Today | Weather | Sunday, June 21, 2026

Weather in McAllen, Texas

04:34 PM
Now
Cloudy Weather
90° F
Feels Like 100°
Precipitation 7 %
Wind 17 mph
UV Index (0 - 11+) 3
Humidity 65 %
Today
Cloudy Weather
Day 90°
Night 82°
Precipitation 25 %
Wind 14 mph
UV Index (0 - 11+) 6

McAllen Weather Forecast Updated

42 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 21, 2025)
Partly Sunny with Showers

Day

84°

Night

77°

Wind

11 mph

UV Index

4

Precipitation

90 %

Air Quality in McAllen

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.19 µg/m³
PM10 2.48 µg/m³
O3 0.026 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.3 µg/m³
NO 0.04 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)
PM2.52.19 µg/m³
PM102.48 µg/m³
O351.11 µg/m³
NO20.41 µg/m³
SO20.17 µg/m³
CO118.75 µg/m³
NH30.3 µg/m³
NO0.04 µg/m³