Today's Weather Forecast - Boston
Today's weather in Boston. high 30°C (86°F), low 21°C (70°F). Sunny.
Today’s Hourly Weather Outlook
- Wind speed
- 22 km/h
- Rain probability
- 35%
- Wind speed
- 30 km/h
- Rain probability
- 0%
- Wind speed
- 27 km/h
- Rain probability
- 0%
- Wind speed
- 23 km/h
- Rain probability
- 29%
24-Hour Rain & Temperature Forecast
Sunrise & Sunset
Air Quality Index & Health Advice
Air Quality Index
- Air quality level
- Good
- Dominant pollutant
- Dominant: O3
- Monitoring station
- Boston
- PM2.5
- 22μg/m³
- PM10
- 27μg/m³
- O₃
- 34.4ppb
- NO₂
- 3.8ppb
- SO₂
- 0.6ppb
- CO
- 1.2ppm
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Boston is forecast to reach a high of 30°C today, with an overnight low around 21°C. That's 6° above the long-term average high of 24°C for this time of year. Expect a low chance of rain (35% probability) and moderate breezes averaging 30 km/h. Air quality is currently good (AQI 47), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 24°C.
8 of the last 20 days with published data ran above normal.
That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.