Today | Weather | Friday, February 6, 2026

Weather in Somerville, Massachusetts

03:35 AM
Now
Cloudy Night
12° F
Feels Like
Precipitation 0 %
Wind 6 mph
Humidity 73 %
Today
Cloudy Weather
Day 27°
Night 21°
Precipitation 22 %
Wind 7 mph
UV Index (0 - 11+) 1

Somerville Weather Forecast Updated

19 minutes ago
Last updated on

Air Quality in Somerville

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

Pollutant Concentrations:

PM2.5 9.62 µg/m³
PM10 11.28 µg/m³
O3 0.027 ppm
NO2 10.3 ppb
SO2 1 ppb
CO 0.25 ppm
NH3 0.83 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.59.62 µg/m³
PM1011.28 µg/m³
O353.59 µg/m³
NO219.29 µg/m³
SO22.51 µg/m³
CO281.83 µg/m³
NH30.83 µg/m³
NO0 µg/m³