Extreme Heat Warning — Sharp, AR, Randolph, AR, Independence, AR, Lawrence, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Lincoln, AR, Desha, AR, Drew, AR, Southern Pope County, AR, Western and Northern Logan County, AR, Northwest Yell County, AR, Southern and Eastern Logan County, AR, Yell Excluding Northwest, AR 9:00 PM Heat Advisory — Marion, AR, Baxter, AR, Fulton, AR, Stone, AR, Izard, AR, Cleburne, AR, Garland, AR, Pike, AR, Clark, AR, Hot Spring, AR, Dallas, AR, Cleveland, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southeast Van Buren County, AR, Northern Scott County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Central and Southern Scott County, AR, Northern Polk County Higher Elevations, AR, Northern Montgomery County Higher Elevations, AR, Southeast Polk County Higher Elevations, AR, Southwest Montgomery County Higher Elevations, AR, Sharp, AR, Randolph, AR, Independence, AR, Lawrence, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Lincoln, AR, Desha, AR, Drew, AR, Southern Pope County, AR, Western and Northern Logan County, AR, Northwest Yell County, AR, Southern and Eastern Logan County, AR, Yell Excluding Northwest, AR, Newton County Higher Elevations, AR, Boone County Higher Elevations, AR, Johnson County Higher Elevations, AR, Pope County Higher Elevations, AR, Van Buren County Higher Elevations, AR, Eastern, Central, and Southern Searcy County Higher Elevations, AR 9:00 PM

Jefferson County, Arkansas, United States

Last updated: 11:16 AM CDT  ·  Refresh
35°C
Feels like 41°
Clear
▲ 38°  /  ▼ 24°
Wind
6 mph NNW
Humidity
52%
Dew Point
25°
Pressure
29.64 inHg
Visibility
10 mi
UV Index
9.2
Cloud Cover
7%
Sunrise
6:10 AM
Sunset
8:16 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2711 J/kg) — isolated convective development possible. Sunrise: 6:10AM · Sunset: 8:16PM.

Alerts

Extreme Heat Warning
Sharp, AR, Randolph, AR, Independence, AR, Lawrence, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Lincoln, AR, Desha, AR, Drew, AR, Southern Pope County, AR, Western and Northern Logan County, AR, Northwest Yell County, AR, Southern and Eastern Logan County, AR, Yell Excluding Northwest, AR
Expires 9:00 PM
Heat Advisory
Marion, AR, Baxter, AR, Fulton, AR, Stone, AR, Izard, AR, Cleburne, AR, Garland, AR, Pike, AR, Clark, AR, Hot Spring, AR, Dallas, AR, Cleveland, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southeast Van Buren County, AR, Northern Scott County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Central and Southern Scott County, AR, Northern Polk County Higher Elevations, AR, Northern Montgomery County Higher Elevations, AR, Southeast Polk County Higher Elevations, AR, Southwest Montgomery County Higher Elevations, AR, Sharp, AR, Randolph, AR, Independence, AR, Lawrence, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Lincoln, AR, Desha, AR, Drew, AR, Southern Pope County, AR, Western and Northern Logan County, AR, Northwest Yell County, AR, Southern and Eastern Logan County, AR, Yell Excluding Northwest, AR, Newton County Higher Elevations, AR, Boone County Higher Elevations, AR, Johnson County Higher Elevations, AR, Pope County Higher Elevations, AR, Van Buren County Higher Elevations, AR, Eastern, Central, and Southern Searcy County Higher Elevations, AR
Expires 9:00 PM
66 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
3%
12 PM
34°
14%
1 PM
37°
3%
2 PM
37°
9%
3 PM
37°
16%
4 PM
38°
16%
5 PM
38°
16%
6 PM
38°
20%
7 PM
37°
20%
8 PM
34°
24%
9 PM
32°
26%
10 PM
31°
27%
11 PM
30°
27%
12 AM
29°
27%
1 AM
28°
27%
2 AM
27°
27%
3 AM
27°
27%
4 AM
26°
18%
5 AM
24°
9%
6 AM
24°
9%
7 AM
25°
3%
8 AM
26°
3%
9 AM
28°
3%
10 AM
28°
3%
7-Day Forecast
Today
38° 24°
Mostly Clear with a 27% chance of rain.
Wed
34° 23°
Clear with a 27% chance of rain.
Thu
32° 19°
Partly Cloudy.
Fri
34° 22°
Partly Cloudy with a 58% chance of rain.
Sat
36° 24°
Rain, 50% chance.
Sun
38° 24°
Clear.
Mon
39° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Clear 3% 6 mph NNW 52%
12 PM 34° Mostly Clear 14% 7 mph N 46%
1 PM 37° Mostly Clear 3% 7 mph N 42%
2 PM 37° Mostly Clear 9% 7 mph N 41%
3 PM 37° Mostly Clear 16% 7 mph N 40%
4 PM 38° Partly Cloudy 16% 7 mph N 40%
5 PM 38° Partly Cloudy 16% 6 mph NNE 41%
6 PM 38° Partly Cloudy 20% 5 mph NNE 42%
7 PM 37° Partly Cloudy 20% 4 mph ENE 46%
8 PM 34° Mostly Clear 24% 3 mph ESE 51%
9 PM 32° Mostly Clear 26% 4 mph S 56%
10 PM 31° Mostly Clear 27% 5 mph S 61%
11 PM 30° Partly Cloudy 27% 5 mph SSE 67%
12 AM 29° Partly Cloudy 27% 5 mph SE 74%
1 AM 28° Partly Cloudy 27% 6 mph E 78%
2 AM 27° Mostly Cloudy 27% 5 mph NE 81%
3 AM 27° Overcast 27% 5 mph NNE 83%
4 AM 26° Overcast 18% 6 mph N 85%
5 AM 24° Mostly Cloudy 9% 8 mph NNE 83%
6 AM 24° Mostly Cloudy 9% 10 mph NNE 80%
7 AM 25° Partly Cloudy 3% 10 mph NNE 77%
8 AM 26° Partly Cloudy 3% 10 mph NNE 72%
9 AM 28° Partly Cloudy 3% 11 mph NE 66%
10 AM 28° Mostly Clear 3% 11 mph NE 61%
15-Day Forecast
Today
7/21
Mostly Clear
27%
24°
38°
Wed
7/22
Clear
27%
23°
34°
Thu
7/23
Partly Cloudy
3%
19°
32°
Fri
7/24
Partly Cloudy
58%
22°
34°
Sat
7/25
Rain
50%
24°
36°
Sun
7/26
Clear
16%
24°
38°
Mon
7/27
Clear
8%
24°
39°
Tue
7/28
Clear
43%
25°
41°
Wed
7/29
Rain
68%
24°
40°
Thu
7/30
Clear
51%
25°
41°
Fri
7/31
Drizzle
60%
25°
38°
Sat
8/1
Clear
60%
24°
38°
Sun
8/2
Drizzle
60%
23°
37°
Mon
8/3
Drizzle
60%
23°
36°
Tue
8/4
Drizzle
60%
23°
36°
66
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
66 AQI 17.4 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 66 Moderate 42 66
Thu 55 Moderate 38 55
Fri 52 Moderate 37 52
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Jul 21, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3728 J/kg
MLCAPE2679 J/kg
MUCAPE3728 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.3
Kinematics
0–6 km Shear9 kt
0–1 km Shear6 kt
Eff. Shear8 kt
0–1 km SRH1
0–3 km SRH-8
Eff. SRH-8
Storm Motion340° @ 25 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.8
Thermo & Levels
PWAT2.13 in
0–3 km LR7.6 °C/km
700–500 LR5.3 °C/km
Total Totals44.9
LCL867 hPa
LFC1004 hPa
EL126 hPa
Freezing Lvl17,470 ft