Hermiston, Oregon, USA Air Quality

Monitoring Station · Hermiston, United States
64
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
56 2am
64
76
88 5am
88
105
105 8am
105
105
105 11am
88
76
76 2pm
56
56
— 5pm
—
—
— 8pm
—
—
— 11pm
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Station readings
64
CAMS model adj +22
34
54
54
66
66
83
83
83
83
83
66
54
54
34
34

Air Quality Forecast (24h)

PM2.518.3 µg/m³ ×1.2 WHO
Moderate
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Nearby Cities

54 Hermiston 54 Pendleton 79 Kennewick 82 Tri-Cities 76 Pasco 79 Richland 103 Walla Walla 84 Sunnyside 81 Yakima

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T05:42 UTC.