‘Merciless’ heat, humidity sticks to nearly all of US

That makes three consecutive days of 90 degrees or better, which is the definition of a heatwave.

If the July heat lasts more than a week, then this year’s July heat will surpass the all-time monthly heat recorded in July 1936, which is during the Dust Bowl.

The National Weather Service says temperatures will be so hot, they could make you sick.

On Monday, almost all of the lower 48 states could hit 95 degrees, according to the weather service. Let’s hope our Canadian friends send us a cool breeze. Both weather services urged residents to reschedule strenuous activity to the early morning or evening, and to wear light-weight and loose-fitting clothing when possible and to drink plenty of water.

“Kids are really resilient, they will play and go outside and won’t want to stop”, Robert Hughes, an emergency medicine physician at the Emergency Medicine at University Hospitals Case Medical Center told ABC News.

Get ready for a hot weekend. Heat indexes soared to over 110 degrees as far north as Minneapolis and Chicago, and the District of Columbia reported the mercury hit 100 degrees Friday afternoon.

A heat dome, made of high-pressure air, is raising temperatures from Canada to Mexico affecting some 122 million Americans over an area stretching 830,000 square miles amid risky fires and thunderstorms. There is a 30 percent chance of that.

The excessive heat zone included Philadelphia, where the Democratic National Convention will open Monday.

By 3:27 a.m. Sunday the National Weather Service had already issued a Heat Advisory for Monday.

The bad news is that the air may be a bit soupier than yesterday and dew points could stay in the 70s, which will keep the heat index high.

On Saturday it hit 98 degrees in Hawthorne, but the record for that day was 102 degrees, which was set in 2011, according to Ziff.

“Places that do see (thunderstorms), will see some strong storms and dusty winds”, Frugis said. Temperatures tomorrow could top out in the lower 90s. Chicago, IL 60639 COOK COUNTY SUBURBS Berwyn Library, 2700 S. Harlem, Berwyn; Berwyn Police Department, 6401 W. 31st, Berwyn; Bloom Township Village Building, 425 S. Halsted, Chicago Heights; Bremen Township Community Cneter, 15350 S. Oak Park, Oak Forest; Bremen Township Administrative Office, 16361 S. Kedzie Pkwy.

Be careful out there.