Today | Weather | Thursday, December 4, 2025

Weather in Gresham, Oregon

01:29 AM
Now
Cloudy Weather
37° F
Feels Like 39°
Precipitation 22 %
Wind 2 mph
Humidity 86 %
Today
Rainy Weather
Day 46°
Night 45°
Precipitation 91 %
Wind 5 mph
UV Index (0 - 11+) 0

Gresham Weather Forecast Updated

41 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 4, 2024)
Cloudy Night

Day

41°

Night

37°

Wind

12 mph

Precipitation

4 %

Air Quality in Gresham

NOW
31 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 7.44 µg/m³
PM10 9.14 µg/m³
O3 0.004 ppm
NO2 10 ppb
SO2 0.2 ppb
CO 0.26 ppm
NH3 0.3 µg/m³
NO 0.09 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.44 µg/m³
PM109.14 µg/m³
O38.81 µg/m³
NO218.79 µg/m³
SO20.4 µg/m³
CO294.92 µg/m³
NH30.3 µg/m³
NO0.09 µg/m³