Today | Weather | Tuesday, July 21, 2026

Active Weather Warnings

Heat Advisory

Weather in Bentonville, Arkansas

02:11 AM

Now

81° F

Feels Like 88°

Precipitation 0 %

Wind 4 mph

Humidity 83 %

Today

Day 100°

Night 70°

Precipitation 0 %

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.

Bentonville Weather Forecast Updated

Last updated on July 21, 2026 at 12:50 AM

Air Quality in Bentonville

NOW

12 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 2.95 µg/m³

PM₁₀ 5.39 µg/m³

O₃ 0.011 ppm

NO₂ 1.5 ppb

SO₂ 0 ppb

CO 0.09 ppm

NH₃ 4.1 µg/m³

NO 0 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 – 2.95 µg/m³

PM₁₀ – 5.39 µg/m³

O₃ – 21.56 µg/m³

NO₂ – 2.77 µg/m³

SO₂ – 0.09 µg/m³

CO – 97.98 µg/m³

NH₃ – 4.1 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Bentonville

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 10:52PM CDT until July 21 at 8:00PM CDT by NWS Tulsa OK

Jul 21, 12:00 PM → Jul 21, 8:00 PM

WHAT: Heat index values up to 110 expected.

WHERE: In Arkansas, Benton, Carroll, Madison, Northern Crawford,
Washington AR, and Northern Franklin Counties. In Oklahoma, Adair
County.

WHEN: From noon to 8 PM CDT Tuesday.

IMPACTS: Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.

+ Read More

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 21, 12:50 AM Source: NWS Alert