Hourly Weather | Today Wednesday, March 18, 2026
Oshkosh, Wisconsin
6 AM
Snowy Weather
19°
Feels Like
66
Frost Risk: 100%
Humidity: 91%
UV Index: 0
Wind: 10 mph
7 AM
Cloudy Weather
19°
Feels Like
49
Frost Risk: 100%
Humidity: 89%
UV Index: 0
Wind: 10 mph
8 AM
Snowy Weather
21°
Feels Like
51
Frost Risk: 98%
Humidity: 85%
UV Index: 0
Wind: 12 mph
9 AM
Cloudy Weather
21°
Feels Like 10°
44
Frost Risk: 100%
Humidity: 89%
UV Index: 0
Wind: 12 mph
10 AM
Cloudy Weather
25°
Feels Like 12°
34
Humidity: 88%
UV Index: 1
Wind: 12 mph
11 AM
Cloudy Weather
27°
Feels Like 16°
27
Humidity: 86%
UV Index: 1
Wind: 12 mph
12 PM
Cloudy Weather
28°
Feels Like 18°
27
Humidity: 83%
UV Index: 1
Wind: 12 mph
1 PM
Cloudy Weather
30°
Feels Like 21°
18
Humidity: 81%
UV Index: 1
Wind: 12 mph
2 PM
Cloudy Weather
30°
Feels Like 23°
0
Humidity: 75%
UV Index: 1
Wind: 10 mph
3 PM
Cloudy Weather
32°
Feels Like 27°
0
Humidity: 73%
UV Index: 1
Wind: 9 mph
4 PM
Cloudy Weather
34°
Feels Like 27°
0
Humidity: 72%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
34°
Feels Like 28°
0
Humidity: 73%
UV Index: 1
Wind: 8 mph
6 PM
Cloudy Weather
34°
Feels Like 28°
0
Humidity: 77%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Weather
34°
Feels Like 28°
0
Humidity: 80%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
34°
Feels Like 28°
44
Humidity: 83%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
30°
Feels Like 28°
48
Humidity: 92%
UV Index: 0
Wind: 6 mph
10 PM
Icy Road Conditions
32°
Feels Like 27°
52
Humidity: 88%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
32°
Feels Like 30°
21
Humidity: 88%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.89 µg/m³
  • PM10: 3.97 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.89 µg/m³
  • PM10: 3.98 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.14 µg/m³
  • PM10: 4.28 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.49 µg/m³
  • PM10: 4.7 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 AM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.58 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.93 µg/m³
  • PM10: 7.34 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.36 µg/m³
  • PM10: 9.81 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.4 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.95 µg/m³
  • PM10: 13.45 µg/m³
  • O3: 0.057 ppm
  • NO2: 1 ppb
  • SO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 16 µg/m³
  • PM10: 16.55 µg/m³
  • O3: 0.061 ppm
  • NO2: 1 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 17.83 µg/m³
  • PM10: 18.43 µg/m³
  • O3: 0.063 ppm
  • NO2: 1.1 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 19.25 µg/m³
  • PM10: 19.91 µg/m³
  • O3: 0.065 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 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.

6 PM
80 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 20.35 µg/m³
  • PM10: 21.07 µg/m³
  • O3: 0.064 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

7 PM
74 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 21.16 µg/m³
  • PM10: 21.94 µg/m³
  • O3: 0.062 ppm
  • NO2: 3.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.76 µg/m³
  • PM10: 22.6 µg/m³
  • O3: 0.060 ppm
  • NO2: 3.2 ppb
  • SO2: 0.3 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 PM
72 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 22.4 µg/m³
  • PM10: 23.31 µg/m³
  • O3: 0.059 ppm
  • NO2: 3.1 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 22.94 µg/m³
  • PM10: 23.89 µg/m³
  • O3: 0.058 ppm
  • NO2: 2.8 ppb
  • SO2: 0.3 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.

11 PM
74 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 23.18 µg/m³
  • PM10: 24.13 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.5 ppb
  • SO2: 0.3 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.