Once again, record highs will be challenged in both Boston and Worcester. We are currently forecasting a tie of the near 100-year-old record in Boston. Temperatures on Wednesday will only be a few degrees "cooler" and there will be no relief from the high humidity.

A heat advisory is in effect until 10 p.m. for Metro Detroit as temperatures are expected to feel above 100 degrees, according to the National Weather Service. Monday's temperature, humidity and light wind are contributing to the conditions, according to Andrew Arnold, a meteorologist at the NWS Detroit office.