*As of Aug 3, 12 PM local time.*
Air quality and current conditions
An active Air Quality Alert is the notable weather issue for McKinney as sunny, hot weather continues. The sky is clear this afternoon, with an air temperature of 91F and a feels-like reading of 93F. Relative humidity is 41%, and the dew point is 64F.
Wind is at 8 mph, with gusts to 6 mph. The dry, sunny pattern is keeping rain out of the forecast for both today and tomorrow, with a 0% chance of precipitation each day.
Today, tonight and tomorrow
Today stays sunny, with a high near 98F. The forecast also includes heat index values as high as 98. Tonight is expected to be clear, with a low near 74F, and temperatures rising to around 76 overnight. Heat index values tonight may be as high as 97. Southeast wind is expected around 5 mph today, then 5 to 10 mph tonight.
Tomorrow brings more sunshine and a hotter high near 100F. The forecast calls for heat index values as high as 100. The low tomorrow is near 77F, and the chance of precipitation remains 0%. South wind is expected at 5 to 10 mph.






