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5-day forecast / McKinney, TX

SaturdayMostly Sunny95° / 72° 1%
SundaySlight Chance Showers And Thunderstorms94° / 74° 21%
MondayChance Rain Showers then Mostly Sunny95° / 75° 26%
TuesdayPartly Sunny96° / 75° 3%
WednesdayChance Showers And Thunderstorms89° / 72° 56%

McKinney Weather: Heat and Air Quality Alert Loom Over Weekend - Sep 26, 2 PM

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

McKinney residents face hot, dry conditions today with an active Air Quality Alert. Temperatures near 95F are expected, with a slight chance of storms tomorrow.

Cody Esparza

September 26, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 26, 2 PM local time.*

Current Conditions and Air Quality

An active Air Quality Alert is currently in effect for the McKinney area, issued by the National Weather Service. While the sky remains clear and the air feels dry, residents should be mindful of outdoor air quality levels. Current conditions show an air temperature of 91F, with a feels-like temperature of 93F.

Relative humidity sits at 41%, and the dew point is 64F. Winds are blowing from the south southeast at 8 mph, with gusts reaching 9 mph. The combination of heat and low humidity creates a dry environment that may exacerbate air quality concerns for sensitive individuals.

Today and Tonight Outlook

The day will remain mostly sunny, with a high near 95F. Heat index values could reach as high as 97F, making the air feel significantly warmer than the actual temperature. The chance of precipitation is minimal at 1%.

As evening approaches, skies will become partly cloudy. Temperatures will drop to a low around 72F, though they may rise slightly to around 74F overnight. Winds will ease to around 5 mph from the south southeast.

This transition offers a slight break from the intense daytime heat, but the overall weekend remains warm.

Tomorrow’s Forecast

Tomorrow brings a similar pattern with a high near 94F. A slight chance of showers and thunderstorms is possible after 7am, with a 20% chance of precipitation. If storms occur, rainfall amounts will likely be less than a tenth of an inch.

Skies will remain mostly sunny, but heat index values could climb to 99F. Winds will continue from the south southeast at 5 to 10 mph. As the day progresses, temperatures may fall to around 92F in the afternoon.

Given the persistent heat and the active air quality alert, it is advisable to stay hydrated, limit strenuous outdoor activities during peak heat hours, and monitor local air quality updates. Check on neighbors who may be more vulnerable to the combination of heat and poor air quality.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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Cody Esparza

Cody Esparza covers McKinney city hall, the council, and county government.

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