Hourly Weather | Today Tuesday, July 21, 2026
Active Weather Warnings
Hattiesburg, Mississippi
4 AM
Cloudy Night
77°
Feels Like 88°
0
Humidity: 91%
UV Index: 0
Wind: 2 mph
5 AM
Cloudy Night
77°
Feels Like 86°
0
Humidity: 92%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Night
75°
Feels Like 84°
0
Humidity: 97%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
77°
Feels Like 86°
0
Humidity: 92%
UV Index: 1
Wind: 4 mph
8 AM
Sunny Weather
81°
Feels Like 91°
6
Humidity: 84%
UV Index: 2
Wind: 4 mph
9 AM
Sunny Weather
84°
Feels Like 97°
6
Humidity: 74%
UV Index: 3
Wind: 4 mph
10 AM
Cloudy Weather
88°
Feels Like 102°
5
Humidity: 68%
UV Index: 5
Wind: 6 mph
11 AM
Cloudy Weather
90°
Feels Like 106°
4
Humidity: 61%
UV Index: 8
Wind: 6 mph
12 PM
Cloudy Weather
93°
Feels Like 109°
4
Humidity: 55%
UV Index: 11
Wind: 7 mph
1 PM
Cloudy Weather
95°
Feels Like 111°
7
Humidity: 51%
UV Index: 11
Wind: 7 mph
2 PM
Cloudy Weather
99°
Feels Like 113°
47
Humidity: 46%
UV Index: 11
Wind: 7 mph
3 PM
Sunny with a Chance of Thunderstorms
97°
Feels Like 108°
51
Humidity: 49%
UV Index: 8
Wind: 7 mph
4 PM
Cloudy Weather
97°
Feels Like 108°
47
Humidity: 49%
UV Index: 5
Wind: 7 mph
5 PM
Cloudy Weather
95°
Feels Like 106°
19
Humidity: 50%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
93°
Feels Like 104°
19
Humidity: 55%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
91°
Feels Like 100°
14
Humidity: 61%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
88°
Feels Like 99°
3
Humidity: 69%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
86°
Feels Like 97°
3
Humidity: 75%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
82°
Feels Like 95°
3
Humidity: 82%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
81°
Feels Like 91°
3
Humidity: 89%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.33 µg/m³
  • PM10: 6.31 µg/m³
  • O3: 0.021 ppm
  • NO2: 2 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.44 µg/m³
  • PM10: 6.53 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.6 µg/m³
  • PM10: 6.8 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.71 µg/m³
  • PM10: 7.01 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.72 µg/m³
  • PM10: 7.12 µg/m³
  • O3: 0.014 ppm
  • NO2: 2.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.77 µg/m³
  • PM10: 7.27 µg/m³
  • O3: 0.016 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.23 µg/m³
  • PM10: 7.8 µg/m³
  • O3: 0.024 ppm
  • NO2: 2 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.57 µg/m³
  • PM10: 7.75 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.44 µg/m³
  • PM10: 7.32 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.99 µg/m³
  • PM10: 6.69 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.16 µg/m³
  • PM10: 5.72 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.66 µg/m³
  • PM10: 5.14 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.34 µg/m³
  • PM10: 4.77 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.28 µg/m³
  • PM10: 4.68 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.74 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.78 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.8 µg/m³
  • PM10: 7.33 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.38 µg/m³
  • PM10: 7.96 µg/m³
  • O3: 0.034 ppm
  • NO2: 4 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 8.12 µg/m³
  • O3: 0.029 ppm
  • NO2: 4.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.1 µg/m³
  • PM10: 7.73 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Hattiesburg

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 9:23PM CDT until July 21 at 9:00PM CDT by NWS Jackson MS
Jul 20, 9:23 PM Jul 21, 9:00 PM
WHAT: Heat index values up to 112.

WHERE: Portions of central, east central, south central,
southeast, and southwest Mississippi.

WHEN: Until 9 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates.
Updated: Jul 21, 2:41 AM Source: NWS Alert