Hourly Weather | Today Saturday, September 6, 2025
Portland, Oregon
8 PM
Cloudy Night
70°
Feels Like 68°
5
Humidity: 84%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
70°
Feels Like 66°
5
Humidity: 81%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
68°
Feels Like 66°
5
Humidity: 82%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
66°
Feels Like 66°
5
Humidity: 83%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

8 PM
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 20.41 µg/m³
  • PM10: 25.92 µg/m³
  • O₃: 25.18 ppb
  • NO₂: 13.11 ppb
  • SO₂: 0.52 ppb
  • CO: 252.33 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 21.91 µg/m³
  • PM10: 26.79 µg/m³
  • O₃: 22.54 ppb
  • NO₂: 13.51 ppb
  • SO₂: 0.54 ppb
  • CO: 257.47 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 23.74 µg/m³
  • PM10: 25.45 µg/m³
  • O₃: 21.46 ppb
  • NO₂: 15.39 ppb
  • SO₂: 0.65 ppb
  • CO: 285.37 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 22.23 µg/m³
  • PM10: 23.80 µg/m³
  • O₃: 17.42 ppb
  • NO₂: 15.44 ppb
  • SO₂: 0.65 ppb
  • CO: 284.63 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.