Today | Weather | Sunday, August 16, 2026

Active Weather Warnings

Heat Advisory

Weather in Louisville, Kentucky

11:30 AM

Now

86° F

Feels Like 99°

Precipitation 2 %

Wind 8 mph

UV Index (0 - 11+) 6

Humidity 66 %

Today

Day 95°

Night 73°

Precipitation 55 %

Wind 7 mph

UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Louisville Weather Forecast Updated

22 minutes ago

Last updated on August 16, 2026 at 11:07 AM

Weather Forecast History

Last Year's Weather on This Day (August 16, 2025)

Day

95°

Night

72°

Wind

4 mph

UV Index

Precipitation

2 %

Air Quality in Louisville

NOW

26 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 4.78 µg/m³

PM₁₀ 7.09 µg/m³

O₃ 0.028 ppm

NO₂ 1.1 ppb

SO₂ 0.8 ppb

CO 0.09 ppm

NH₃ 1.87 µg/m³

NO 0.56 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 – 4.78 µg/m³

PM₁₀ – 7.09 µg/m³

O₃ – 54.93 µg/m³

NO₂ – 2.04 µg/m³

SO₂ – 1.98 µg/m³

CO – 102.22 µg/m³

NH₃ – 1.87 µg/m³

NO – 0.56 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Louisville

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 16 at 4:16AM EDT until August 16 at 9:00PM EDT by NWS Louisville KY

Aug 16, 4:16 AM → Aug 16, 9:00 PM

WHAT: Heat index values up to 109.

WHERE: Portions of south central Indiana and east central, north
central, northwest, and south central Kentucky.

WHEN: Until 9 PM EDT /8 PM CDT/ this evening.

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.

Updated: Aug 16, 11:07 AM Source: NWS Alert