Air Quality in Williamsport, United States
Heavy Rain
21.0°C · 95.4% humidity
21.0°
Feels 21.0°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Williamsport's air quality — share it
AQI Forecast
24
2pm
24
25
25
5pm
25
25
25
8pm
25
25
25
11pm
25
25
25
2am
25
25
25
5am
25
25
25
8am
24
24
24
11am
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.
95.4%
Humidity
48.1 km/h
Wind WSW
1014.2 hPa
Pressure
5.9
UV High
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 INDEX5.9
High
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 2026-05-29T21:09 UTC.