Today | Weather | Monday, June 29, 2026
Active Weather Warnings

Weather in Hattiesburg, Mississippi

08:48 PM
Now
Cloudy Night
88° F
Feels Like 100°
Precipitation 0 %
Wind 4 mph
Humidity 70 %
Today
Cloudy Weather
Day 97°
Night 73°
Precipitation 0 %
Wind 4 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

Air Quality in Hattiesburg

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.26 µg/m³
PM10 4.08 µg/m³
O3 0.026 ppm
NO2 1.8 ppb
SO2 0.4 ppb
CO 0.09 ppm
NH3 0.16 µg/m³
NO 0 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)
PM2.52.26 µg/m³
PM104.08 µg/m³
O351.83 µg/m³
NO23.41 µg/m³
SO21.14 µg/m³
CO107.36 µg/m³
NH30.16 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Hattiesburg

Moderate Expected Likely

Heat Advisory

Heat Advisory issued June 29 at 12:16PM CDT until June 30 at 9:00PM CDT by NWS Jackson MS
Jun 29, 12:16 PM Jun 30, 9:00 PM
WHAT: Heat index values up to 110 degrees.

WHERE: Portions of southeast Arkansas, northeast Louisiana, and
central, north central, northwest, south central, southeast,
southwest, and west central Mississippi.

WHEN: Until 9 PM CDT Tuesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
+ 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: Jun 29, 7:50 PM Source: NWS Alert