A yellow heat health alert has been extended for seven regions in England amid the country's fourth heatwave of the summer.

The intense heat has prompted air quality alerts across most of Southern New England, and Boston has declared a heat emergency through Wednesday. Also, heat advisories have been issued for parts of New Hampshire into Tuesday.

"Dry and hot weather to start the week with increasing humidity." The post Here’s how hot it could get during this week’s heat wave, according to Boston meteorologists appeared first on Boston.com.