Today | Weather | Tuesday, July 21, 2026

Active Weather Warnings

Weather in Jonesboro, Arkansas

02:10 AM

Now

79° F

Feels Like 91°

Precipitation 0 %

Wind 5 mph

Humidity 96 %

Today

Day 99°

Night 75°

Precipitation 55 %

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.

Jonesboro Weather Forecast Updated

52 minutes ago

Last updated on July 21, 2026 at 1:18 AM

Air Quality in Jonesboro

NOW

23 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 5.51 µg/m³

PM₁₀ 7.01 µg/m³

O₃ 0.007 ppm

NO₂ 2.6 ppb

SO₂ 0.1 ppb

CO 0.14 ppm

NH₃ 1.21 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 – 5.51 µg/m³

PM₁₀ – 7.01 µg/m³

O₃ – 14.44 µg/m³

NO₂ – 4.85 µg/m³

SO₂ – 0.3 µg/m³

CO – 156.63 µg/m³

NH₃ – 1.21 µg/m³

NO – 0.01 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Jonesboro

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued July 20 at 9:56PM CDT until July 21 at 9:00PM CDT by NWS Memphis TN

Jul 20, 9:56 PM → Jul 21, 9:00 PM

WHAT: Dangerously hot conditions with heat index values up to 116.

WHERE: Portions of East Arkansas, North Mississippi, and
Southeast Missouri.

WHEN: Until 9 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

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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.

Updated: Jul 21, 1:18 AM Source: NWS Alert

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 19 at 8:57PM CDT until July 21 at 9:00PM CDT by NWS Memphis TN

Jul 20, 10:00 AM → Jul 21, 9:00 PM

WHAT: Heat index values up to 114 expected.

WHERE: Portions of East Arkansas, North Mississippi, Southeast
Missouri, and West Tennessee.

WHEN: From 10 AM Monday to 9 PM CDT Tuesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.