Air Quality in Charlestown, United States

Windy
7.0°C · 60.1% humidity
7.0°
Feels 1.0°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
22 6pm
21
14
14 9pm
14
14
14 12am
26
26
26 3am
26
26
26 6am
26
26
26 9am
26
39
39 12pm
64
39
39 3pm
39
26
Station readings
22
21
CAMS model adj -11
25
25
25
25
25
25
25
37
37
37
37
37
37
37
37
37
37
50
50
75
50
50
50
37
AD 728×90

PM2.5 Trend (24h)

22h · 2 stations
60.1%
Humidity
58.7 km/h
Wind SSW
1031.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Charlestown?

Temperature & Precipitation

PM2.55.24 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
5.24
Median
5.24
Average
5.24
Low
5.24
High
PM2.5 µg/m³ · Model: 23.4 · Bias: +18.2

What is the 7-day forecast for Charlestown?

04-09
13.3° -0.7°
04-10
19.2° 3.4°
04-11
22.8° 7.9°
04-12
17.3° 7.3°
04-13
13.1° 8.5°
1.75 mm
04-14
26.5° 13.6°
0.25 mm
04-15
25.3° 19.1°
0.19 mm
Both models agree Avg diff: 4.3°C

Where are air quality stations near Charlestown?

39
Boston
2.2 km
39
Boston
2.2 km
33
Magazine Beach Park
5.0 km PM2.5: 7.9 µg/m³ PM10: 9.2 µg/m³
22
Nubian Square - DEP Station
5.6 km PM2.5: 5.2 µg/m³
39
Boston Roxbury
5.6 km
39
Boston Von Hillern
5.9 km
37
Boston Von Hillern
5.9 km
39
Boston Von Hillern
5.9 km
35
Lynn Water Treatment Plant
13.1 km
37
Milton Blue Hill Observatory
19.0 km

What cities are near Charlestown?

22 East Boston 22 Boston 22 Chelsea 22 Somerville 22 Everett 22 Cambridge 22 Back Bay 22 Fenway/Kenmore 22 Orient Heights 22 South Boston

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T21:27 UTC.