Hourly Weather | Today Thursday, December 4, 2025
Gresham, Oregon
3 AM
Cloudy Weather
37°
Feels Like 37°
27
Humidity: 99%
Wind: 4 mph
UV Index: 0
4 AM
Cloudy Weather
37°
Feels Like 37°
49
Humidity: 97%
Wind: 5 mph
UV Index: 0
5 AM
Rainy Weather
39°
Feels Like 37°
51
Humidity: 95%
Wind: 5 mph
UV Index: 0
6 AM
Rainy Weather
39°
Feels Like 36°
51
Humidity: 96%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Weather
39°
Feels Like 39°
49
Humidity: 92%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
39°
Feels Like 39°
49
Humidity: 93%
Wind: 5 mph
UV Index: 0
9 AM
Rainy Weather
39°
Feels Like 37°
56
Humidity: 94%
Wind: 5 mph
UV Index: 0
10 AM
Rainy Weather
41°
Feels Like 39°
70
Humidity: 93%
Wind: 5 mph
UV Index: 0
11 AM
Rainy Weather
43°
Feels Like 37°
70
Humidity: 93%
Wind: 5 mph
UV Index: 0
12 PM
Rainy Weather
43°
Feels Like 37°
70
Humidity: 92%
Wind: 6 mph
UV Index: 0
1 PM
Cloudy Weather
43°
Feels Like 41°
49
Humidity: 92%
Wind: 6 mph
UV Index: 0
2 PM
Cloudy Weather
45°
Feels Like 43°
49
Humidity: 91%
Wind: 6 mph
UV Index: 0
3 PM
Rainy Weather
45°
Feels Like 39°
56
Humidity: 89%
Wind: 6 mph
UV Index: 0
4 PM
Rainy Weather
45°
Feels Like 39°
70
Humidity: 91%
Wind: 5 mph
UV Index: 0
5 PM
Rainy Weather
45°
Feels Like 41°
70
Humidity: 90%
Wind: 5 mph
UV Index: 0
6 PM
Rainy Weather
45°
Feels Like 41°
70
Humidity: 91%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Weather
45°
Feels Like 45°
49
Humidity: 94%
Wind: 5 mph
UV Index: 0
8 PM
Cloudy Weather
46°
Feels Like 45°
49
Humidity: 91%
Wind: 5 mph
UV Index: 0
9 PM
Rainy Weather
46°
Feels Like 43°
56
Humidity: 87%
Wind: 5 mph
UV Index: 0
10 PM
Rainy Weather
46°
Feels Like 43°
70
Humidity: 90%
Wind: 5 mph
UV Index: 0
11 PM
Rainy Weather
46°
Feels Like 43°
70
Humidity: 90%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 9.09 µg/m³
  • O3: 0.005 ppm
  • NO2: 9.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

4 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.47 µg/m³
  • PM10: 9.02 µg/m³
  • O3: 0.005 ppm
  • NO2: 8.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

5 AM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 8.68 µg/m³
  • O3: 0.005 ppm
  • NO2: 8.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

6 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.75 µg/m³
  • PM10: 7.97 µg/m³
  • O3: 0.005 ppm
  • NO2: 7.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

7 AM
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.21 µg/m³
  • PM10: 7.26 µg/m³
  • O3: 0.005 ppm
  • NO2: 7.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

8 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.63 µg/m³
  • PM10: 6.64 µg/m³
  • O3: 0.005 ppm
  • NO2: 7.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

9 AM
20 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.78 µg/m³
  • PM10: 5.81 µg/m³
  • O3: 0.006 ppm
  • NO2: 7.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

10 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.38 µg/m³
  • PM10: 5.39 µg/m³
  • O3: 0.007 ppm
  • NO2: 7.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

11 AM
16 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.95 µg/m³
  • PM10: 4.82 µg/m³
  • O3: 0.014 ppm
  • NO2: 6 ppb
  • SO2: 0.2 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.41 µg/m³
  • PM10: 4.16 µg/m³
  • O3: 0.018 ppm
  • NO2: 5.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.92 µg/m³
  • PM10: 2.34 µg/m³
  • O3: 0.030 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 1.92 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 1.68 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.28 µg/m³
  • PM10: 1.57 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.28 µg/m³
  • PM10: 1.57 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.34 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.4 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
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 1.81 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.4 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
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 1.99 µg/m³
  • O3: 0.023 ppm
  • NO2: 2.4 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
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.66 µg/m³
  • PM10: 2.16 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.4 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
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 2.31 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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