NE Grant St Collocation Air Quality
Monitoring Station
· Hillsboro, United States
81
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
67
7pm
81
53
53
10pm
53
53
53
1am
53
53
53
4am
53
60
60
7am
60
—
—
10am
—
—
—
1pm
—
—
—
4pm
—
—
Station readings
67
81
CAMS model
adj +26
34
27
27
27
27
27
27
27
27
27
27
34
34
34
Air Quality Forecast (24h)
PM2.526.4 µg/m³
×1.8 WHO
Moderate
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T22:04 UTC.