*As of Jul 21, 4 PM local time.*
Dangerous Heat and Air Quality Concerns
McKinney, TX is currently under the influence of two active National Weather Service alerts: an Extreme Heat Warning and an Air Quality Alert. The heat warning is classified as severe with expected urgency, while the air quality alert’s severity and urgency are listed as unknown. These alerts underscore the hazardous conditions residents are facing right now.
Current conditions show an air temperature of 100F, but the heat index makes it feel like 110F. The air is quite humid, with a relative humidity of 40% and a dew point of 72F. Winds are blowing from the north at 8 mph, with gusts reaching 10 mph. The sky remains clear overhead.
Forecast for Today and Tomorrow
Today, the National Weather Service forecasts sunny skies with a high near 104F. Heat index values are expected to reach as high as 113. North winds will be around 5 mph.
There is a 0% chance of precipitation. Overnight, conditions will become mostly clear with a low around 82F. Temperatures may rise to around 84F during the night.
Heat index values will remain high at 112. Winds will shift to the east southeast at 0 to 5 mph.
Tomorrow, the forecast calls for sunny skies and a high near 102F. Heat index values could again peak at 113. North northeast winds will pick up slightly to 5 to 10 mph.
The chance of precipitation is minimal at 2%. Tomorrow night will be clear with a low around 78F. Temperatures may rise to around 80F overnight.
