Today | Weather | Wednesday, June 10, 2026

Weather in Somerville, Massachusetts

12:19 AM
Now
Stormy Weather
72° F
Feels Like 66°
Precipitation 66 %
Wind 8 mph
Humidity 81 %
Today
Partly Sunny with Showers
Day 90°
Night 68°
Precipitation 49 %
Wind 12 mph
UV Index (0 - 11+) 7

Somerville Weather Forecast Updated

28 minutes ago
Last updated on

Air Quality in Somerville

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.29 µg/m³
PM10 7.22 µg/m³
O3 0.040 ppm
NO2 0.8 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.04 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)
PM2.52.29 µg/m³
PM107.22 µg/m³
O378.18 µg/m³
NO21.58 µg/m³
SO20.58 µg/m³
CO104.44 µg/m³
NH30.04 µg/m³
NO0 µg/m³