What is the air quality in Williamsport today?

The current Air Quality Index (AQI) in Williamsport is 41 (Good). PM2.5 concentration is 9.75 µg/m³.

What is the temperature in Williamsport right now?

The current temperature in Williamsport is 8.6°C (feels like 4.8°C). Humidity is 95.1% and wind speed is 29.7 km/h.

Is it safe to go outside in Williamsport?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Williamsport, United States

Drizzle

8.6°C · 95.1% humidity

8.6°

Feels 4.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

25 10pm

41 1am

31 4am

27 7am

26 10am

25 1pm

25 4pm

27 7pm

Air Quality Index Trend

41h · 1 stn

View full history →

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

95.1%

Humidity

29.7 km/h

Wind W

1002.8 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.75 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Williamsport?

Temperature & Precipitation

PM2.5 Trend

41h · 1 station

PM2.59.75 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX0.7

Low

Both models agree Avg diff: 5.5°C

Where are air quality stations near Williamsport?

Montoursville, Pennsylvania, USA

6.5 km PM2.5: 3.1 µg/m³

What cities are near Williamsport?

33 Back Mountain 35 State College 33 Hazleton 33 Wilkes-Barre 25 Elmira 26 Harrisburg 34 Scranton 26 Carlisle 48 Vestal 48 Binghamton

Get AQI alerts for Williamsport

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T05:46 UTC.