Today | Weather | Sunday, September 14, 2025

Weather in Boston, Massachusetts

01:32 AM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 5 %
Wind 7 mph
Humidity 92 %
Today
Partly Sunny with Showers
Day 75°
Night 55°
Precipitation 55 %
Wind 11
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Boston Weather Forecast Updated

53 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 14, 2024)

Cloudy Night

Day

79°

Night

57°

Wind

6 mph

Precipitation

0

Air quality in Boston

NOW
40 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 6.34 µg/m³
PM10 7.64 µg/m³
O₃ 26.63 ppb
NO₂ 5.84 ppb
SO₂ 0.56 ppb
CO 304.73 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors