Today | Weather | Saturday, August 8, 2026

Weather in Portland, Oregon

11:56 PM
Today
Cloudy Night
Day 91°
Night 57°
Precipitation 1 %
Wind 6 mph

Portland Weather Forecast Updated

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

Day

79°

Night

57°

Wind

6 mph

Precipitation

4 %

Air Quality in Portland

NOW
19 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.05 µg/m³
PM10 6.9 µg/m³
O3 0.021 ppm
NO2 1 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0.41 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.53.05 µg/m³
PM106.9 µg/m³
O340.25 µg/m³
NO21.9 µg/m³
SO20.26 µg/m³
CO79.79 µg/m³
NH30.41 µg/m³
NO0 µg/m³