Air Quality in Watertown, United States

Partly Cloudy
2.6°C · 54.1% humidity
2.6°
Feels -3.5°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

40h · 1 stn

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

54.1%
Humidity
34.7 km/h
Wind ENE
1029.9 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5▲
13
3.25 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.53.25 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.0
Low
10-20
5.4° 4.3°
0.56 mm
10-21
16.9° 2.6°
0.06 mm
10-22
17.1° 4.2°
0.13 mm
10-23
11.9° 5.9°
8.88 mm
10-24
16.7° 1.8°
0.44 mm
10-25
11.2° 9.0°
16.75 mm
10-26
10.7° 4.8°
4.37 mm
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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 2026-10-20T21:45 UTC.