Air Quality in Watertown, United States
Drizzle
9.8°C · 98.3% humidity
9.8°
Feels 5.9°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Watertown's air quality — share it
AQI Forecast
25
10pm
25
25
38
1am
33
31
29
4am
27
26
27
7am
26
26
26
10am
25
25
25
1pm
25
25
25
4pm
25
27
25
7pm
25
27
Air Quality Index Trend
28h · 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.
98.3%
Humidity
35.8 km/h
Wind SSW
999.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Watertown?
Temperature & Precipitation
PM2.5 Trend
28h · 1 stationPM2.59.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Watertown?
06-09
24.3° 9.6°
2.44 mm
06-10
16.0° 10.7°
2.19 mm
06-11
18.9° 7.2°
06-12
20.6° 16.1°
0.13 mm
06-13
23.9° 16.8°
10.63 mm
06-14
23.1° 10.9°
0.94 mm
06-15
27.4° 18.7°
7.69 mm
Both models agree
Avg diff: 6.0°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 2026-06-09T05:47 UTC.