Hourly Weather | Today Tuesday, January 13, 2026
Gresham, Oregon
3 PM
Cloudy Weather
48°
Feels Like 48°
0
Humidity: 87%
Wind: 6 mph
UV Index: 1
4 PM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 92%
Wind: 6 mph
UV Index: 0
5 PM
Cloudy Night
45°
Feels Like 43°
0
Humidity: 94%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
43°
Feels Like 41°
0
Humidity: 96%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
43°
Feels Like 39°
0
Humidity: 87%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
43°
Feels Like 39°
0
Humidity: 85%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
43°
Feels Like 39°
0
Humidity: 84%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
41°
Feels Like 37°
0
Humidity: 85%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 86%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.72 µg/m³
  • PM10: 11.9 µg/m³
  • O3: 0.015 ppm
  • NO2: 3.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

4 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.2 µg/m³
  • PM10: 11.49 µg/m³
  • O3: 0.011 ppm
  • NO2: 4.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.23 µg/m³
  • PM10: 11.63 µg/m³
  • O3: 0.008 ppm
  • NO2: 6.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.86 µg/m³
  • PM10: 12.41 µg/m³
  • O3: 0.006 ppm
  • NO2: 8.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.97 µg/m³
  • PM10: 13.72 µg/m³
  • O3: 0.006 ppm
  • NO2: 9 ppb
  • SO2: 0.1 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.8 µg/m³
  • PM10: 14.35 µg/m³
  • O3: 0.005 ppm
  • NO2: 9.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

9 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.24 µg/m³
  • PM10: 14.52 µg/m³
  • O3: 0.004 ppm
  • NO2: 9.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.31 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.47 µg/m³
  • PM10: 14.43 µg/m³
  • O3: 0.003 ppm
  • NO2: 9.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.31 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 12.23 µg/m³
  • PM10: 13.94 µg/m³
  • O3: 0.003 ppm
  • NO2: 9.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.31 ppm

Health Recommendations:

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