Today's Weather Forecast - Portland
Today's weather in Portland. high 20°C (68°F), low 11°C (52°F). Overcast.
Today’s Hourly Weather Outlook
- Wind speed
- 7 km/h
- Rain probability
- 0%
- Wind speed
- 6 km/h
- Rain probability
- 0%
- Wind speed
- 7 km/h
- Rain probability
- 1%
- Wind speed
- 7 km/h
- Rain probability
- 0%
24-Hour Rain & Temperature Forecast
Sunrise & Sunset
Air Quality Index & Health Advice
Air Quality Index
- Air quality level
- Good
- Dominant pollutant
- Dominant: PM2.5
- Monitoring station
- Portland, Oregon, USA
- PM2.5
- 32μg/m³
- O₃
- 0.1ppb
- NO₂
- 10.2ppb
- CO
- 0.1ppm
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Portland is forecast to reach a high of 20°C today, with an overnight low around 11°C. That's 5° below the long-term average high of 25°C for this time of year. It continues a recent pattern — 4 of the last 28 days with published data have run cooler than normal. Expect little chance of rain (1% probability) and light winds averaging 7 km/h. Air quality is currently Moderate (AQI 52), driven mainly by PM2.5 at 8.6 μg/m³.
Today vs Normal
The long-term average high for today is 25°C.
4 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running below normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.