Air Quality in Watertown, United States

Windy
7.9°C · 80.4% humidity
7.9°
Feels 3.1°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
24 7am
24
24
32 10am
30
28
27 1pm
27
27
26 4pm
26
26
27 7pm
27
24
24 10pm
24
24
24 1am
24
24
24 4am
24
24
AD 728×90

Air Quality Index Trend

33h · 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. Current PM2.5 concentration in Watertown is 1.5× the WHO annual guideline of 5 µg/m³.

80.4%
Humidity
41.5 km/h
Wind NNE
1026.4 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
32
7.71 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

33h · 1 station
PM2.57.71 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
05-29
20.4° 7.9°
0.81 mm
05-30
16.8° 7.7°
8.38 mm
05-31
20.1° 6.3°
0.06 mm
06-01
24.0° 13.4°
06-02
16.4° 10.4°
0.31 mm
06-03
22.6° 16.1°
1.44 mm
06-04
21.1° 11.8°
0.06 mm
Get AQI alerts for Watertown

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T14:47 UTC.