Air Quality in Hillsboro, United States

Drizzle
9.6°C · 99.1% humidity
9.6°
Feels 6.9°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast
25 4am
24
25
10 7am
16
19
21 10am
23
24
25 1pm
26
33
33 4pm
33
34
34 7pm
34
34
34 10pm
34
34
34 1am
34
54
AD 728×90

Air Quality Index Trend

48h · 4 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.

99.1%
Humidity
19.0 km/h
Wind S
1019.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
10
2.41 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Hillsboro?

Temperature & Precipitation

PM2.5 Trend

48h · 4 stations
PM2.52.41 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (7 stations within 25 km)
2.41
Median
2.32
Average
1.2
Low
3.8
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +3.5

What is the 7-day forecast for Hillsboro?

05-29
30.6° 9.6°
3.25 mm
05-30
14.4° 9.1°
0.56 mm
05-31
29.6° 11.4°
06-01
23.4° 5.1°
06-02
33.2° 7.2°
06-03
25.4° 6.5°
1.37 mm
06-04
22.7° 10.3°
Both models agree Avg diff: 3.9°C

Where are air quality stations near Hillsboro?

7
Hillsboro, Oregon, USA
1.5 km PM2.5: 1.7 µg/m³
13
NE Grant St Collocation
1.5 km PM2.5: 3.2 µg/m³
9
Forest Grove Pacific University
9.0 km PM2.5: 2.2 µg/m³
25
Beaverton, Oregon, USA
14.8 km PM2.5: 6.0 µg/m³
6
Portland Roosevelt High School
21.0 km PM2.5: 1.5 µg/m³
11
Portland Lincoln High School
23.5 km PM2.5: 2.7 µg/m³

What cities are near Hillsboro?

9 Forest Grove 8 Aloha 10 Bethany 7 Beaverton 12 Tigard 12 Sherwood 15 Tualatin 8 Newberg 13 Lake Oswego 2 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 2026-05-29T14:45 UTC.