Hourly Weather Forecast for Appleton, Wisconsin

Hourly Weather | Today › Tuesday, June 30, 2026

Active Weather Warnings

Extreme Heat Warning

Appleton, Wisconsin

2 AM

81°

Feels Like 86°

Humidity: 82%

UV Index: 0

Wind: 9 mph

3 AM

79°

Feels Like 84°

Humidity: 85%

UV Index: 0

Wind: 9 mph

4 AM

79°

Feels Like 84°

Humidity: 89%

UV Index: 0

Wind: 9 mph

5 AM

77°

Feels Like 84°

Humidity: 93%

UV Index: 0

Wind: 9 mph

6 AM

79°

Feels Like 86°

Humidity: 92%

UV Index: 0

Wind: 9 mph

7 AM

81°

Feels Like 90°

Humidity: 90%

UV Index: 1

Wind: 9 mph

8 AM

82°

Feels Like 91°

Humidity: 86%

UV Index: 1

Wind: 10 mph

9 AM

84°

Feels Like 93°

Humidity: 80%

UV Index: 1

Wind: 10 mph

10 AM

84°

Feels Like 97°

Humidity: 75%

UV Index: 2

Wind: 12 mph

11 AM

88°

Feels Like 99°

Humidity: 69%

UV Index: 4

Wind: 12 mph

12 PM

90°

Feels Like 102°

Humidity: 64%

UV Index: 6

Wind: 12 mph

1 PM

91°

Feels Like 106°

Humidity: 60%

UV Index: 9

Wind: 12 mph

2 PM

93°

Feels Like 106°

Humidity: 56%

UV Index: 9

Wind: 13 mph

3 PM

93°

Feels Like 104°

Humidity: 53%

UV Index: 7

Wind: 15 mph

4 PM

97°

Feels Like 104°

Humidity: 50%

UV Index: 5

Wind: 15 mph

5 PM

93°

Feels Like 102°

Humidity: 53%

UV Index: 4

Wind: 15 mph

6 PM

93°

Feels Like 100°

Humidity: 55%

UV Index: 2

Wind: 14 mph

7 PM

90°

Feels Like 95°

Humidity: 66%

UV Index: 1

Wind: 12 mph

8 PM

88°

Feels Like 93°

Humidity: 73%

UV Index: 1

Wind: 12 mph

9 PM

86°

Feels Like 93°

Humidity: 72%

UV Index: 0

Wind: 10 mph

10 PM

84°

Feels Like 91°

Humidity: 76%

UV Index: 0

Wind: 9 mph

11 PM

82°

Feels Like 90°

Humidity: 79%

UV Index: 0

Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM

28 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 6.8 µg/m³
PM₁₀: 9.02 µg/m³
O₃: 0.026 ppm
NO₂: 1 ppb
SO₂: 0.4 ppb
CO: 0.11 ppm

Health Recommendations:

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

3 AM

25 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 5.94 µg/m³
PM₁₀: 8.1 µg/m³
O₃: 0.024 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

4 AM

22 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 5.17 µg/m³
PM₁₀: 7.26 µg/m³
O₃: 0.022 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

5 AM

19 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.56 µg/m³
PM₁₀: 6.55 µg/m³
O₃: 0.021 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

6 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.16 µg/m³
PM₁₀: 6.03 µg/m³
O₃: 0.020 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

7 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.95 µg/m³
PM₁₀: 5.67 µg/m³
O₃: 0.019 ppm
NO₂: 1 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

8 AM

17 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.9 µg/m³
PM₁₀: 5.43 µg/m³
O₃: 0.019 ppm
NO₂: 1 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

9 AM

17 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.99 µg/m³
PM₁₀: 5.28 µg/m³
O₃: 0.019 ppm
NO₂: 1.1 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

10 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.17 µg/m³
PM₁₀: 5.22 µg/m³
O₃: 0.020 ppm
NO₂: 1.1 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

11 AM

20 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.46 µg/m³
PM₁₀: 5.32 µg/m³
O₃: 0.022 ppm
NO₂: 1 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

12 PM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.85 µg/m³
PM₁₀: 5.59 µg/m³
O₃: 0.024 ppm
NO₂: 0.8 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

1 PM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.25 µg/m³
PM₁₀: 5.95 µg/m³
O₃: 0.027 ppm
NO₂: 0.6 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

2 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.16 µg/m³
PM₁₀: 5.97 µg/m³
O₃: 0.032 ppm
NO₂: 0.4 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

3 PM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.27 µg/m³
PM₁₀: 6.46 µg/m³
O₃: 0.034 ppm
NO₂: 0.4 ppb
SO₂: 0.3 ppb
CO: 0.09 ppm

Health Recommendations:

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

4 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.61 µg/m³
PM₁₀: 7.46 µg/m³
O₃: 0.035 ppm
NO₂: 0.4 ppb
SO₂: 0.3 ppb
CO: 0.09 ppm

Health Recommendations:

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

5 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.14 µg/m³
PM₁₀: 8.77 µg/m³
O₃: 0.037 ppm
NO₂: 0.5 ppb
SO₂: 0.3 ppb
CO: 0.09 ppm

Health Recommendations:

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

6 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.78 µg/m³
PM₁₀: 10.15 µg/m³
O₃: 0.037 ppm
NO₂: 0.6 ppb
SO₂: 0.3 ppb
CO: 0.09 ppm

Health Recommendations:

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

7 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.44 µg/m³
PM₁₀: 11.42 µg/m³
O₃: 0.036 ppm
NO₂: 0.8 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

8 PM

33 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 7.91 µg/m³
PM₁₀: 12.13 µg/m³
O₃: 0.033 ppm
NO₂: 1.3 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

9 PM

35 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.29 µg/m³
PM₁₀: 12.52 µg/m³
O₃: 0.028 ppm
NO₂: 1.8 ppb
SO₂: 0.2 ppb
CO: 0.10 ppm

Health Recommendations:

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

10 PM

36 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.62 µg/m³
PM₁₀: 12.88 µg/m³
O₃: 0.024 ppm
NO₂: 2.1 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

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

11 PM

35 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.51 µg/m³
PM₁₀: 12.59 µg/m³
O₃: 0.022 ppm
NO₂: 2.1 ppb
SO₂: 0.1 ppb
CO: 0.11 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Appleton

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued June 29 at 5:52PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI

Jun 29, 5:52 PM → Jun 30, 7:00 PM

WHAT: Dangerously hot conditions with heat index values up to 109
expected. Overnight heat indices will remain around 75 degrees,
which will still be hazardous for anyone without shelter after the
extreme heat in the afternoon.

WHERE: Marathon, Portage, Waushara, Wood, Calumet, Winnebago,
Brown, Outagamie, Shawano, and Waupaca Counties.

WHEN: Until 7 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Updated: Jun 30, 12:47 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Appleton

Extreme Heat Warning

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