Air Quality in Watertown, United States
Drizzle
15.3°C · 96.0% humidity
15.3°
Feels 15.3°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Watertown's air quality — share it
AQI Forecast
24
6am
24
24
32
9am
30
28
27
12pm
26
26
25
3pm
25
25
24
6pm
24
24
24
9pm
24
24
24
12am
24
24
24
3am
24
25
Air Quality Index Trend
39h · 2 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.
96.0%
Humidity
69.2 km/h
Wind NNE
1008.8 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.78 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Watertown?
Temperature & Precipitation
PM2.5 Trend
39h · 2 stationsPM2.57.78 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
What is the 7-day forecast for Watertown?
09-05
23.6° 12.9°
2.12 mm
09-06
24.2° 19.2°
12.31 mm
09-07
21.9° 12.9°
0.06 mm
09-08
22.3° 14.2°
3.31 mm
09-09
24.9° 11.1°
15.06 mm
09-10
19.5° 13.5°
3.94 mm
09-11
25.0° 10.2°
Both models agree
Avg diff: 4.1°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 2026-09-05T13:05 UTC.