Dangerous Heat Wave Is Set to Test the Biggest US Power Grid
- PJM warns of potential emergency conditions on Tuesday
- High at Chicago O’Hare is expected to break record for date
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Soaring temperatures across the US Mid-Atlantic and Midwest are poised to strain the country’s biggest power grid as people crank up air conditioners.
Chicago’s O’Hare International Airport is forecast to reach 97F (36C) on Tuesday, breaking a record for the date, according to Josh Weiss, a forecaster at the US Weather Prediction Center. PJM Interconnection, which operates the electricity grid in 13 states, said emergency conditions are possible. New York City and Philadelphia, meanwhile, are expected to hit the mid- to high-90s on Wednesday.