Hourly Weather | Today Tuesday, July 21, 2026
Appleton, Wisconsin
4 AM
Cloudy Night
72°
Feels Like 72°
20
Humidity: 84%
UV Index: 0
Wind: 9 mph
5 AM
Cloudy Night
70°
Feels Like 70°
20
Humidity: 87%
UV Index: 0
Wind: 10 mph
6 AM
Cloudy Weather
68°
Feels Like 66°
20
Humidity: 91%
UV Index: 0
Wind: 10 mph
7 AM
Cloudy Weather
70°
Feels Like 70°
15
Humidity: 86%
UV Index: 1
Wind: 12 mph
8 AM
Cloudy Weather
72°
Feels Like 72°
5
Humidity: 80%
UV Index: 2
Wind: 14 mph
9 AM
Cloudy Weather
73°
Feels Like 75°
5
Humidity: 73%
UV Index: 3
Wind: 14 mph
10 AM
Cloudy Weather
75°
Feels Like 77°
6
Humidity: 69%
UV Index: 5
Wind: 15 mph
11 AM
Cloudy Weather
75°
Feels Like 79°
7
Humidity: 65%
UV Index: 7
Wind: 16 mph
12 PM
Cloudy Weather
77°
Feels Like 81°
7
Humidity: 62%
UV Index: 8
Wind: 16 mph
1 PM
Cloudy Weather
77°
Feels Like 81°
9
Humidity: 59%
UV Index: 9
Wind: 16 mph
2 PM
Cloudy Weather
79°
Feels Like 81°
14
Humidity: 56%
UV Index: 8
Wind: 15 mph
3 PM
Cloudy Weather
79°
Feels Like 81°
14
Humidity: 54%
UV Index: 7
Wind: 15 mph
4 PM
Cloudy Weather
79°
Feels Like 79°
18
Humidity: 52%
UV Index: 5
Wind: 15 mph
5 PM
Sunny with a Chance of Thunderstorms
75°
Feels Like 73°
51
Humidity: 53%
UV Index: 3
Wind: 15 mph
6 PM
Cloudy Weather
73°
Feels Like 72°
47
Humidity: 56%
UV Index: 2
Wind: 16 mph
7 PM
Cloudy Weather
70°
Feels Like 68°
29
Humidity: 57%
UV Index: 1
Wind: 16 mph
8 PM
Cloudy Weather
68°
Feels Like 64°
0
Humidity: 59%
UV Index: 0
Wind: 14 mph
9 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 63%
UV Index: 0
Wind: 12 mph
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 66%
UV Index: 0
Wind: 9 mph
11 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 72%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
47 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.23 µg/m³
  • PM10: 11.46 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.8 µg/m³
  • PM10: 12.01 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 AM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.83 µg/m³
  • PM10: 12.04 µg/m³
  • O3: 0.032 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.

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

Pollutant Concentrations:

  • PM2.5: 11.01 µg/m³
  • PM10: 11.22 µg/m³
  • O3: 0.031 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.

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

Pollutant Concentrations:

  • PM2.5: 9.07 µg/m³
  • PM10: 9.27 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 AM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.49 µg/m³
  • PM10: 6.68 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.22 µg/m³
  • PM10: 4.39 µg/m³
  • O3: 0.030 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.

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

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 2.52 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.6 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
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.63 µg/m³
  • PM10: 1.71 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 1.43 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.05 µg/m³
  • PM10: 1.11 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.81 µg/m³
  • PM10: 0.85 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 0.75 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.65 µg/m³
  • PM10: 0.7 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 0.74 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.71 µg/m³
  • PM10: 0.81 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.8 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
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.77 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.032 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.83 µg/m³
  • PM10: 1.01 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 1.05 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.78 µg/m³
  • PM10: 0.99 µg/m³
  • O3: 0.027 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.