Today | Weather | Monday, April 27, 2026

Weather in Allen, Texas

12:39 PM
Now
Cloudy Weather
90° F
Feels Like 97°
Precipitation 0 %
Wind 13 mph
UV Index (0 - 11+) 10
Humidity 48 %
Today
Cloudy Weather
Day 93°
Night 73°
Precipitation 4 %
Wind 13 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Allen Weather Forecast Updated

8 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Partly Sunny with Showers

Day

84°

Night

70°

Wind

12 mph

UV Index

10

Precipitation

55 %

Air Quality in Allen

NOW
27 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.76 µg/m³
PM10 4.53 µg/m³
O3 0.029 ppm
NO2 0.5 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 1.35 µg/m³
NO 0.17 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)
PM2.52.76 µg/m³
PM104.53 µg/m³
O356.41 µg/m³
NO20.89 µg/m³
SO20.21 µg/m³
CO132.15 µg/m³
NH31.35 µg/m³
NO0.17 µg/m³