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

Harper County, Oklahoma, United States

Last updated: 5:21 AM CDT  ·  Refresh
27°C
Feels like 28°
Mostly Clear
▲ 42°  /  ▼ 25°
Wind
15 mph SSW
Humidity
46%
Dew Point
15°
Pressure
27.86 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
16%
Sunrise
6:52 AM
Sunset
8:34 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Harper County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 653 J/kg) — isolated convective development possible. Sunrise: 6:52AM · Sunset: 8:34PM.

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
58 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
6 AM
24°
7%
7 AM
24°
7%
8 AM
26°
7%
9 AM
28°
7%
10 AM
31°
7%
11 AM
33°
7%
12 PM
35°
3%
1 PM
37°
3%
2 PM
39°
3%
3 PM
40°
3%
4 PM
40°
3%
5 PM
39°
3%
6 PM
42°
3%
7 PM
41°
3%
8 PM
38°
3%
9 PM
37°
3%
10 PM
34°
3%
11 PM
33°
3%
12 AM
31°
3%
1 AM
31°
3%
2 AM
31°
3%
3 AM
30°
3%
4 AM
29°
3%
7-Day Forecast
Today
42° 25°
Clear.
Wed
43° 25°
Mostly Clear.
Thu
42° 24°
Mostly Clear with a 38% chance of rain.
Fri
38° 21°
Mostly Cloudy with a 51% chance of rain.
Sat
39° 23°
Mostly Clear with a 29% chance of rain.
Sun
39° 21°
Mostly Cloudy.
Mon
40° 22°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 15 mph SSW 46%
6 AM 24° Clear 7% 16 mph SSW 46%
7 AM 24° Clear 7% 16 mph SSW 46%
8 AM 26° Clear 7% 16 mph SW 42%
9 AM 28° Clear 7% 18 mph SW 36%
10 AM 31° Clear 7% 19 mph SW 32%
11 AM 33° Clear 7% 19 mph SW 28%
12 PM 35° Clear 3% 19 mph SW 24%
1 PM 37° Clear 3% 18 mph SW 20%
2 PM 39° Clear 3% 18 mph SSW 18%
3 PM 40° Clear 3% 18 mph SSW 17%
4 PM 40° Clear 3% 18 mph SSW 16%
5 PM 39° Clear 3% 18 mph SSW 17%
6 PM 42° Mostly Clear 3% 17 mph SSW 18%
7 PM 41° Mostly Clear 3% 16 mph SSW 20%
8 PM 38° Clear 3% 15 mph S 24%
9 PM 37° Clear 3% 14 mph S 28%
10 PM 34° Clear 3% 14 mph S 31%
11 PM 33° Clear 3% 15 mph S 33%
12 AM 31° Clear 3% 16 mph S 36%
1 AM 31° Clear 3% 16 mph SSW 37%
2 AM 31° Clear 3% 16 mph SSW 38%
3 AM 30° Clear 3% 15 mph SSW 39%
4 AM 29° Clear 3% 15 mph SSW 41%
15-Day Forecast
Today
8/11
Clear
7%
25°
42°
Wed
8/12
Mostly Clear
3%
25°
43°
Thu
8/13
Mostly Clear
38%
24°
42°
Fri
8/14
Mostly Cloudy
51%
21°
38°
Sat
8/15
Mostly Clear
29%
23°
39°
Sun
8/16
Mostly Cloudy
18%
21°
39°
Mon
8/17
Partly Cloudy
18%
22°
40°
Tue
8/18
Partly Cloudy
15%
22°
41°
Wed
8/19
Mostly Clear
15%
24°
42°
Thu
8/20
Clear
32%
24°
41°
Fri
8/21
Drizzle
60%
26°
41°
Sat
8/22
Drizzle
60%
25°
39°
Sun
8/23
Clear
60%
24°
38°
Mon
8/24
Drizzle
60%
25°
38°
Tue
8/25
Drizzle
60%
24°
37°
58
Moderate
U.S. Air Quality Index · Dominant: O3
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
45 AQI 8.1 µg/m³
O3
Ground-level ozone
Dominant
58 AQI 57 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 58 Moderate 58 45
Wed 46 Good 46 37
Thu 54 Moderate 48 54
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 Aug 11, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE11 J/kg
MLCAPE58 J/kg
MUCAPE93 J/kg
SBCIN-883 J/kg
MLCIN0 J/kg
Lifted Index-0.3
Kinematics
0–6 km Shear13 kt
0–1 km Shear21 kt
Eff. Shear—
0–1 km SRH57
0–3 km SRH261
Eff. SRH—
Storm Motion140° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index17.2
Thermo & Levels
PWAT1.04 in
0–3 km LR5.1 °C/km
700–500 LR8.1 °C/km
Total Totals49.4
LCL787 hPa
LFC515 hPa
EL452 hPa
Freezing Lvl14,436 ft