Today | Weather | Thursday, February 5, 2026

Weather in Portland, Oregon

05:36 PM
Now
Night
52° F
Feels Like 46°
Precipitation 0 %
Wind 9 mph
Humidity 67 %
Today
Cloudy Weather
Day 55°
Night 36°
Precipitation 1 %
Wind 9 mph
UV Index (0 - 11+) 2

Portland Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Snowy Weather

Day

43°

Night

32°

Wind

9 mph

UV Index

1

Precipitation

69 %

Air Quality in Portland

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

Pollutant Concentrations:

PM2.5 5.01 µg/m³
PM10 6.92 µg/m³
O3 0.012 ppm
NO2 4.8 ppb
SO2 0.1 ppb
CO 0.20 ppm
NH3 0.6 µg/m³
NO 0.06 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)
PM2.55.01 µg/m³
PM106.92 µg/m³
O322.74 µg/m³
NO28.97 µg/m³
SO20.35 µg/m³
CO232.12 µg/m³
NH30.6 µg/m³
NO0.06 µg/m³