Today | Weather | Friday, September 18, 2026
Active Weather Warnings

Weather in Little Rock, Arkansas

02:37 PM
Now
Cloudy Weather
100° F
Feels Like 106°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5
Humidity 32 %
Today
Hot Day
Day 100°
Night 72°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 7

Little Rock Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Stormy Weather

Day

93°

Night

70°

Wind

5 mph

Precipitation

88 %

Air Quality in Little Rock

NOW
47 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.93 µg/m³
PM10 7.6 µg/m³
O3 0.051 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.71 µg/m³
NO 0.06 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)
PM2.55.93 µg/m³
PM107.6 µg/m³
O3100.59 µg/m³
NO20.38 µg/m³
SO20.31 µg/m³
CO117.61 µg/m³
NH30.71 µg/m³
NO0.06 µg/m³

Weather Alerts and Warnings for Little Rock

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 18 at 3:34AM CDT until September 19 at 8:00PM CDT by NWS Little Rock AR
Sep 18, 3:34 AM Sep 19, 8:00 PM
WHAT: Heat index values up to 109.

WHERE: Portions of central, eastern, north central, southeast, and
western Arkansas.

WHEN: Until 8 PM CDT Saturday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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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.
Updated: Sep 18, 7:18 AM Source: NWS Alert