What is the air quality in Williamstown today?

The current Air Quality Index (AQI) in Williamstown is 23 (Good). PM2.5 concentration is 5.39 µg/m³.

What is the temperature in Williamstown right now?

The current temperature in Williamstown is 11.7°C (feels like 11.7°C). Humidity is 71.0% and wind speed is 34.6 km/h.

Is it safe to go outside in Williamstown?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Williamstown, United States

Cloudy

11.7°C · 71.0% humidity

11.7°

Feels 11.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 88 stn

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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.

71.0%

Humidity

34.6 km/h

Wind ENE

1027.7 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.39 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Williamstown?

Temperature & Precipitation

PM2.5 Trend

45h · 88 stations

PM2.55.39 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Williamstown?

10-21

21.9° 8.4°

10-22

20.6° 13.2°

8.31 mm

10-23

17.9° 7.8°

10-24

16.1° 11.4°

0.25 mm

10-25

18.9° 7.5°

0.69 mm

10-26

16.4° 10.7°

7.81 mm

10-27

12.8° 8.7°

8.06 mm

Both models agree Avg diff: 3.5°C

Where are air quality stations near Williamstown?

3184 League Island Blvd

27.5 km PM2.5: 4.8 µg/m³

Pattison & Galloway

27.8 km PM2.5: 5.2 µg/m³

AMS SWA Site

29.2 km PM2.5: 4.7 µg/m³

2600 Penrose Ave

29.7 km PM2.5: 5.2 µg/m³

3001 S 84th St

31.6 km PM2.5: 4.9 µg/m³

7331 Lindbergh Blvd

32.0 km PM2.5: 5.2 µg/m³

What cities are near Williamstown?

23 Sicklerville 23 Glassboro 23 Jackson 22 Lindenwold 22 Sewell 31 Vineland 31 South Vineland 22 Cherry Hill 31 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 2026-10-21T00:31 UTC.