Air Quality in Hillsboro, United States

Clear
23.9°C · 42.1% humidity
23.9°
Feels 23.9°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast
34 5am
54
54
19 8am
29
36
21 11am
18
20
20 2pm
22
23
23 5pm
24
26
26 8pm
34
34
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

45h · 25 stn

Hillsboro'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
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.61 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Hillsboro?

Temperature & Precipitation

PM2.5 Trend

45h · 25 stations
PM2.54.61 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (7 stations within 25 km)
4.61
Median
5.09
Average
2.8
Low
8.2
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +5.1

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?

10
Hillsboro Hare Field, Oregon, USA
1.5 km PM2.5: 2.4 µg/m³
18
Hillsboro, Oregon, USA
1.5 km PM2.5: 4.3 µg/m³
20
NE Grant St Collocation
1.5 km PM2.5: 4.9 µg/m³
15
Forest Grove Pacific University
9.0 km PM2.5: 3.7 µg/m³
26
Beaverton, Oregon, USA
14.8 km PM2.5: 6.2 µg/m³
28
Beaverton, Oregon, USA
14.8 km PM2.5: 6.7 µg/m³
12
Portland Roosevelt High School
21.0 km PM2.5: 2.8 µg/m³
23
Portland Lincoln High School
23.5 km PM2.5: 5.5 µg/m³
26
Tualatin I-5 Roadway, Oregon, USA
23.5 km PM2.5: 6.2 µg/m³
34
Tualatin I-5 Roadway, Oregon, USA
23.5 km PM2.5: 8.2 µg/m³

What cities are near Hillsboro?

15 Forest Grove 24 Aloha 21 Bethany 25 Beaverton 28 Tigard 26 Sherwood 32 Tualatin 20 Newberg 24 Lake Oswego 27 Vancouver
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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 2026-09-05T15:53 UTC.