Johnstown, Pennsylvania, USA Air Quality

Monitoring Station · Johnstown, United States
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
43 11pm
60
43
43 2am
43
42
42 5am
42
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42 8am
42
42
42 11am
43
42
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Station readings
43
60
CAMS model adj +18
25
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24

Air Quality Forecast (24h)

PM2.516.4 µg/m³ ×1.1 WHO
Moderate
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Nearby Cities

34 Johnstown 38 Altoona 25 Murrysville 23 Plum 46 Cumberland 23 Monroeville 24 McKeesport 24 West Mifflin 23 Penn Hills

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-22T02:58 UTC.