Heat Advisory — 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, Marion, AR, Baxter, AR, Fulton, AR, Sharp, AR, Randolph, AR, Stone, AR, Izard, AR, Independence, AR, Lawrence, AR, Cleburne, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Garland, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Pike, AR, Clark, AR, Hot Spring, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Dallas, AR, Cleveland, AR, Lincoln, AR, Desha, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Drew, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southern Pope County, AR, Southeast Van Buren County, AR, Western and Northern Logan County, AR, Northern Scott County, AR, Northwest Yell County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Southern and Eastern Logan County, AR, Central and Southern Scott County, AR, Yell Excluding Northwest, 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 9:00 PM Excessive Heat Warning — Marion, AR, Baxter, AR, Fulton, AR, Sharp, AR, Randolph, AR, Stone, AR, Izard, AR, Independence, AR, Lawrence, AR, Cleburne, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Garland, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Pike, AR, Clark, AR, Hot Spring, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Dallas, AR, Cleveland, AR, Lincoln, AR, Desha, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Drew, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southern Pope County, AR, Southeast Van Buren County, AR, Western and Northern Logan County, AR, Northern Scott County, AR, Northwest Yell County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Southern and Eastern Logan County, AR, Central and Southern Scott County, AR, Yell Excluding Northwest, 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, 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: 4:53 PM CDT  ·  Refresh
37°C
Feels like 42°
Mostly Clear
▲ 37°  /  ▼ 24°
Wind
6 mph N
Humidity
42%
Dew Point
23°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
7.2
Cloud Cover
13%
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 mostly clear at 37°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2543 J/kg) — isolated convective development possible. Sunrise: 6:10AM · Sunset: 8:16PM.

Alerts

Heat Advisory
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, Marion, AR, Baxter, AR, Fulton, AR, Sharp, AR, Randolph, AR, Stone, AR, Izard, AR, Independence, AR, Lawrence, AR, Cleburne, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Garland, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Pike, AR, Clark, AR, Hot Spring, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Dallas, AR, Cleveland, AR, Lincoln, AR, Desha, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Drew, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southern Pope County, AR, Southeast Van Buren County, AR, Western and Northern Logan County, AR, Northern Scott County, AR, Northwest Yell County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Southern and Eastern Logan County, AR, Central and Southern Scott County, AR, Yell Excluding Northwest, 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
Expires 9:00 PM
Excessive Heat Warning
Marion, AR, Baxter, AR, Fulton, AR, Sharp, AR, Randolph, AR, Stone, AR, Izard, AR, Independence, AR, Lawrence, AR, Cleburne, AR, Jackson, AR, Conway, AR, Faulkner, AR, White, AR, Woodruff, AR, Perry, AR, Garland, AR, Saline, AR, Pulaski, AR, Lonoke, AR, Prairie, AR, Monroe, AR, Pike, AR, Clark, AR, Hot Spring, AR, Grant, AR, Jefferson, AR, Arkansas, AR, Dallas, AR, Cleveland, AR, Lincoln, AR, Desha, AR, Ouachita, AR, Calhoun, AR, Bradley, AR, Drew, AR, Boone County Except Southwest, AR, Searcy County Lower Elevations, AR, Southern Johnson County, AR, Southern Pope County, AR, Southeast Van Buren County, AR, Western and Northern Logan County, AR, Northern Scott County, AR, Northwest Yell County, AR, Polk County Lower Elevations, AR, Central and Eastern Montgomery County, AR, Newton County Lower Elevations, AR, Northwest Searcy County Higher Elevations, AR, Southern and Eastern Logan County, AR, Central and Southern Scott County, AR, Yell Excluding Northwest, 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, 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
67 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
8%
5 PM
37°
21%
6 PM
37°
21%
7 PM
35°
25%
8 PM
34°
32%
9 PM
31°
31%
10 PM
31°
31%
11 PM
29°
29%
12 AM
29°
30%
1 AM
28°
30%
2 AM
27°
30%
3 AM
27°
22%
4 AM
26°
10%
5 AM
24°
10%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
27°
3%
10 AM
27°
3%
11 AM
29°
3%
12 PM
30°
3%
1 PM
31°
3%
2 PM
31°
3%
3 PM
31°
3%
7-Day Forecast
Today
37° 24°
Clear with a 31% chance of rain.
Wed
33° 23°
Clear with a 30% chance of rain.
Thu
33° 21°
Partly Cloudy.
Fri
34° 22°
Mostly Cloudy with a 63% chance of rain.
Sat
36° 24°
Mostly Cloudy with a 43% chance of rain.
Sun
38° 23°
Partly Cloudy with a 20% chance of rain.
Mon
39° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Mostly Clear 8% 6 mph N 42%
5 PM 37° Clear 21% 6 mph NNE 43%
6 PM 37° Clear 21% 5 mph NE 46%
7 PM 35° Clear 25% 3 mph E 51%
8 PM 34° Clear 32% 3 mph SE 55%
9 PM 31° Mostly Clear 31% 4 mph S 59%
10 PM 31° Mostly Clear 31% 4 mph S 64%
11 PM 29° Partly Cloudy 29% 5 mph SSE 69%
12 AM 29° Partly Cloudy 30% 7 mph SE 75%
1 AM 28° Partly Cloudy 30% 6 mph SE 80%
2 AM 27° Mostly Cloudy 30% 4 mph NNE 84%
3 AM 27° Mostly Cloudy 22% 6 mph N 86%
4 AM 26° Partly Cloudy 10% 8 mph NNE 86%
5 AM 24° Mostly Clear 10% 9 mph NNE 83%
6 AM 24° Mostly Clear 3% 11 mph NNE 80%
7 AM 24° Clear 3% 12 mph NNE 74%
8 AM 26° Clear 3% 12 mph NNE 69%
9 AM 27° Clear 3% 12 mph NNE 63%
10 AM 27° Clear 3% 12 mph NNE 58%
11 AM 29° Clear 3% 12 mph NNE 54%
12 PM 30° Clear 3% 12 mph NNE 51%
1 PM 31° Clear 3% 12 mph NNE 50%
2 PM 31° Clear 3% 13 mph NNE 49%
3 PM 31° Clear 3% 13 mph NNE 48%
15-Day Forecast
Today
7/21
Clear
31%
24°
37°
Wed
7/22
Clear
30%
23°
33°
Thu
7/23
Partly Cloudy
6%
21°
33°
Fri
7/24
Mostly Cloudy
63%
22°
34°
Sat
7/25
Mostly Cloudy
43%
24°
36°
Sun
7/26
Partly Cloudy
20%
23°
38°
Mon
7/27
Clear
8%
24°
39°
Tue
7/28
Mostly Cloudy
43%
24°
39°
Wed
7/29
Drizzle
50%
23°
37°
Thu
7/30
Drizzle
60%
23°
37°
Fri
7/31
Partly Cloudy
60%
23°
36°
Sat
8/1
Drizzle
60%
23°
36°
Sun
8/2
Clear
60%
23°
36°
Mon
8/3
Drizzle
60%
24°
36°
Tue
8/4
Drizzle
60%
23°
36°
67
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
67 AQI 17.5 µg/m³
O3
Ground-level ozone
43 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 67 Moderate 43 67
Thu 54 Moderate 37 54
Fri 51 Moderate 37 51
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, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3038 J/kg
MLCAPE2425 J/kg
MUCAPE3038 J/kg
SBCIN0 J/kg
MLCIN-0 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear11 kt
0–1 km Shear4 kt
Eff. Shear12 kt
0–1 km SRH-5
0–3 km SRH-12
Eff. SRH-12
Storm Motion306° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.5
Thermo & Levels
PWAT2.11 in
0–3 km LR8.3 °C/km
700–500 LR4.9 °C/km
Total Totals44.4
LCL819 hPa
LFC1002 hPa
EL133 hPa
Freezing Lvl17,785 ft