What is the air quality in Dorchester today?

The current Air Quality Index (AQI) in Dorchester is 42 (Good). PM2.5 concentration is 9.98 µg/m³.

What is the temperature in Dorchester right now?

The current temperature in Dorchester is 13.9°C (feels like 13.9°C). Humidity is 70.4% and wind speed is 19.7 km/h.

Is it safe to go outside in Dorchester?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Dorchester, United States

Cloudy

13.9°C · 70.4% humidity

13.9°

Feels 13.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

5 stations

Nearby Monitoring Stations

AQI Forecast

25 8pm

42 11pm

57 2am

55 5am

34 8am

25 11am

25 2pm

25 5pm

Air Quality Index Trend

45h · 7 stn

View full history →

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

70.4%

Humidity

19.7 km/h

Wind SW

999.7 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.98 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Dorchester?

Temperature & Precipitation

PM2.5 Trend

45h · 7 stations

PM2.59.98 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (5 stations within 25 km)

9.98

Median

8.61

Average

5.73

Low

16.9

High

PM2.5 µg/m³ · Model: 7.0 · Bias: -3.0

What is the 7-day forecast for Dorchester?

06-09

34.8° 13.9°

0.06 mm

06-10

22.5° 12.4°

1.81 mm

06-11

25.8° 9.8°

06-12

21.5° 14.7°

1.25 mm

06-13

30.7° 17.2°

0.5 mm

06-14

24.6° 9.1°

6.5 mm

06-15

24.9° 14.0°

0.38 mm

Both models agree Avg diff: 6.5°C

Where are air quality stations near Dorchester?

Boston Roxbury

3.6 km PM2.5: 8.4 µg/m³

Nubian Square - DEP Station

3.6 km PM2.5: 5.7 µg/m³

Boston

6.9 km PM2.5: 11.3 µg/m³

Boston

6.9 km PM2.5: 6.7 µg/m³

Milton Blue Hill Observatory

10.1 km PM2.5: 9.8 µg/m³

What cities are near Dorchester?

41 Ashmont 38 Mattapan 28 Roxbury Crossing 35 Jamaica Plain 36 Roslindale 56 South Boston 31 Mission Hill 37 Milton 33 Brookline 32 Fenway/Kenmore

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T03:06 UTC.