Heat Advisory — Woods, OK, Alfalfa, OK, Grant, OK, Kay, OK, Major, OK, Garfield, OK, Noble, OK, Blaine, OK, Kingfisher, OK, Logan, OK, Payne, OK, Caddo, OK, Canadian, OK, Oklahoma, OK, Lincoln, OK, Grady, OK, McClain, OK, Cleveland, OK, Pottawatomie, OK, Seminole, OK, Hughes, 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, Wilbarger, TX, Wichita, TX, Baylor, TX, Archer, TX, Clay, TX 7:00 PM

Johnston County, Oklahoma, United States

Last updated: 8:12 AM CDT  ·  Refresh
27°C
Feels like 29°
Clear
▲ 39°  /  ▼ 23°
Wind
4 mph SE
Humidity
67%
Dew Point
21°
Pressure
29.13 inHg
Visibility
10 mi
UV Index
3.4
Cloud Cover
0%
Sunrise
7:04 AM
Sunset
7:42 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnston County is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 993 J/kg) — isolated convective development possible. Sunrise: 7:04AM · Sunset: 7:42PM.

Alerts

Heat Advisory
Woods, OK, Alfalfa, OK, Grant, OK, Kay, OK, Major, OK, Garfield, OK, Noble, OK, Blaine, OK, Kingfisher, OK, Logan, OK, Payne, OK, Caddo, OK, Canadian, OK, Oklahoma, OK, Lincoln, OK, Grady, OK, McClain, OK, Cleveland, OK, Pottawatomie, OK, Seminole, OK, Hughes, 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, Wilbarger, TX, Wichita, TX, Baylor, TX, Archer, TX, Clay, TX
Expires 7:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
9 AM
28°
14%
10 AM
31°
19%
11 AM
33°
25%
12 PM
34°
25%
1 PM
36°
12%
2 PM
37°
12%
3 PM
37°
17%
4 PM
36°
18%
5 PM
36°
18%
6 PM
38°
5%
7 PM
37°
5%
8 PM
35°
5%
9 PM
34°
5%
10 PM
31°
3%
11 PM
30°
3%
12 AM
29°
3%
1 AM
29°
3%
2 AM
28°
3%
3 AM
27°
3%
4 AM
26°
3%
5 AM
26°
3%
6 AM
23°
3%
7 AM
23°
3%
7-Day Forecast
Today
39° 23°
Mostly Clear with a 25% chance of rain.
Wed
40° 23°
Clear.
Thu
38° 21°
Mostly Clear with a 56% chance of rain.
Fri
37° 19°
Mostly Clear with a 57% chance of rain.
Sat
39° 19°
Drizzle, 42% chance.
Sun
38° 22°
Clear with a 21% chance of rain.
Mon
37° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 11% 4 mph SE 67%
9 AM 28° Clear 14% 6 mph SSE 57%
10 AM 31° Clear 19% 8 mph S 50%
11 AM 33° Clear 25% 9 mph S 44%
12 PM 34° Clear 25% 10 mph S 39%
1 PM 36° Clear 12% 10 mph S 35%
2 PM 37° Mostly Clear 12% 11 mph SSE 37%
3 PM 37° Partly Cloudy 17% 11 mph SSE 38%
4 PM 36° Partly Cloudy 18% 12 mph SSE 39%
5 PM 36° Partly Cloudy 18% 11 mph SSE 37%
6 PM 38° Partly Cloudy 5% 11 mph SSE 36%
7 PM 37° Mostly Clear 5% 9 mph SSE 36%
8 PM 35° Mostly Clear 5% 8 mph SSE 40%
9 PM 34° Mostly Clear 5% 8 mph S 44%
10 PM 31° Clear 3% 7 mph S 47%
11 PM 30° Clear 3% 7 mph S 50%
12 AM 29° Clear 3% 7 mph S 54%
1 AM 29° Clear 3% 7 mph S 58%
2 AM 28° Clear 3% 7 mph S 62%
3 AM 27° Clear 3% 7 mph S 66%
4 AM 26° Clear 3% 6 mph SSW 68%
5 AM 26° Clear 3% 6 mph S 71%
6 AM 23° Clear 3% 6 mph S 73%
7 AM 23° Clear 3% 6 mph S 74%
15-Day Forecast
Today
9/8
Mostly Clear
25%
23°
39°
Wed
9/9
Clear
3%
23°
40°
Thu
9/10
Mostly Clear
56%
21°
38°
Fri
9/11
Mostly Clear
57%
19°
37°
Sat
9/12
Drizzle
42%
19°
39°
Sun
9/13
Clear
21%
22°
38°
Mon
9/14
Clear
17%
23°
37°
Tue
9/15
Drizzle
43%
23°
37°
Wed
9/16
Clear
43%
21°
36°
Thu
9/17
Drizzle
51%
21°
37°
Fri
9/18
Drizzle
60%
22°
34°
Sat
9/19
Drizzle
60%
21°
34°
Sun
9/20
Drizzle
60%
21°
32°
Mon
9/21
Drizzle
60%
20°
32°
Tue
9/22
Drizzle
60%
19°
32°
49
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
49 AQI 8.8 µg/m³
O3
Ground-level ozone
44 AQI 48 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 49 Good 44 49
Thu 54 Moderate 54 46
Fri 50 Good 50 37
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 Sep 8, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE194 J/kg
MLCAPE182 J/kg
MUCAPE601 J/kg
SBCIN-316 J/kg
MLCIN-197 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear13 kt
0–1 km Shear14 kt
Eff. Shear16 kt
0–1 km SRH-67
0–3 km SRH-44
Eff. SRH-22
Storm Motion144° @ 23 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.0
Thermo & Levels
PWAT1.69 in
0–3 km LR5.5 °C/km
700–500 LR5.4 °C/km
Total Totals42.9
LCL904 hPa
LFC671 hPa
EL284 hPa
Freezing Lvl14,800 ft