Hourly Weather | Today Thursday, October 16, 2025
Gresham, Oregon
1 PM
Cloudy Weather
57°
Feels Like 63°
0
Humidity: 60%
Wind: 6 mph
UV Index: 31
2 PM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 57%
Wind: 6 mph
UV Index: 29
3 PM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 54%
Wind: 6 mph
UV Index: 24
4 PM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 50%
Wind: 6 mph
UV Index: 18
5 PM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 54%
Wind: 5 mph
UV Index: 8
6 PM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 57%
Wind: 5 mph
UV Index: 2
7 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 63%
Wind: 5 mph
UV Index: 0
8 PM
Cloudy Weather
57°
Feels Like 57°
5
Humidity: 64%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Weather
55°
Feels Like 55°
5
Humidity: 70%
Wind: 4 mph
UV Index: 0
10 PM
Cloudy Weather
54°
Feels Like 54°
6
Humidity: 76%
Wind: 4 mph
UV Index: 0
11 PM
Cloudy Weather
52°
Feels Like 52°
7
Humidity: 82%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.28 µg/m³
  • PM10: 6.78 µg/m³
  • O3: 0.038 ppm
  • NO2: 1 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.52 µg/m³
  • PM10: 6.89 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 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: 5.97 µg/m³
  • PM10: 7.19 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 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: 5.99 µg/m³
  • PM10: 7.13 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.8 µg/m³
  • PM10: 6.92 µg/m³
  • O3: 0.043 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.79 µg/m³
  • PM10: 6.97 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6 µg/m³
  • PM10: 7.33 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.22 µg/m³
  • PM10: 7.75 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.4 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
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.33 µg/m³
  • PM10: 8.02 µg/m³
  • O3: 0.021 ppm
  • NO2: 3.6 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
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 8.32 µg/m³
  • O3: 0.018 ppm
  • NO2: 3.6 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
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.61 µg/m³
  • PM10: 8.57 µg/m³
  • O3: 0.015 ppm
  • NO2: 3.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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