Hourly Weather | Today Tuesday, November 4, 2025
Portland, Oregon
7 AM
Cloudy Weather
45°
Feels Like 45°
25
Humidity: 100%
Wind: 6 mph
UV Index: 0
8 AM
Cloudy Weather
46°
Feels Like 45°
20
Humidity: 100%
Wind: 6 mph
UV Index: 0
9 AM
Cloudy Weather
48°
Feels Like 46°
20
Humidity: 99%
Wind: 6 mph
UV Index: 0
10 AM
Cloudy Weather
52°
Feels Like 48°
20
Humidity: 94%
Wind: 7 mph
UV Index: 1
11 AM
Cloudy Weather
54°
Feels Like 52°
20
Humidity: 88%
Wind: 8 mph
UV Index: 1
12 PM
Cloudy Weather
55°
Feels Like 52°
21
Humidity: 82%
Wind: 9 mph
UV Index: 1
1 PM
Cloudy Weather
57°
Feels Like 54°
22
Humidity: 76%
Wind: 10 mph
UV Index: 1
2 PM
Cloudy Weather
55°
Feels Like 52°
22
Humidity: 78%
Wind: 12 mph
UV Index: 1
3 PM
Cloudy Weather
55°
Feels Like 50°
27
Humidity: 80%
Wind: 12 mph
UV Index: 1
4 PM
Cloudy Weather
54°
Feels Like 48°
49
Humidity: 84%
Wind: 12 mph
UV Index: 0
5 PM
Rainy Weather
54°
Feels Like 45°
60
Humidity: 84%
Wind: 12 mph
UV Index: 0
6 PM
Rainy Weather
52°
Feels Like 43°
60
Humidity: 87%
Wind: 14 mph
UV Index: 0
7 PM
Cloudy Weather
52°
Feels Like 43°
49
Humidity: 89%
Wind: 15 mph
UV Index: 0
8 PM
Cloudy Weather
52°
Feels Like 43°
49
Humidity: 91%
Wind: 17 mph
UV Index: 0
9 PM
Rainy Weather
50°
Feels Like 37°
56
Humidity: 94%
Wind: 18 mph
UV Index: 0
10 PM
Rainy Weather
48°
Feels Like 36°
70
Humidity: 96%
Wind: 20 mph
UV Index: 0
11 PM
Rainy Weather
50°
Feels Like 37°
70
Humidity: 93%
Wind: 20 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
15 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 3.55 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

8 AM
12 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 3.68 µg/m³
  • O3: 0.013 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 AM
11 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.31 µg/m³
  • PM10: 3.79 µg/m³
  • O3: 0.012 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
14 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.21 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.015 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.93 µg/m³
  • PM10: 3.18 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

12 PM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.82 µg/m³
  • PM10: 2.89 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.71 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.55 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.48 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 2.58 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 2.76 µg/m³
  • O3: 0.021 ppm
  • NO2: 3 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 2.88 µg/m³
  • O3: 0.019 ppm
  • NO2: 3.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 2.68 µg/m³
  • O3: 0.018 ppm
  • NO2: 3.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 2.17 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.3 µg/m³
  • PM10: 1.55 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.4 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 1.02 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 0.61 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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