Today | Weather | Wednesday, August 12, 2026
Active Weather Warnings

Weather in Hattiesburg, Mississippi

06:50 AM
Now
Cloudy Weather
79° F
Feels Like 88°
Precipitation 8 %
Wind 4 mph
UV Index (0 - 11+) 1
Humidity 93 %
Today
Sunny with a Chance of Thunderstorms
Day 99°
Night 77°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Hattiesburg Weather Forecast Updated

43 minutes ago
Last updated on

Air Quality in Hattiesburg

NOW
11 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.06 µg/m³
PM10 3.01 µg/m³
O3 0.012 ppm
NO2 2.4 ppb
SO2 0.7 ppb
CO 0.09 ppm
NH3 0.06 µg/m³
NO 0.03 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.52.06 µg/m³
PM103.01 µg/m³
O323.48 µg/m³
NO24.6 µg/m³
SO21.72 µg/m³
CO98.19 µg/m³
NH30.06 µg/m³
NO0.03 µg/m³

Weather Alerts and Warnings for Hattiesburg

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 12 at 4:22AM CDT until August 12 at 8:00PM CDT by NWS Jackson MS
Aug 12, 11:00 AM Aug 12, 8:00 PM
WHAT: Heat index values up to 107 expected.

WHERE: Portions of southeast Arkansas, northeast Louisiana, much
of Mississippi.

WHEN: From 11 AM this morning to 8 PM CDT this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

ADDITIONAL DETAILS: The threat for dangerous heat will continue
into early next week.
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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: Aug 12, 6:06 AM Source: NWS Alert