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

Williamstown

Dauphin County, Pennsylvania

2026-05-12 05:00
AQI (China)
Excellent
Pollutants
PM10
μg/m³
22.5
O3
μg/m³
57
PM2.5
μg/m³
5.9
Weather
  • ℃
  • ℉
5℃
87%
17 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • PM10
  • O3
  • PM2.5

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 23
Tower City
AQI 23
Reinerton
AQI 23
Lykens
AQI 23
Orwin
AQI 8
Gratz
AQI 23
Valley View
AQI 23
Fort Indiantown Gap
AQI 5
Berrysburg
AQI 22
Elizabethville
AQI 26
Pillow
AQI 22