Today | Weather | Thursday, May 21, 2026

Active Weather Warnings

Flood Warning

Weather in Lafayette, Louisiana

10:19 AM

Now

77° F

Feels Like 82°

Precipitation 67 %

Wind 5 mph

UV Index (0 - 11+) 1

Humidity 83 %

Today

Day 81°

Night 72°

Precipitation 97 %

Wind 7 mph

UV Index (0 - 11+) 4

Lafayette Weather Forecast Updated

4 minutes ago

Last updated on May 21, 2026 at 10:15 AM

Weather Forecast History

Last Year's Weather on This Day (May 21, 2025)

Day

82°

Night

72°

Wind

4 mph

UV Index

Precipitation

40 %

Air Quality in Lafayette

NOW

24 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.2 µg/m³

PM₁₀ 3.32 µg/m³

O₃ 0.026 ppm

NO₂ 0.3 ppb

SO₂ 0.1 ppb

CO 0.09 ppm

NH₃ 0.07 µg/m³

NO 0.01 µg/m³

PM_2.5 – 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)

PM_2.5 – 2.2 µg/m³

PM₁₀ – 3.32 µg/m³

O₃ – 50.47 µg/m³

NO₂ – 0.6 µg/m³

SO₂ – 0.34 µg/m³

CO – 97.76 µg/m³

NH₃ – 0.07 µg/m³

NO – 0.01 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Lafayette

Severe Immediate Observed

Flood Warning

Flood Warning issued May 20 at 11:27PM CDT until May 22 at 7:00AM CDT by NWS Lake Charles LA

May 20, 11:27 PM → May 22, 7:00 AM

...The Flood Warning is extended for the following rivers in
Louisiana...

Calcasieu River near White Oak Park

...The Flood Warning continues for the following rivers in
Louisiana...

Vermilion River At Lafayette, Surrey Street Gage

Additional information is available at www.weather.gov.

WHAT: Minor flooding is occurring and minor flooding is forecast.

WHERE: Vermilion River at Lafayette, Surrey Street Gage.

WHEN: Until Friday morning.

IMPACTS: At 10.0 feet, Minor flooding of Heymann Park off of
Highway 90 will occur.

ADDITIONAL DETAILS:
- At 11:15 PM CDT Wednesday the stage was 10.1 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 11:15 PM CDT Wednesday was 10.1 feet.
- Forecast...The river is expected to rise to a crest of 10.1
feet just after midnight tonight. It will then fall below
flood stage tomorrow evening.
- Flood stage is 10.0 feet.
- http://www.weather.gov/safety/flood

Updated: May 21, 8:38 AM Source: NWS Alert