Originally posted at 11:22 updated at 3:15 p.m.
BOSTON – The National Weather Service in Boston has extended an excessive heat watch through Tuesday evening.
An excessive heat watch is dangerously hot conditions with heat index values up to 105 possible.
MetroWest Boston is included.
The watch is in effect through July 28, at 8 p.m.
Extreme heat and humidity will significantly increase the potential for heat-related illnesses, particularly for those working or participating in outdoor activities.
Be prepared to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during hot weather when car interiors can reach lethal temperatures in a matter of minutes.
Take extra precautions if you work or spend time outside.
When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments.
Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9-1-1