Heat Advisory — Harper, OK, Woods, OK, Alfalfa, OK, Grant, OK, Kay, OK, Ellis, OK, Woodward, OK, Major, OK, Garfield, OK, Noble, OK, Roger Mills, OK, Dewey, OK, Custer, OK, Blaine, OK, Kingfisher, OK, Logan, OK, Payne, OK, Beckham, OK, Washita, OK, Caddo, OK, Canadian, OK, Oklahoma, OK, Lincoln, OK, Grady, OK, McClain, OK, Cleveland, OK, Pottawatomie, OK, Seminole, OK, Hughes, OK, Harmon, OK, Greer, OK, Kiowa, OK, Jackson, OK, Tillman, OK, Comanche, OK, Stephens, OK, Garvin, OK, Murray, OK, Pontotoc, OK, Coal, OK, Cotton, OK, Jefferson, OK, Carter, OK, Johnston, OK, Atoka, OK, Love, OK, Marshall, OK, Bryan, OK, Hardeman, TX, Foard, TX, Wilbarger, TX, Wichita, TX, Knox, TX, Baylor, TX, Archer, TX, Clay, TX 8:00 PM

Jefferson County, Oklahoma, United States

Last updated: 1:14 PM CDT  ·  Refresh
100°F
Feels like 102°
Clear
▲ 105°  /  ▼ 78°
Wind
15 mph SSW
Humidity
31%
Dew Point
67°
Pressure
28.93 inHg
Visibility
10 mi
UV Index
9.6
Cloud Cover
4%
Sunrise
6:50 AM
Sunset
8:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 100°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1437 J/kg) — isolated convective development possible. Sunrise: 6:50AM · Sunset: 8:21PM.

Alerts

Heat Advisory
Harper, OK, Woods, OK, Alfalfa, OK, Grant, OK, Kay, OK, Ellis, OK, Woodward, OK, Major, OK, Garfield, OK, Noble, OK, Roger Mills, OK, Dewey, OK, Custer, OK, Blaine, OK, Kingfisher, OK, Logan, OK, Payne, OK, Beckham, OK, Washita, OK, Caddo, OK, Canadian, OK, Oklahoma, OK, Lincoln, OK, Grady, OK, McClain, OK, Cleveland, OK, Pottawatomie, OK, Seminole, OK, Hughes, OK, Harmon, OK, Greer, OK, Kiowa, OK, Jackson, OK, Tillman, OK, Comanche, OK, Stephens, OK, Garvin, OK, Murray, OK, Pontotoc, OK, Coal, OK, Cotton, OK, Jefferson, OK, Carter, OK, Johnston, OK, Atoka, OK, Love, OK, Marshall, OK, Bryan, OK, Hardeman, TX, Foard, TX, Wilbarger, TX, Wichita, TX, Knox, TX, Baylor, TX, Archer, TX, Clay, TX
Expires 8:00 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
100°
3%
2 PM
101°
3%
3 PM
102°
3%
4 PM
102°
3%
5 PM
102°
3%
6 PM
105°
3%
7 PM
103°
3%
8 PM
99°
3%
9 PM
95°
3%
10 PM
91°
3%
11 PM
90°
3%
12 AM
88°
3%
1 AM
87°
3%
2 AM
86°
3%
3 AM
85°
3%
4 AM
84°
3%
5 AM
83°
3%
6 AM
78°
3%
7 AM
78°
3%
8 AM
80°
3%
9 AM
83°
3%
10 AM
89°
3%
11 AM
91°
3%
12 PM
93°
3%
7-Day Forecast
Today
105° 78°
Clear.
Thu
107° 78°
Clear.
Fri
104° 76°
Mostly Clear.
Sat
103° 75°
Clear.
Sun
106° 78°
Clear.
Mon
108° 74°
Clear.
Tue
108° 79°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 100° Clear 3% 15 mph SSW 31%
2 PM 101° Mostly Clear 3% 15 mph SSW 29%
3 PM 102° Clear 3% 16 mph SSW 27%
4 PM 102° Clear 3% 16 mph S 25%
5 PM 102° Clear 3% 16 mph S 24%
6 PM 105° Clear 3% 16 mph S 24%
7 PM 103° Clear 3% 16 mph S 24%
8 PM 99° Clear 3% 14 mph S 27%
9 PM 95° Clear 3% 12 mph S 31%
10 PM 91° Clear 3% 12 mph SSE 34%
11 PM 90° Clear 3% 12 mph S 36%
12 AM 88° Clear 3% 12 mph S 38%
1 AM 87° Clear 3% 13 mph S 41%
2 AM 86° Clear 3% 13 mph S 44%
3 AM 85° Clear 3% 13 mph S 47%
4 AM 84° Clear 3% 14 mph S 51%
5 AM 83° Clear 3% 15 mph S 56%
6 AM 78° Clear 3% 14 mph SSW 61%
7 AM 78° Clear 3% 14 mph SSW 63%
8 AM 80° Clear 3% 16 mph SSW 56%
9 AM 83° Clear 3% 17 mph SSW 50%
10 AM 89° Clear 3% 17 mph SSW 45%
11 AM 91° Clear 3% 17 mph SSW 41%
12 PM 93° Clear 3% 17 mph SSW 37%
15-Day Forecast
Today
8/12
Clear
3%
78°
105°
Thu
8/13
Clear
3%
78°
107°
Fri
8/14
Mostly Clear
3%
76°
104°
Sat
8/15
Clear
3%
75°
103°
Sun
8/16
Clear
3%
78°
106°
Mon
8/17
Clear
3%
74°
108°
Tue
8/18
Clear
9%
79°
108°
Wed
8/19
Clear
25%
79°
108°
Thu
8/20
Clear
25%
80°
107°
Fri
8/21
Drizzle
60%
73°
105°
Sat
8/22
Clear
60%
67°
105°
Sun
8/23
Drizzle
60%
79°
104°
Mon
8/24
Drizzle
60%
78°
102°
Tue
8/25
Drizzle
60%
77°
101°
Wed
8/26
Drizzle
60%
77°
101°
37
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
37 AQI 6.6 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 37 Good 34 37
Fri 44 Good 37 44
Sat 48 Good 36 48
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 Wed Aug 12, 17:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2226 J/kg
MLCAPE1203 J/kg
MUCAPE2226 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.1
Kinematics
0–6 km Shear10 kt
0–1 km Shear4 kt
Eff. Shear10 kt
0–1 km SRH-10
0–3 km SRH1
Eff. SRH1
Storm Motion157° @ 17 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.8
Thermo & Levels
PWAT1.56 in
0–3 km LR8.5 °C/km
700–500 LR6.2 °C/km
Total Totals47.1
LCL753 hPa
LFC980 hPa
EL155 hPa
Freezing Lvl16,381 ft