Today | Weather | Thursday, October 8, 2026

Weather in Gresham, Oregon

05:47 AM
Now
Cloudy Night
50° F
Feels Like 50°
Precipitation 0 %
Wind 4 mph
Humidity 89 %
Today
Cloudy Weather
Day 79°
Night 54°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Gresham Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 8, 2025)
Cloudy Weather

Day

61°

Night

48°

Wind

5 mph

Precipitation

49 %

Air Quality in Gresham

NOW
53 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 13.34 µg/m³
PM10 15.33 µg/m³
O3 0.016 ppm
NO2 2.8 ppb
SO2 0.1 ppb
CO 0.16 ppm
NH3 0.37 µg/m³
NO 0 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 13.34 µg/m³
PM10 – 15.33 µg/m³
O3 – 31.48 µg/m³
NO2 – 5.34 µg/m³
SO2 – 0.34 µg/m³
CO – 179.38 µg/m³
NH3 – 0.37 µg/m³
NO – 0 µg/m³