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: 4:14 AM CDT  ·  Refresh
28°C
Feels like 28°
Mostly Clear
▲ 42°  /  ▼ 25°
Wind
15 mph SSW
Humidity
44%
Dew Point
15°
Pressure
27.86 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
19%
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 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 609 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
28°
3%
5 AM
28°
7%
6 AM
24°
7%
7 AM
23°
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
41°
3%
5 PM
40°
3%
6 PM
42°
3%
7 PM
41°
3%
8 PM
39°
3%
9 PM
37°
3%
10 PM
34°
3%
11 PM
32°
3%
12 AM
32°
3%
1 AM
31°
3%
2 AM
31°
3%
3 AM
31°
3%
7-Day Forecast
Today
42° 25°
Clear.
Wed
43° 25°
Clear.
Thu
42° 24°
Mostly Clear with a 40% chance of rain.
Fri
40° 21°
Mostly Cloudy with a 57% chance of rain.
Sat
40° 23°
Rain, 29% chance.
Sun
41° 19°
Clear.
Mon
42° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Clear 3% 15 mph SSW 44%
5 AM 28° Mostly Clear 7% 16 mph SSW 45%
6 AM 24° Clear 7% 16 mph SSW 47%
7 AM 23° Clear 7% 16 mph SSW 47%
8 AM 26° Clear 7% 16 mph SW 43%
9 AM 28° Clear 7% 18 mph SW 37%
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% 19 mph SW 21%
2 PM 39° Clear 3% 18 mph SSW 18%
3 PM 40° Clear 3% 18 mph SSW 17%
4 PM 41° Clear 3% 18 mph SSW 16%
5 PM 40° Clear 3% 18 mph SSW 17%
6 PM 42° Mostly Clear 3% 18 mph SSW 18%
7 PM 41° Partly Cloudy 3% 17 mph SSW 20%
8 PM 39° Mostly Clear 3% 15 mph S 24%
9 PM 37° Mostly Clear 3% 14 mph S 27%
10 PM 34° Mostly Clear 3% 14 mph S 30%
11 PM 32° Mostly Clear 3% 15 mph S 33%
12 AM 32° Mostly Clear 3% 16 mph SSW 35%
1 AM 31° Mostly Clear 3% 16 mph SSW 37%
2 AM 31° Mostly Clear 3% 16 mph SSW 38%
3 AM 31° Mostly Clear 3% 16 mph SSW 39%
15-Day Forecast
Today
8/11
Clear
7%
25°
42°
Wed
8/12
Clear
3%
25°
43°
Thu
8/13
Mostly Clear
40%
24°
42°
Fri
8/14
Mostly Cloudy
57%
21°
40°
Sat
8/15
Rain
29%
23°
40°
Sun
8/16
Clear
17%
19°
41°
Mon
8/17
Clear
17%
22°
42°
Tue
8/18
Clear
18%
23°
43°
Wed
8/19
Clear
19%
24°
43°
Thu
8/20
Clear
36%
24°
42°
Fri
8/21
Drizzle
60%
26°
42°
Sat
8/22
Drizzle
60%
24°
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, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE40 J/kg
MLCAPE220 J/kg
MUCAPE334 J/kg
SBCIN-894 J/kg
MLCIN0 J/kg
Lifted Index-0.6
Kinematics
0–6 km Shear18 kt
0–1 km Shear22 kt
Eff. Shear—
0–1 km SRH67
0–3 km SRH184
Eff. SRH—
Storm Motion126° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index15.1
Thermo & Levels
PWAT1.16 in
0–3 km LR5.1 °C/km
700–500 LR8.3 °C/km
Total Totals51.3
LCL778 hPa
LFC514 hPa
EL424 hPa
Freezing Lvl14,698 ft