Today | Weather | Monday, July 27, 2026
Active Weather Warnings

Weather in Louisville, Kentucky

10:04 AM
Now
Cloudy Weather
79° F
Feels Like 90°
Precipitation 6 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 87 %
Today
Sunny with a Chance of Thunderstorms
Day 90°
Night 75°
Precipitation 55 %
Wind 6 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

27 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 27, 2025)
Stormy Weather

Day

95°

Night

75°

Wind

6 mph

Precipitation

46 %

Air Quality in Louisville

NOW
40 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.48 µg/m³
PM10 9.78 µg/m³
O3 0.007 ppm
NO2 2.3 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 0.88 µg/m³
NO 0.87 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)
PM2.59.48 µg/m³
PM109.78 µg/m³
O312.81 µg/m³
NO24.3 µg/m³
SO20.4 µg/m³
CO143.03 µg/m³
NH30.88 µg/m³
NO0.87 µg/m³

Weather Alerts and Warnings for Louisville

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 27 at 4:12AM EDT until July 27 at 9:00PM EDT by NWS Louisville KY
Jul 27, 11:00 AM Jul 27, 9:00 PM
WHAT: Heat index values up to 110 expected.

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

WHEN: From 11 AM EDT /10 AM CDT/ this morning to 9 PM EDT /8 PM
CDT/ this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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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.
Updated: Jul 27, 9:36 AM Source: NWS Alert