Air Quality in Gresham, United States

Drizzle
10.3°C · 84.5% humidity
10.3°
Feels 10.3°
9
Good
Air quality is satisfactory. Enjoy outdoor activities.
12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
6 5pm
5
5
9 8pm
6
6
6 11pm
6
6
6 2am
6
6
6 5am
6
6
6 8am
6
6
6 11am
6
—
— 2pm
—
—
Station readings 29h ago
AQI 5
PM2.5 1.3 µg/m³ · 29h ago
AD 728×90

Air Quality Index Trend

48h · 5 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.

84.5%
Humidity
21.1 km/h
Wind SSW
1022.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
9
2.14 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Gresham?

Temperature & Precipitation

PM2.5 Trend

48h · 5 stations
PM2.52.14 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (12 stations within 25 km)
2.14
Median
2.59
Average
1.57
Low
7.2
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +3.7

What is the 7-day forecast for Gresham?

06-09
19.9° 10.1°
1.94 mm
06-10
24.1° 13.5°
06-11
25.3° 9.5°
06-12
33.7° 9.3°
0.06 mm
06-13
37.3° 7.8°
06-14
29.2° 12.5°
4.0 mm
06-15
24.0° 8.3°
2.12 mm
Both models agree Avg diff: 5.6°C

Where are air quality stations near Gresham?

8
Gresham Centennial High School
4.1 km PM2.5: 2.0 µg/m³
8
Portland McDaniel High School
12.5 km PM2.5: 2.0 µg/m³
7
Portland Cully Helensview, Oregon, USA
13.3 km PM2.5: 1.7 µg/m³
17
Portland, Oregon, USA
13.4 km PM2.5: 4.1 µg/m³
12
Portland, Oregon, USA
13.4 km PM2.5: 2.9 µg/m³
9
Portland Lane Middle School
13.6 km PM2.5: 2.1 µg/m³
21
Portland Postal Bldg., Oregon, USA
13.6 km PM2.5: 5.0 µg/m³
7
Portland Postal Bldg., Oregon, USA
13.6 km PM2.5: 1.7 µg/m³
6
Vancouver-Blairmont Dr
14.4 km PM2.5: 1.4 µg/m³
9
Portland Benson High School
17.4 km PM2.5: 2.1 µg/m³

What cities are near Gresham?

10 Troutdale 10 Happy Valley 10 Camas 9 Lents 10 Washougal 10 Milwaukie 10 Oak Grove 11 West Linn 11 Lake Oswego 11 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 2026-06-09T03:12 UTC.