Today | Weather | Friday, April 3, 2026

Weather in Portland, Oregon

08:58 PM
Now
Cloudy Night
55° F
Feels Like 54°
Precipitation 0 %
Wind 6 mph
Humidity 52 %
Today
Night
Day 61°
Night 39°
Precipitation 1 %
Wind 6 mph

Portland Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 3, 2025)
Cloudy Weather

Day

57°

Night

37°

Wind

4 mph

UV Index

3

Precipitation

25 %

Air Quality in Portland

NOW
25 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3 µg/m³
PM10 4.58 µg/m³
O3 0.027 ppm
NO2 2.2 ppb
SO2 0.1 ppb
CO 0.14 ppm
NH3 0.57 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 µg/m³
PM104.58 µg/m³
O353.33 µg/m³
NO24.1 µg/m³
SO20.24 µg/m³
CO165.66 µg/m³
NH30.57 µg/m³
NO0 µg/m³