Hourly Weather | Today Wednesday, August 12, 2026
Active Weather Warnings
Green Bay, Wisconsin
8 AM
Foggy Weather
68°
Feels Like 70°
25
Humidity: 96%
UV Index: 1
Wind: 5 mph
9 AM
Foggy Weather
70°
Feels Like 73°
20
Humidity: 93%
UV Index: 1
Wind: 5 mph
10 AM
Foggy Weather
72°
Feels Like 75°
20
Humidity: 89%
UV Index: 1
Wind: 6 mph
11 AM
Foggy Weather
73°
Feels Like 79°
20
Humidity: 84%
UV Index: 2
Wind: 6 mph
12 PM
Foggy Weather
75°
Feels Like 81°
20
Humidity: 77%
UV Index: 3
Wind: 6 mph
1 PM
Foggy Weather
77°
Feels Like 84°
25
Humidity: 72%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
79°
Feels Like 84°
43
Humidity: 67%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
81°
Feels Like 84°
47
Humidity: 60%
UV Index: 2
Wind: 6 mph
4 PM
Sunny with a Chance of Thunderstorms
81°
Feels Like 81°
51
Humidity: 63%
UV Index: 1
Wind: 6 mph
5 PM
Cloudy Weather
79°
Feels Like 84°
24
Humidity: 65%
UV Index: 3
Wind: 6 mph
6 PM
Cloudy Weather
79°
Feels Like 82°
19
Humidity: 65%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
77°
Feels Like 79°
13
Humidity: 69%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 77%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
72°
Feels Like 73°
0
Humidity: 85%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 91%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 97%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 21.12 µg/m³
  • PM10: 21.46 µg/m³
  • O3: 0.009 ppm
  • NO2: 4.5 ppb
  • SO2: 0.2 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
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.34 µg/m³
  • PM10: 17.69 µg/m³
  • O3: 0.010 ppm
  • NO2: 4.8 ppb
  • SO2: 0.2 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
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.7 µg/m³
  • PM10: 16.04 µg/m³
  • O3: 0.014 ppm
  • NO2: 4 ppb
  • SO2: 0.2 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
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.24 µg/m³
  • PM10: 14.55 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.8 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 12.44 µg/m³
  • PM10: 12.72 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.3 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 11.2 µg/m³
  • PM10: 11.46 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.24 µg/m³
  • PM10: 10.5 µg/m³
  • O3: 0.030 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.84 µg/m³
  • PM10: 10.09 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.01 µg/m³
  • PM10: 10.26 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.25 µg/m³
  • PM10: 10.5 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.3 µg/m³
  • PM10: 10.59 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.08 µg/m³
  • PM10: 10.42 µg/m³
  • O3: 0.038 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.99 µg/m³
  • PM10: 10.4 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.15 µg/m³
  • PM10: 10.64 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.29 µg/m³
  • PM10: 10.86 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.36 µg/m³
  • PM10: 11 µg/m³
  • O3: 0.019 ppm
  • NO2: 5.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Green Bay

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued August 12 at 6:08AM CDT by NWS Green Bay WI
Aug 12, 6:08 AM Aug 12, 9:00 AM
Patchy dense fog, with visibility less than one-half mile at
times, has developed over portions of the area this morning. The
fog is expected to lift quickly after 8 AM.

If you encounter dense fog while driving this morning, be sure to
use your low-beam headlights and maintain plenty of distance
between your vehicle and other vehicles.
Updated: Aug 12, 6:24 AM Source: NWS Alert