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, Harmon, OK, Greer, OK, Kiowa, OK, Jackson, OK, Tillman, OK, Comanche, OK, Stephens, OK, Garvin, OK, Murray, OK, Pontotoc, OK, Cotton, OK, Jefferson, OK, Carter, OK, Love, OK, Hardeman, TX, Foard, TX, Wilbarger, TX, Wichita, TX, Knox, TX, Baylor, TX, Archer, TX, Clay, TX 7:00 PM

Harper County, Oklahoma, United States

Last updated: 3:50 PM CDT  ·  Refresh
96°F
Feels like 97°
Mostly Clear
▲ 100°  /  ▼ 72°
Wind
14 mph S
Humidity
33%
Dew Point
65°
Pressure
27.82 inHg
Visibility
10 mi
UV Index
7.8
Cloud Cover
17%
Sunrise
7:18 AM
Sunset
7:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Harper County is currently mostly clear at 96°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1899 J/kg) — isolated convective development possible. Sunrise: 7:18AM · Sunset: 7:48PM.

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, Harmon, OK, Greer, OK, Kiowa, OK, Jackson, OK, Tillman, OK, Comanche, OK, Stephens, OK, Garvin, OK, Murray, OK, Pontotoc, OK, Cotton, OK, Jefferson, OK, Carter, OK, Love, OK, Hardeman, TX, Foard, TX, Wilbarger, TX, Wichita, TX, Knox, TX, Baylor, TX, Archer, TX, Clay, TX
Expires 7:00 PM
48 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
96°
11%
4 PM
99°
14%
5 PM
100°
13%
6 PM
98°
13%
7 PM
94°
24%
8 PM
89°
24%
9 PM
86°
29%
10 PM
85°
29%
11 PM
83°
23%
12 AM
82°
20%
1 AM
81°
19%
2 AM
80°
14%
3 AM
80°
8%
4 AM
79°
5%
5 AM
75°
3%
6 AM
74°
3%
7 AM
75°
3%
8 AM
78°
3%
9 AM
78°
3%
10 AM
84°
3%
11 AM
86°
3%
12 PM
88°
3%
1 PM
92°
3%
2 PM
92°
3%
7-Day Forecast
Today
100° 72°
Mostly Clear with a 29% chance of rain.
Mon
100° 74°
Mostly Clear with a 20% chance of rain.
Tue
100° 69°
Clear with a 66% chance of rain.
Wed
91° 57°
Partly Cloudy with a 29% chance of rain.
Thu
98° 73°
Clear.
Fri
98° 74°
Rain, 81% chance.
Sat
89° 67°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 96° Mostly Clear 11% 14 mph S 33%
4 PM 99° Partly Cloudy 14% 15 mph S 30%
5 PM 100° Partly Cloudy 13% 15 mph S 30%
6 PM 98° Partly Cloudy 13% 14 mph S 31%
7 PM 94° Partly Cloudy 24% 11 mph SSE 37%
8 PM 89° Mostly Clear 24% 9 mph SSE 44%
9 PM 86° Mostly Clear 29% 12 mph SE 51%
10 PM 85° Mostly Clear 29% 12 mph SSE 55%
11 PM 83° Mostly Clear 23% 14 mph SSE 57%
12 AM 82° Partly Cloudy 20% 16 mph SSE 59%
1 AM 81° Mostly Clear 19% 17 mph SSE 59%
2 AM 80° Mostly Clear 14% 16 mph S 60%
3 AM 80° Partly Cloudy 8% 15 mph S 59%
4 AM 79° Partly Cloudy 5% 15 mph S 59%
5 AM 75° Partly Cloudy 3% 14 mph S 59%
6 AM 74° Partly Cloudy 3% 14 mph S 60%
7 AM 75° Partly Cloudy 3% 14 mph SSW 57%
8 AM 78° Partly Cloudy 3% 15 mph SSW 53%
9 AM 78° Partly Cloudy 3% 16 mph SSW 49%
10 AM 84° Partly Cloudy 3% 17 mph SSW 46%
11 AM 86° Partly Cloudy 3% 17 mph SSW 43%
12 PM 88° Mostly Clear 3% 18 mph SSW 40%
1 PM 92° Mostly Clear 3% 18 mph SSW 38%
2 PM 92° Mostly Clear 3% 18 mph SSW 36%
15-Day Forecast
Today
9/13
Mostly Clear
29%
72°
100°
Mon
9/14
Mostly Clear
20%
74°
100°
Tue
9/15
Clear
66%
69°
100°
Wed
9/16
Partly Cloudy
29%
57°
91°
Thu
9/17
Clear
9%
73°
98°
Fri
9/18
Rain
81%
74°
98°
Sat
9/19
Drizzle
60%
67°
89°
Sun
9/20
Drizzle
60%
59°
84°
Mon
9/21
Drizzle
60%
55°
84°
Tue
9/22
Drizzle
60%
55°
84°
Wed
9/23
Drizzle
60%
64°
85°
Thu
9/24
Clear
60%
66°
88°
Fri
9/25
Drizzle
60%
66°
85°
Sat
9/26
Drizzle
60%
65°
85°
Sun
9/27
Drizzle
60%
65°
84°
48
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
27 AQI 5.0 µg/m³
O3
Ground-level ozone
Dominant
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 48 Good 48 27
Tue 41 Good 41 30
Wed 44 Good 44 31
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 Sun Sep 13, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2382 J/kg
MLCAPE2047 J/kg
MUCAPE2382 J/kg
SBCIN-19 J/kg
MLCIN-82 J/kg
Lifted Index-6.4
Kinematics
0–6 km Shear16 kt
0–1 km Shear10 kt
Eff. Shear15 kt
0–1 km SRH18
0–3 km SRH164
Eff. SRH164
Storm Motion127° @ 5 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.8
Thermo & Levels
PWAT1.64 in
0–3 km LR8.4 °C/km
700–500 LR7.2 °C/km
Total Totals53.4
LCL734 hPa
LFC687 hPa
EL148 hPa
Freezing Lvl14,429 ft