What is the air quality in Somerville today?

The current Air Quality Index (AQI) in Somerville is 20 (Good). PM2.5 concentration is 4.67 µg/m³.

What is the temperature in Somerville right now?

The current temperature in Somerville is 15.5°C (feels like 15.5°C). Humidity is 39.5% and wind speed is 39.5 km/h.

Is it safe to go outside in Somerville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Somerville, United States

Clear

15.5°C · 39.5% humidity

15.5°

Feels 15.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

— 1pm

—

— 4pm

—

— 7pm

—

— 10pm

—

— 1am

—

— 4am

—

— 7am

—

— 10am

—

Station readings

Air Quality Index Trend

47h · 1 stn

View full history →

Somerville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

39.5%

Humidity

39.5 km/h

Wind W

1021.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.67 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Somerville?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.54.67 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

4.67

Median

3.13

Average

0.97

Low

5.3

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +1.1

What is the 7-day forecast for Somerville?

10-20

15.5° 6.5°

15.31 mm

10-21

19.9° 4.9°

10-22

18.6° 6.7°

1.25 mm

10-23

15.4° 4.5°

10-24

12.0° 8.6°

10-25

21.1° 7.4°

29.44 mm

10-26

11.1° 5.6°

4.06 mm

Both models agree Avg diff: 4.4°C

Where are air quality stations near Somerville?

Boston

4.6 km PM2.5: 5.5 µg/m³

Boston Roxbury

6.6 km PM2.5: 5.3 µg/m³

Boston Roxbury

6.6 km PM2.5: 4.3 µg/m³

Lynn Water Treatment Plant

14.3 km PM2.5: 4.3 µg/m³

East Dedham

16.1 km 16.3°C 47.0% RH PM2.5: 0.7 µg/m³ PM10: 1.2 µg/m³

What cities are near Somerville?

20 Cambridge 20 Charlestown 18 Medford 20 Allston 22 Back Bay 19 Everett 21 Boston 21 Fenway/Kenmore 18 Malden 20 East Boston

Get AQI alerts for Somerville

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:05 UTC.