What is the air quality in Gresham today?

The current Air Quality Index (AQI) in Gresham is 17 (Good). PM2.5 concentration is 4.06 µg/m³.

What is the temperature in Gresham right now?

The current temperature in Gresham is 30.7°C (feels like 30.7°C). Humidity is 28.2% and wind speed is 53.9 km/h.

Is it safe to go outside in Gresham?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 12.9 (Extreme).

Air Quality in Gresham, United States

Drizzle

30.7°C · 28.2% humidity

30.7°

Feels 30.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

11 stations

Nearby Monitoring Stations

AQI Forecast

34 1pm

17 4pm

21 7pm

25 10pm

26 1am

25 4am

25 7am

27 10am

Air Quality Index Trend

47h · 5 stn

View full history →

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.

28.2%

Humidity

53.9 km/h

Wind SSW

1021.0 hPa

Pressure

12.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

4.06 µg/m³

PM10▲

20.55 µg/m³

050100150200300500

What is the weather forecast for Gresham?

Temperature & Precipitation

PM2.5 Trend

47h · 5 stations

PM2.54.06 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX12.9

Extreme

Station readings (11 stations within 25 km)

4.06

Median

4.66

Average

2.2

Low

9.4

High

PM2.5 µg/m³ · Model: 8.2 · Bias: +4.1

What is the 7-day forecast for Gresham?

05-28

23.9° 12.2°

2.0 mm

05-29

30.7° 10.7°

11.75 mm

05-30

19.7° 10.4°

1.06 mm

05-31

29.9° 10.8°

06-01

23.5° 5.4°

06-02

33.3° 7.6°

06-03

25.0° 6.6°

1.75 mm

Both models agree Avg diff: 3.8°C

Where are air quality stations near Gresham?

Gresham Centennial High School

4.1 km PM2.5: 3.4 µg/m³

Portland McDaniel High School

12.5 km PM2.5: 4.2 µg/m³

Portland Cully Helensview, Oregon, USA

13.3 km PM2.5: 4.6 µg/m³

Portland, Oregon, USA

13.4 km PM2.5: 7.7 µg/m³

Portland, Oregon, USA

13.4 km PM2.5: 8.9 µg/m³

Portland Lane Middle School

13.6 km PM2.5: 2.9 µg/m³

Portland Postal Bldg., Oregon, USA

13.6 km PM2.5: 8.9 µg/m³

Portland Postal Bldg., Oregon, USA

13.6 km PM2.5: 6.5 µg/m³

Vancouver-Blairmont Dr

14.4 km PM2.5: 3.7 µg/m³

Portland Benson High School

17.4 km PM2.5: 3.1 µg/m³

What cities are near Gresham?

19 Troutdale 22 Happy Valley 20 Camas 24 Lents 20 Washougal 23 Milwaukie 23 Oak Grove 23 West Linn 22 Lake Oswego 24 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 2026-05-28T23:08 UTC.