‘Dangerous heat wave is building’ as temperatures spike in the central and eastern U.S.

July 18 at 11:49 AM

A potentially deadly combination of heat, humidity and stagnant, polluted air has engulfed more than half of the Lower 48 states, with air temperatures climbing toward 100 from the Plains to the Midwest, Mississippi River Valley and eastward to the heavily populated Boston-to-Washington corridor.

“A widespread and dangerous heat wave is building in the central and eastern U.S.,” the National Weather Service said Thursday.

Keep reading on Washington Post

Forecast heat index values at 4 p.m. Eastern on Friday. (WeatherBell.com)

City forecasts

Here are forecasts for several major cities:

  • St. Louis: Hottest day? Friday. Forecast high? 98. Heat index? 109.
  • Chicago: Hottest day? Friday. Forecast high? 96. Peak heat index? 102.
  • Cincinnati: Hottest day? Friday. Forecast high? 96. Peak heat index? 107.
  • Detroit: Hottest day? Saturday. Forecast high? 97. Peak heat index? 111.
  • Washington: Hottest day? Saturday. Forecast high? 100. Peak heat index? 109.
  • Philadelphia: Hottest day? Saturday. Forecast high: 99. Peak heat index? 110.
  • New York: Hottest day? Saturday. Forecast high: 98. Peak heat index? 112.
  • Boston? Hottest day? Saturday. Forecast high: 93. Peak heat index? 102.

HeatAndCool.com

HeatAndCool.com

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