Boston, Massachusetts – Hot, hazy air will grip Boston and much of Eastern Massachusetts Monday, sending temperatures soaring close to 90°F as residents face reduced air quality and rising health risks from early morning into the afternoon. Drivers and outdoor workers should be prepared for reduced visibility and increased heat stress, with the National Weather Service warning that widespread haze will linger after 9 a.m. before sunny skies intensify the heat.
According to the National Weather Service in Boston, southwest winds overnight will keep lows in the mid-60s before temperatures spike by late morning. Sunny and hazy conditions will persist through Monday with light winds turning calm by the evening, then cooling slightly as mostly clear skies return Monday night. The heat will hold on for Tuesday, with highs near 80°F under mostly sunny skies, but a gradual cooling trend arrives by Wednesday, dropping daytime highs to the upper 70s and overnight lows in the low 60s.
Across the city, MBTA riders and commuters should carry water and limit strenuous activity Monday. Vulnerable groups, including children, seniors, and those with respiratory issues, should avoid outdoor exertion during peak afternoon hours. Air quality and visibility may remain limited until Monday night, especially in low-lying and coastal areas.
The hottest stretch breaks by midweek, with partly sunny skies and milder conditions returning Wednesday and Thursday. If you need relief, Wednesday afternoon will offer more comfortable temps for outdoor plans, but summer warmth will rebound late in the week. More advisories are possible if heat or haze returns, so check back for updates.
Five Day Forecast for Boston, Massachusetts:
- Monday: Hazy and hot, high near 89°F. Light west wind.
- Monday Night: Mostly clear, low 66°F.
- Tuesday: Mostly sunny, high near 80°F.
- Tuesday Night: Mostly cloudy, low 63°F.
- Wednesday: Partly sunny, high 78°F.
- Thursday: Partly sunny, high near 80°F.
- Friday: Sunny and mild, high near 82°F.
