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 stnWatertown'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
Which pollutant is driving the AQI?
PM2.5▲
3.25 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Watertown?
Temperature & Precipitation
PM2.5 Trend
40h · 1 stationPM2.53.25 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.0
Low
What is the 7-day forecast for Watertown?
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
Both models agree
Avg diff: 5.4°C
What cities are near Watertown?
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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.