Today | Weather | Tuesday, March 17, 2026

Weather in Gresham, Oregon

07:10 PM
Now
Cloudy Weather
64° F
Feels Like 63°
Precipitation 49 %
Wind 5 mph
UV Index (0 - 11+) 0
Humidity 55 %
Today
Rainy Weather
Day 66°
Night 45°
Precipitation 55 %
Wind 6 mph

Gresham Weather Forecast Updated

2 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 17, 2025)
Rainy Weather

Day

52°

Night

39°

Wind

4 mph

UV Index

2

Precipitation

90 %

Air Quality in Gresham

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.35 µg/m³
PM10 3.46 µg/m³
O3 0.026 ppm
NO2 2.5 ppb
SO2 0.1 ppb
CO 0.14 ppm
NH3 1.22 µg/m³
NO 0.24 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)
PM2.52.35 µg/m³
PM103.46 µg/m³
O350.98 µg/m³
NO24.77 µg/m³
SO20.34 µg/m³
CO155.04 µg/m³
NH31.22 µg/m³
NO0.24 µg/m³