Today | Weather | Wednesday, September 3, 2025

Weather in Allen, Texas

12:52 AM
Now
Cloudy NightCloudy night, overcast skies at night with no rain.
73° F
Feels Like 73°
Precipitation 0 %
Wind 6 mph
Humidity 77 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 88°
Night 70°
Precipitation 0 %
Wind 7 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.

Allen Weather Forecast Updated

43 minutes ago
Last updated on

Air quality in Allen

NOW
56 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.29 µg/m³
PM10 10.91 µg/m³
O₃ 38.59 ppb
NO₂ 12.65 ppb
SO₂ 0.52 ppb
CO 251.81 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.