Hourly Weather | Today Monday, July 20, 2026
Portland, Oregon
5 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 40%
UV Index: 3
Wind: 5 mph
6 PM
Cloudy Weather
84°
Feels Like 86°
0
Humidity: 38%
UV Index: 2
Wind: 5 mph
7 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 41%
UV Index: 1
Wind: 5 mph
8 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 46%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
81°
Feels Like 79°
0
Humidity: 50%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 56%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 61%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.12 µg/m³
  • PM10: 11.81 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.92 µg/m³
  • PM10: 12.73 µg/m³
  • O3: 0.045 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
47 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.21 µg/m³
  • PM10: 13.26 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.11 µg/m³
  • PM10: 13.42 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
45 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.82 µg/m³
  • PM10: 13.28 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.57 µg/m³
  • PM10: 13.1 µg/m³
  • O3: 0.023 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
43 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.21 µg/m³
  • PM10: 12.77 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.