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Hourly Weather | Today | Saturday, August 9, 2025
Portland, Oregon
3 AM
Cloudy NightCloudy night, overcast skies at night with no rain.
61°
Feels Like 59°
0
Humidity: 74%
Wind: 5 mph
UV Index: 0
4 AM
Cloudy NightCloudy night, overcast skies at night with no rain.
59°
Feels Like 59°
0
Humidity: 76%
Wind: 5 mph
UV Index: 0
5 AM
Cloudy NightCloudy night, overcast skies at night with no rain.
57°
Feels Like 57°
0
Humidity: 77%
Wind: 5 mph
UV Index: 0
6 AM
Cloudy NightCloudy night, overcast skies at night with no rain.
57°
Feels Like 57°
0
Humidity: 79%
Wind: 4 mph
UV Index: 0
7 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
59°
Feels Like 61°
0
Humidity: 77%
Wind: 4 mph
UV Index: 1
8 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
61°
Feels Like 64°
0
Humidity: 78%
Wind: 4 mph
UV Index: 2
9 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
63°
Feels Like 70°
0
Humidity: 69%
Wind: 5 mph
UV Index: 3
10 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
66°
Feels Like 72°
0
Humidity: 63%
Wind: 5 mph
UV Index: 4
11 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
70°
Feels Like 77°
0
Humidity: 57%
Wind: 5 mph
UV Index: 5
12 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
73°
Feels Like 82°
0
Humidity: 51%
Wind: 6 mph
UV Index: 7
1 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
77°
Feels Like 84°
0
Humidity: 45%
Wind: 7 mph
UV Index: 8
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
81°
Feels Like 86°
0
Humidity: 41%
Wind: 7 mph
UV Index: 7
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 86°
0
Humidity: 39%
Wind: 8 mph
UV Index: 5
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
84°
Feels Like 86°
0
Humidity: 37%
Wind: 8 mph
UV Index: 4
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
86°
Feels Like 86°
0
Humidity: 36%
Wind: 9 mph
UV Index: 3
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
84°
Feels Like 82°
0
Humidity: 38%
Wind: 8 mph
UV Index: 2
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 81°
0
Humidity: 42%
Wind: 8 mph
UV Index: 1
8 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 77°
0
Humidity: 46%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
77°
Feels Like 73°
0
Humidity: 52%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
73°
Feels Like 72°
0
Humidity: 57%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
72°
Feels Like 70°
0
Humidity: 62%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.43 µg/m³
  • PM10: 7.74 µg/m³
  • O₃: 17.38 ppb
  • NO₂: 7.61 ppb
  • SO₂: 0.42 ppb
  • CO: 142.83 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.15 µg/m³
  • PM10: 6.62 µg/m³
  • O₃: 13.19 ppb
  • NO₂: 6.73 ppb
  • SO₂: 0.52 ppb
  • CO: 146.21 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.44 µg/m³
  • PM10: 6.97 µg/m³
  • O₃: 12.84 ppb
  • NO₂: 6.55 ppb
  • SO₂: 0.54 ppb
  • CO: 143.91 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

6 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.77 µg/m³
  • PM10: 7.36 µg/m³
  • O₃: 14.00 ppb
  • NO₂: 5.80 ppb
  • SO₂: 0.58 ppb
  • CO: 142.39 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

7 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.44 µg/m³
  • PM10: 8.06 µg/m³
  • O₃: 15.15 ppb
  • NO₂: 5.06 ppb
  • SO₂: 0.63 ppb
  • CO: 140.87 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.72 µg/m³
  • PM10: 7.50 µg/m³
  • O₃: 16.31 ppb
  • NO₂: 4.31 ppb
  • SO₂: 0.68 ppb
  • CO: 139.35 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

9 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 7.66 µg/m³
  • O₃: 20.32 ppb
  • NO₂: 3.67 ppb
  • SO₂: 0.68 ppb
  • CO: 133.86 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

10 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.31 µg/m³
  • PM10: 7.72 µg/m³
  • O₃: 24.32 ppb
  • NO₂: 3.03 ppb
  • SO₂: 0.68 ppb
  • CO: 128.37 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

11 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.03 µg/m³
  • PM10: 7.05 µg/m³
  • O₃: 28.33 ppb
  • NO₂: 2.39 ppb
  • SO₂: 0.68 ppb
  • CO: 122.88 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

12 PM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.04 µg/m³
  • PM10: 6.74 µg/m³
  • O₃: 34.06 ppb
  • NO₂: 1.96 ppb
  • SO₂: 0.64 ppb
  • CO: 121.25 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

1 PM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.15 µg/m³
  • PM10: 6.76 µg/m³
  • O₃: 39.78 ppb
  • NO₂: 1.53 ppb
  • SO₂: 0.60 ppb
  • CO: 119.62 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

2 PM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.22 µg/m³
  • PM10: 6.78 µg/m³
  • O₃: 45.51 ppb
  • NO₂: 1.10 ppb
  • SO₂: 0.56 ppb
  • CO: 117.99 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

3 PM
38 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.30 µg/m³
  • PM10: 6.85 µg/m³
  • O₃: 46.70 ppb
  • NO₂: 1.13 ppb
  • SO₂: 0.56 ppb
  • CO: 118.35 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 PM
38 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.42 µg/m³
  • PM10: 6.95 µg/m³
  • O₃: 47.90 ppb
  • NO₂: 1.17 ppb
  • SO₂: 0.57 ppb
  • CO: 118.70 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 PM
37 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.63 µg/m³
  • PM10: 7.14 µg/m³
  • O₃: 49.10 ppb
  • NO₂: 1.20 ppb
  • SO₂: 0.57 ppb
  • CO: 119.06 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

6 PM
39 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.90 µg/m³
  • PM10: 7.42 µg/m³
  • O₃: 47.08 ppb
  • NO₂: 2.01 ppb
  • SO₂: 0.57 ppb
  • CO: 124.86 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

7 PM
41 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 7.12 µg/m³
  • PM10: 7.56 µg/m³
  • O₃: 45.06 ppb
  • NO₂: 2.81 ppb
  • SO₂: 0.58 ppb
  • CO: 130.67 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 PM
42 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 7.37 µg/m³
  • PM10: 7.73 µg/m³
  • O₃: 43.03 ppb
  • NO₂: 3.62 ppb
  • SO₂: 0.58 ppb
  • CO: 136.47 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors