Hourly Weather | Today › Thursday, October 8, 2026
Gresham, Oregon
7 AM
Cloudy Night
50°
Feels Like 50°
0
Humidity: 92%
UV Index: 0
Wind: 4 mph
8 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 85%
UV Index: 0
Wind: 4 mph
9 AM
Cloudy Weather
55°
Feels Like 59°
0
Humidity: 77%
UV Index: 1
Wind: 4 mph
10 AM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 70%
UV Index: 2
Wind: 5 mph
11 AM
Cloudy Weather
63°
Feels Like 68°
0
Humidity: 65%
UV Index: 3
Wind: 5 mph
12 PM
Cloudy Weather
66°
Feels Like 72°
0
Humidity: 57%
UV Index: 3
Wind: 6 mph
1 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 50%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 47%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 43%
UV Index: 3
Wind: 6 mph
4 PM
Cloudy Weather
79°
Feels Like 79°
0
Humidity: 41%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 44%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Weather
73°
Feels Like 72°
0
Humidity: 47%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 55%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 62%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 69%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
59°
Feels Like 59°
0
Humidity: 80%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.51 µg/m³
  • PM10: 15.54 µg/m³
  • O3: 0.014 ppm
  • NO2: 3.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.71 µg/m³
  • PM10: 15.86 µg/m³
  • O3: 0.012 ppm
  • NO2: 4.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

9 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.55 µg/m³
  • PM10: 15.74 µg/m³
  • O3: 0.010 ppm
  • NO2: 4.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

10 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.33 µg/m³
  • PM10: 15.56 µg/m³
  • O3: 0.012 ppm
  • NO2: 3.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

11 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.37 µg/m³
  • PM10: 15.63 µg/m³
  • O3: 0.016 ppm
  • NO2: 3 ppb
  • SO2: 0.3 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.31 µg/m³
  • PM10: 14.16 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.64 µg/m³
  • PM10: 13.23 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

2 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.42 µg/m³
  • PM10: 12.88 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

3 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.11 µg/m³
  • PM10: 12.54 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

4 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.74 µg/m³
  • PM10: 12.19 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

5 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.64 µg/m³
  • PM10: 12.15 µg/m³
  • O3: 0.055 ppm
  • NO2: 1 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.17 µg/m³
  • PM10: 12.79 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.94 µg/m³
  • PM10: 13.73 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.26 µg/m³
  • PM10: 14.23 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.91 µg/m³
  • PM10: 14.02 µg/m³
  • O3: 0.033 ppm
  • NO2: 3 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.59 µg/m³
  • PM10: 13.85 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.08 µg/m³
  • PM10: 13.43 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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