NE Grant St Collocation Air Quality
Monitoring Station
· Hillsboro, United States
95
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
81
8pm
95
62
62
11pm
62
62
62
2am
62
62
62
5am
69
69
69
8am
69
—
—
11am
—
—
—
2pm
—
—
—
5pm
—
—
Station readings
81
95
CAMS model
adj +35
27
27
27
27
27
27
27
27
27
27
34
34
34
34
Air Quality Forecast (24h)
PM2.532.9 µg/m³
×2.2 WHO
Moderate
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T23:00 UTC.