 82°

Precipitation 55 %

Wind 12 mph

UV Index (0 - 11+) 7

McAllen Weather Forecast Updated

4 minutes ago

Last updated on September 10, 2026 at 6:31 AM

Weather Forecast History

Last Year's Weather on This Day (September 10, 2025)

Day

97°

Night

79°

Wind

4 mph

Precipitation

55 %

Air Quality in McAllen

NOW

15 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 1.75 µg/m³

PM₁₀ 2.34 µg/m³

O₃ 0.016 ppm

NO₂ 0.4 ppb

SO₂ 0 ppb

CO 0.12 ppm

NH₃ 0.61 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 – 1.75 µg/m³

PM₁₀ – 2.34 µg/m³

O₃ – 31.55 µg/m³

NO₂ – 0.72 µg/m³

SO₂ – 0.1 µg/m³

CO – 135.78 µg/m³

NH₃ – 0.61 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for McAllen

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued September 10 at 5:23AM CDT by NWS Brownsville TX

Sep 10, 5:23 AM → Sep 10, 7:00 PM

The combination of hot temperatures and elevated humidity levels
will produce heat index values between 108 and 111 degrees for
several hours this afternoon into this evening. A few locations
may briefly experience heat index values above 111 degrees.

If you plan to spend time outside, 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: Sep 10, 6:31 AM Source: NWS Alert