Heat Advisory — 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, Archer, TX, Clay, TX 8:00 PM

Johnston County, Oklahoma, United States

Last updated: 12:57 AM CDT  ·  Refresh
27°C
Feels like 28°
Clear
▲ 38°  /  ▼ 21°
Wind
6 mph SSE
Humidity
53%
Dew Point
17°
Pressure
29.11 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
6:42 AM
Sunset
8:22 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 1760 J/kg) — isolated convective development possible. Sunrise: 6:42AM · Sunset: 8:22PM.

Alerts

Heat Advisory
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, Archer, TX, Clay, TX
Expires 8:00 PM
61 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
13%
1 AM
27°
13%
2 AM
26°
12%
3 AM
26°
4%
4 AM
25°
4%
5 AM
22°
4%
6 AM
21°
4%
7 AM
24°
4%
8 AM
27°
12%
9 AM
29°
13%
10 AM
31°
21%
11 AM
33°
22%
12 PM
34°
22%
1 PM
37°
31%
2 PM
38°
32%
3 PM
38°
32%
4 PM
38°
40%
5 PM
38°
41%
6 PM
38°
41%
7 PM
34°
42%
8 PM
32°
42%
9 PM
28°
35%
10 PM
27°
36%
11 PM
27°
37%
7-Day Forecast
Today
38° 21°
Mostly Clear with a 41% chance of rain.
Sat
40° 21°
Clear with a 41% chance of rain.
Sun
39° 20°
Clear.
Mon
38° 22°
Clear.
Tue
39° 23°
Clear.
Wed
40° 24°
Clear.
Thu
40° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 13% 6 mph SSE 53%
1 AM 27° Clear 13% 7 mph SSE 54%
2 AM 26° Clear 12% 7 mph S 56%
3 AM 26° Clear 4% 7 mph S 58%
4 AM 25° Clear 4% 7 mph SSW 61%
5 AM 22° Clear 4% 7 mph SSW 64%
6 AM 21° Partly Cloudy 4% 6 mph SSW 66%
7 AM 24° Clear 4% 8 mph SSW 62%
8 AM 27° Partly Cloudy 12% 10 mph SW 56%
9 AM 29° Mostly Clear 13% 11 mph SW 50%
10 AM 31° Clear 21% 11 mph SSW 44%
11 AM 33° Partly Cloudy 22% 11 mph SSW 37%
12 PM 34° Mostly Clear 22% 10 mph S 32%
1 PM 37° Clear 31% 10 mph S 30%
2 PM 38° Clear 32% 10 mph S 28%
3 PM 38° Clear 32% 11 mph SSE 26%
4 PM 38° Mostly Clear 40% 11 mph SSE 27%
5 PM 38° Mostly Clear 41% 11 mph SSE 28%
6 PM 38° Partly Cloudy 41% 11 mph SSE 29%
7 PM 34° Partly Cloudy 42% 8 mph SSE 39%
8 PM 32° Partly Cloudy 42% 8 mph SSE 48%
9 PM 28° Partly Cloudy 35% 10 mph ESE 57%
10 PM 27° Mostly Clear 36% 9 mph ESE 60%
11 PM 27° Mostly Clear 37% 8 mph SE 61%
15-Day Forecast
Today
8/7
Mostly Clear
41%
21°
38°
Sat
8/8
Clear
41%
21°
40°
Sun
8/9
Clear
13%
20°
39°
Mon
8/10
Clear
7%
22°
38°
Tue
8/11
Clear
8%
23°
39°
Wed
8/12
Clear
8%
24°
40°
Thu
8/13
Clear
8%
24°
40°
Fri
8/14
Rain
44%
22°
39°
Sat
8/15
Drizzle
44%
23°
38°
Sun
8/16
Drizzle
51%
24°
40°
Mon
8/17
Drizzle
60%
25°
39°
Tue
8/18
Drizzle
60%
25°
39°
Wed
8/19
Clear
25%
25°
39°
Thu
8/20
Clear
60%
25°
40°
Fri
8/21
Drizzle
60%
24°
39°
61
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
61 AQI 14.2 µg/m³
O3
Ground-level ozone
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 61 Moderate 47 61
Sat 47 Good 45 47
Sun 44 Good 44 43
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 Fri Aug 7, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE5 J/kg
MLCAPE475 J/kg
MUCAPE809 J/kg
SBCIN-796 J/kg
MLCIN0 J/kg
Lifted Index0.5
Kinematics
0–6 km Shear25 kt
0–1 km Shear14 kt
Eff. Shear44 kt
0–1 km SRH91
0–3 km SRH-10
Eff. SRH-99
Storm Motion277° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.1
Thermo & Levels
PWAT1.45 in
0–3 km LR5.4 °C/km
700–500 LR6.7 °C/km
Total Totals45.8
LCL848 hPa
LFC392 hPa
EL343 hPa
Freezing Lvl15,433 ft