Air Quality in Williamsport, United States
Windy
19.0°C · 78.4% humidity
19.0°
Feels 19.0°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Williamsport's air quality — share it
AQI Forecast
24
1pm
24
24
25
4pm
25
25
25
7pm
25
25
25
10pm
25
25
25
1am
25
25
25
4am
25
25
25
7am
25
24
24
10am
24
24
Air Quality Index Trend
32h · 1 stnWilliamsport's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
78.4%
Humidity
42.0 km/h
Wind SSE
1017.9 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Williamsport?
Temperature & Precipitation
PM2.5 Trend
32h · 1 stationPM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
What is the 7-day forecast for Williamsport?
05-29
19.0° 5.8°
0.06 mm
05-30
21.0° 10.8°
19.56 mm
05-31
28.5° 8.4°
06-01
28.2° 12.3°
0.56 mm
06-02
20.3° 7.3°
0.56 mm
06-03
25.2° 19.1°
2.94 mm
06-04
21.9° 18.3°
Both models agree
Avg diff: 4.5°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T20:11 UTC.