Today | Weather | Thursday, February 26, 2026

Weather in Portland, Oregon

12:38 AM
Now
Cloudy Night
37° F
Feels Like 37°
Precipitation 0 %
Wind 4 mph
Humidity 96 %
Today
Cloudy Weather
Day 55°
Night 30°
Precipitation 1 %
Wind 4 mph
UV Index (0 - 11+) 3
Overnight Frost 7 AM – 7 AM
Tomorrow Morning Frost 7 AM – 7 AM

Portland Weather Forecast Updated

10 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 26, 2025)
Partly Sunny with Showers

Day

61°

Night

39°

Wind

8 mph

UV Index

3

Precipitation

49 %

Air Quality in Portland

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.95 µg/m³
PM10 5.02 µg/m³
O3 0.025 ppm
NO2 3.3 ppb
SO2 0.1 ppb
CO 0.17 ppm
NH3 1.05 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)
PM2.52.95 µg/m³
PM105.02 µg/m³
O348.34 µg/m³
NO26.16 µg/m³
SO20.34 µg/m³
CO194.04 µg/m³
NH31.05 µg/m³
NO0 µg/m³