Today | Weather | Monday, July 20, 2026
Active Weather Warnings

Weather in Lafayette, Louisiana

03:36 PM
Now
Cloudy Weather
93° F
Feels Like 106°
Precipitation 7 %
Wind 8 mph
UV Index (0 - 11+) 5
Humidity 51 %
Today
Cloudy Weather
Day 97°
Night 79°
Precipitation 25 %
Wind 7 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.

Lafayette Weather Forecast Updated

28 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Night

Day

93°

Night

75°

Wind

4 mph

Precipitation

24 %

Air Quality in Lafayette

NOW
48 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 9.65 µg/m³
PM10 16.45 µg/m³
O3 0.052 ppm
NO2 0.3 ppb
SO2 0.8 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0.07 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)
PM2.59.65 µg/m³
PM1016.45 µg/m³
O3101.54 µg/m³
NO20.56 µg/m³
SO22.06 µg/m³
CO98.53 µg/m³
NH30 µg/m³
NO0.07 µg/m³

Weather Alerts and Warnings for Lafayette

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 10:53AM CDT until July 20 at 7:00PM CDT by NWS Lake Charles LA
Jul 20, 11:00 AM Jul 20, 7:00 PM
WHAT: For the first Heat Advisory, heat index values 108 to 110
expected. For the second Heat Advisory, heat index values 108 to
112 expected.

WHERE: Portions of central, south central, and southwest
Louisiana.

WHEN: For the first Heat Advisory, until 7 PM CDT this evening.
For the second Heat Advisory, from noon to 7 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.
Updated: Jul 20, 3:08 PM Source: NWS Alert