It remains hot and humid in Massachusetts on Monday.

The heat index will hit as high as 100 degrees with temperatures feeling hottest in Western Massachusetts. This follows a heat index well above 100 degrees hitting the western part of the state over the weekend.

A heat advisory remains in effect until 9 p.m. Monday evening for the following counties: Bristol, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth and Worcester.

Temperatures will remain near or above 90 degrees high with high humidity making it feel hotter through Friday.