Air Quality in Watertown, United States
Windy
19.2°C · 47.7% humidity
19.2°
Feels 19.2°
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Watertown's air quality — share it
AQI Forecast
25
5pm
25
25
39
8pm
35
34
32
11pm
31
30
29
2am
28
28
28
5am
25
25
25
8am
24
24
24
11am
24
24
24
2pm
24
24
Air Quality Index Trend
41h · 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.
47.7%
Humidity
50.9 km/h
Wind W
1013.6 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.38 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Watertown?
Temperature & Precipitation
PM2.5 Trend
41h · 1 stationPM2.59.38 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
What is the 7-day forecast for Watertown?
08-03
23.9° 19.2°
2.13 mm
08-04
25.6° 16.0°
2.31 mm
08-05
28.8° 14.1°
3.0 mm
08-06
27.6° 17.7°
5.5 mm
08-07
26.6° 17.5°
0.69 mm
08-08
28.6° 18.1°
3.19 mm
08-09
31.2° 19.6°
1.81 mm
Both models agree
Avg diff: 3.0°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 2026-08-08T00:42 UTC.