What is the air quality in Williamstown today?

The current Air Quality Index (AQI) in Williamstown is 33 (Good). PM2.5 concentration is 7.87 µg/m³.

What is the temperature in Williamstown right now?

The current temperature in Williamstown is 19.0°C (feels like 19.0°C). Humidity is 70.6% and wind speed is 38.7 km/h.

Is it safe to go outside in Williamstown?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 6.9 (High).

Air Quality in Williamstown, United States

Cloudy

19.0°C · 70.6% humidity

19.0°

Feels 19.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

24 12pm

33 3pm

27 6pm

28 9pm

25 12am

24 3am

25 6am

25 9am

Air Quality Index Trend

47h · 4 stn

View full history →

Williamstown's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

70.6%

Humidity

38.7 km/h

Wind ESE

1020.1 hPa

Pressure

6.9

UV High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.87 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Williamstown?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations

PM2.57.87 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX6.9

High

What is the 7-day forecast for Williamstown?

05-29

19.0° 12.7°

0.62 mm

05-30

25.6° 10.6°

2.56 mm

05-31

30.8° 12.7°

06-01

28.0° 13.4°

3.69 mm

06-02

23.8° 15.0°

06-03

24.2° 18.5°

1.94 mm

06-04

23.8° 19.2°

0.31 mm

Both models agree Avg diff: 4.5°C

Where are air quality stations near Williamstown?

3184 League Island Blvd

27.5 km PM2.5: 5.1 µg/m³

Pattison & Galloway

27.8 km PM2.5: 5.1 µg/m³

AMS SWA Site

29.2 km PM2.5: 4.4 µg/m³

2600 Penrose Ave

29.7 km PM2.5: 5.6 µg/m³

3001 S 84th St

31.6 km PM2.5: 4.8 µg/m³

7331 Lindbergh Blvd

32.0 km PM2.5: 5.1 µg/m³

What cities are near Williamstown?

22 Sicklerville 23 Glassboro 19 Jackson 22 Lindenwold 22 Sewell 34 Vineland 34 South Vineland 22 Cherry Hill 33 Camden 22 Mount Laurel

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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 2026-05-29T19:14 UTC.