Hourly Weather | Today Tuesday, April 7, 2026
Portland, Oregon
1 PM
Cloudy Weather
57°
Feels Like 66°
0
Humidity: 50%
UV Index: 5
Wind: 5 mph
2 PM
Cloudy Weather
59°
Feels Like 68°
0
Humidity: 43%
UV Index: 5
Wind: 5 mph
3 PM
Cloudy Weather
63°
Feels Like 68°
0
Humidity: 39%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
64°
Feels Like 68°
0
Humidity: 36%
UV Index: 3
Wind: 6 mph
5 PM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 38%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
61°
Feels Like 63°
0
Humidity: 40%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
59°
Feels Like 57°
0
Humidity: 42%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 45%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 49%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 54%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
50°
Feels Like 46°
0
Humidity: 59%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.78 µg/m³
  • PM10: 4.57 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.74 µg/m³
  • PM10: 4.52 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.71 µg/m³
  • PM10: 4.51 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.73 µg/m³
  • PM10: 4.5 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.77 µg/m³
  • PM10: 4.57 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.93 µg/m³
  • PM10: 4.87 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.11 µg/m³
  • PM10: 5.28 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 5.61 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.26 µg/m³
  • PM10: 5.81 µg/m³
  • O3: 0.020 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 PM
16 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.34 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 6.13 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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