Air Quality in Hillsboro, United States
Clear
23.9°C · 42.1% humidity
23.9°
Feels 23.9°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations
Nearby Monitoring Stations
AQI Forecast
54
7am
54
54
23
10am
12
11
16
1pm
17
19
21
4pm
22
23
25
7pm
26
33
33
10pm
54
54
54
1am
54
54
54
4am
54
54
Air Quality Index Trend
45h · 11 stnHillsboro's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
42.1%
Humidity
11.1 km/h
Wind NE
1017.4 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.64 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Hillsboro?
Temperature & Precipitation
PM2.5 Trend
45h · 11 stationsPM2.55.64 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
Station readings (7 stations within 25 km)
5.64
Median
6.87
Average
3.7
Low
12.1
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +4.1
What is the 7-day forecast for Hillsboro?
09-05
25.6° 11.3°
09-06
27.0° 14.9°
09-07
28.3° 8.5°
7.0 mm
09-08
27.4° 13.2°
09-09
29.6° 11.6°
09-10
35.0° 10.6°
09-11
27.1° 11.2°
Both models agree
Avg diff: 4.9°C
Where are air quality stations near Hillsboro?
23
Hillsboro, Oregon, USA
10
Hillsboro Hare Field, Oregon, USA
24
NE Grant St Collocation
30
Forest Grove Pacific University
35
Beaverton, Oregon, USA
15
Portland Roosevelt High School
23
Portland Lincoln High School
51
Tualatin I-5 Roadway, Oregon, USA
45
Tualatin I-5 Roadway, Oregon, USA
What cities are near Hillsboro?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T17:14 UTC.