Today | Weather | Saturday, September 20, 2025

Weather in McAllen, Texas

03:34 AM
Now
Night
77° F
Feels Like 86°
Precipitation 6 %
Wind 4 mph
Humidity 92 %
Today
Sunny with a Chance of Thunderstorms
Day 93°
Night 75°
Precipitation 88 %
Wind 13
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.

McAllen Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 20, 2024)

Partly Sunny with Showers

Day

97°

Night

79°

Wind

9 mph

UV Index

8

Precipitation

55

Air quality in McAllen

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

Pollutant Concentrations:

PM2.5 14.93 µg/m³
PM10 17.46 µg/m³
O₃ 17.81 ppb
NO₂ 10.04 ppb
SO₂ 1.17 ppb
CO 246.39 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors