Air Quality in Gresham, United States

Clear
26.6°C · 30.0% humidity
26.6°
Feels 26.6°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
11 11am
10
6
10 2pm
9
6
4 5pm
3
2
2 8pm
1
1
1 11pm
18
18
18 2am
18
18
18 5am
18
18
18 8am
18
18
Station readings
11
10
6
5
4
CAMS model adj -36
54
54
34
34
34
34
34
27
27
34
34
34
34
54
54
54
54
54
54
54
54
54
54
54

Air Quality Index Trend

48h · 2 stn

Gresham's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

30.0%
Humidity
33.6 km/h
Wind NW
1019.0 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

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

What is the weather forecast for Gresham?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.52.53 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (5 stations within 25 km)
2.53
Median
2.6
Average
1.05
Low
4.3
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +4.6

What is the 7-day forecast for Gresham?

09-22
23.1° 9.2°
09-23
26.6° 15.2°
09-24
24.4° 11.8°
2.19 mm
09-25
23.5° 7.5°
09-26
22.1° 14.5°
09-27
24.0° 9.3°
09-28
19.9° 12.6°
Both models agree Avg diff: 4.1°C

Where are air quality stations near Gresham?

19
Gresham Centennial High School
4.1 km PM2.5: 4.5 µg/m³
25
Portland McDaniel High School
12.5 km PM2.5: 6.1 µg/m³
12
Portland Cully Helensview, Oregon, USA
13.3 km PM2.5: 2.9 µg/m³
12
Portland, Oregon, USA
13.4 km PM2.5: 2.9 µg/m³
15
Portland Lane Middle School
13.6 km PM2.5: 3.7 µg/m³
24
Sensor Box 5, Oregon, USA
13.6 km PM2.5: 5.8 µg/m³
5
Vancouver-Blairmont Dr
14.4 km PM2.5: 1.1 µg/m³
21
Portland Benson High School
17.4 km PM2.5: 5.1 µg/m³
18
Gladstone High School
18.0 km PM2.5: 4.3 µg/m³
20
Portland Lincoln High School
20.1 km PM2.5: 4.7 µg/m³

What cities are near Gresham?

10 Troutdale 11 Happy Valley 10 Camas 12 Lents 10 Washougal 11 Milwaukie 10 Oak Grove 10 West Linn 11 Lake Oswego 10 Oregon City
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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 2026-09-22T21:50 UTC.