1. North America
  2. United States
  3. Pennsylvania
  4. Dauphin County
  5. Williamstown

Williamstown

Dauphin County, Pennsylvania

2026-05-12 21:00
AQI (US)
Good
Pollutants
O3
μg/m³
98.6
PM2.5
μg/m³
6.7
PM10
μg/m³
22.5
Weather
  • ℃
  • ℉
19℃
42%
2 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Williamstown
AQI 43
Tower City
AQI 44
Reinerton
AQI 44
Lykens
AQI 41
Orwin
AQI 33
Gratz
AQI 41
Valley View
AQI 42
Fort Indiantown Gap
AQI 39
Berrysburg
AQI 46
Elizabethville
AQI 44
Pillow
AQI 51