*As of Aug 4, 4 AM local time.*
Air quality alert, then heat
McKinney has an active air quality alert, and the heat remains the other main weather story. Conditions are clear during the overnight period, with an air temperature of 75F and a feels-like reading of 76F. Relative humidity is 74%, and the dew point is 66F.
Wind is light at 3 mph, with gusts up to 10 mph. The quiet sky does not mean conditions will feel mild for long: today’s forecast calls for sunshine and a high near 101F, with heat index values as high as 102F.
Today, tonight and tomorrow
Today stays sunny, with a low near 75F and a high near 101F. The chance of precipitation is only 2%. South southeast wind is expected at 5 to 10 mph.
Tonight is expected to stay mostly clear. The forecast calls for a low around 78F, with temperatures rising to around 80F overnight. Heat index values may still be as high as 102F, and south wind is expected at 5 to 10 mph.
Tomorrow brings more sun and more heat. The high is near 101F, the low is near 80F, and the chance of precipitation remains 2%. Heat index values may reach as high as 104F, with south southwest wind at 5 to 10 mph.
