Air Quality in Chelsea, United States

Cloudy
13.9°C · 70.4% humidity
13.9°
Feels 13.9°
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast
25 8pm
27
34
39 11pm
58
57
56 2am
55
55
55 5am
54
54
34 8am
27
25
25 11am
25
25
25 2pm
25
25
25 5pm
25
25
AD 728×90

Air Quality Index Trend

45h · 7 stn

Chelsea'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▲
39
9.41 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chelsea?

Temperature & Precipitation

PM2.5 Trend

45h · 7 stations
PM2.59.41 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (5 stations within 25 km)
9.41
Median
8.61
Average
5.73
Low
16.9
High
PM2.5 µg/m³ · Model: 7.0 · Bias: -2.4
Both models agree Avg diff: 6.5°C

Where are air quality stations near Chelsea?

47
Boston
4.3 km PM2.5: 11.3 µg/m³
28
Boston
4.3 km PM2.5: 6.7 µg/m³
24
Nubian Square - DEP Station
8.0 km PM2.5: 5.7 µg/m³
35
Boston Roxbury
8.0 km PM2.5: 8.4 µg/m³
41
Milton Blue Hill Observatory
21.1 km PM2.5: 9.8 µg/m³

What cities are near Chelsea?

41 East Boston 40 Orient Heights 37 Everett 36 Revere 39 Charlestown 41 Boston 40 Winthrop 36 Malden 37 Somerville 36 Cambridge
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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 2026-06-09T03:04 UTC.