Today | Weather | Wednesday, April 1, 2026

Weather in Portland, Oregon

06:04 AM
Now
Rainy Weather
45° F
Feels Like 36°
Precipitation 65 %
Wind 9 mph
Humidity 89 %
Today
Rainy Weather
Day 54°
Night 43°
Precipitation 91 %
Wind 13 mph
UV Index (0 - 11+) 1

Portland Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 1, 2025)
Rainy Weather

Day

57°

Night

41°

Wind

6 mph

UV Index

3

Precipitation

80 %

Air Quality in Portland

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.72 µg/m³
PM10 0.82 µg/m³
O3 0.047 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.07 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)
PM2.50.72 µg/m³
PM100.82 µg/m³
O392.35 µg/m³
NO20.44 µg/m³
SO20.15 µg/m³
CO126.76 µg/m³
NH30.07 µg/m³
NO0 µg/m³