Heat Wave Risk Coming for Much of U.S. 

Forecasters have warned residents from the Midwest and Ohio Valley to the Mid-Atlantic and Northeast to expect a dangerous and potentially record-breaking June heat wave this week and continuing into the coming weeks. 

Big cities that will be affected include Chicago, Columbus, Albany, Syracuse, Pittsburg, Washington, D.C., New York City, Hartford, and Boston. Even northern Maine is likely to see temperatures soar into the upper 90s.

Officials anticipate an increase in demand for electricity and elevated risks to people with a high risk of heat stress or illness due to a lack of effective cooling or hydration.

While the Ohio Valley, Great Lakes, and East roast, some snow could fall in the Rockies as an unusually cold air mass settles in.