Hourly Weather | Today Tuesday, September 1, 2026
Appleton, Wisconsin
11 AM
Foggy Weather
81°
Feels Like 91°
7
Humidity: 86%
UV Index: 2
Wind: 5 mph
12 PM
Foggy Weather
82°
Feels Like 93°
7
Humidity: 77%
UV Index: 2
Wind: 6 mph
1 PM
Foggy Weather
86°
Feels Like 97°
7
Humidity: 69%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
88°
Feels Like 99°
7
Humidity: 63%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
90°
Feels Like 99°
7
Humidity: 56%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
90°
Feels Like 95°
6
Humidity: 56%
UV Index: 2
Wind: 7 mph
5 PM
Cloudy Weather
88°
Feels Like 93°
5
Humidity: 55%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
88°
Feels Like 91°
5
Humidity: 57%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
86°
Feels Like 90°
8
Humidity: 61%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
84°
Feels Like 88°
43
Humidity: 64%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
82°
Feels Like 86°
47
Humidity: 69%
UV Index: 0
Wind: 6 mph
10 PM
Stormy Weather
81°
Feels Like 81°
51
Humidity: 77%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
79°
Feels Like 82°
29
Humidity: 79%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 10.13 µg/m³
  • PM10: 10.68 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.72 µg/m³
  • PM10: 11.28 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.34 µg/m³
  • PM10: 11.9 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.86 µg/m³
  • PM10: 11.37 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.07 µg/m³
  • PM10: 10.55 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.79 µg/m³
  • PM10: 10.25 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.54 µg/m³
  • PM10: 9.98 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.2 µg/m³
  • PM10: 9.63 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.69 µg/m³
  • PM10: 9.13 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.34 µg/m³
  • PM10: 8.84 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.24 µg/m³
  • PM10: 8.86 µg/m³
  • O3: 0.016 ppm
  • NO2: 4 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.2 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.012 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.26 µg/m³
  • PM10: 9 µg/m³
  • O3: 0.010 ppm
  • NO2: 4 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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