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5-day forecast / Allen, TX

TuesdaySunny102° / 81°
WednesdaySunny101° / 82° 1%
ThursdayMostly Sunny101° / 82° 2%
FridayMostly Sunny102° / 82° 6%
SaturdaySunny100° / 77° 8%

Allen, TX: Extreme Heat Warning and Air Quality Alert in Effect - Jul 21, 8 PM

Allen weather, updated every four hours — local forecasts you can trust.

An Extreme Heat Warning and Air Quality Alert are active for Allen, TX. Current conditions show a heat index of 107F with oppressive humidity. Temperatures will remain dangerously high through tomorrow.

Zane Lowery

July 22, 20262 min read

National Weather Service radar for North Texas (KFWS)
National Weather Service radar for North Texas (KFWS)

*As of Jul 21, 8 PM local time.*

Dangerous Heat and Air Quality Concerns

Allen, TX, is currently under the influence of two active National Weather Service alerts: an Extreme Heat Warning and an Air Quality Alert. The current environment is hazardous, with an air temperature of 95F and a heat index (feels-like) of 107F. The air is oppressively humid, with a dew point of 75F and relative humidity at 53%.

Winds are light, blowing from the south southeast at 5 mph with gusts up to 8 mph, under a clear sky.

The Extreme Heat Warning is in effect until July 22 at 8:00PM CDT. This alert underscores the severity of the current heat, which poses significant health risks. Simultaneously, an Air Quality Alert issued July 21 at 2:42PM CDT indicates that air quality levels may reach unhealthy thresholds, compounding the stress on residents already dealing with extreme temperatures.

Forecast for Today, Tonight, and Tomorrow

Today, the high will reach near 104F, with a low near 83F. There is a 0% chance of precipitation, and skies will remain clear.

Tonight, conditions will stay clear with a low around 83F. Temperatures are expected to rise to around 85F overnight. Heat index values will climb as high as 109. Winds will shift to south southeast at 0 to 5 mph.

Tomorrow, the area will see sunny skies with a high near 102F. The heat index is forecast to peak at 113. Winds will become northeast at 5 to 10 mph.

The chance of precipitation is minimal at 2%. Tomorrow night will be clear with a low around 79F, rising to around 81F overnight, with heat index values as high as 108 and east northeast winds at 5 to 10 mph.

Safety Reminders

Given the Extreme Heat Warning and high heat index values, it is critical to stay hydrated and limit midday exertion. Seek air-conditioned environments during the peak heat hours. Additionally, due to the Air Quality Alert, individuals with respiratory sensitivities should monitor air quality levels and consider limiting prolonged outdoor activity.

Check on neighbors and vulnerable community members to ensure their safety during this dangerous heat event.

National Weather Service radar for North Texas (KFWS)

Sources

https://radar.weather.gov

https://api.weather.gov

https://open-meteo.com

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Zane Lowery

Zane Lowery covers weather, storms, and seasonal life around Allen.

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