Excessive Heat Watch 7:00 PM

Johnson County, Kansas, United States

Last updated: 8:57 AM CDT  ·  Refresh
29°C
Feels like 32°
Mostly Clear
▲ 37°  /  ▼ 26°
Wind
6 mph SSW
Humidity
72%
Dew Point
24°
Pressure
28.87 inHg
Visibility
8 mi
UV Index
6.3
Cloud Cover
10%
Sunrise
6:15 AM
Sunset
8:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently mostly clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3147 J/kg) — isolated convective development possible. Sunrise: 6:15AM · Sunset: 8:35PM.

Alerts

Excessive Heat Watch
Expires 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
11%
9 AM
30°
14%
10 AM
32°
14%
11 AM
33°
14%
12 PM
34°
3%
1 PM
37°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
4%
5 PM
37°
5%
6 PM
37°
5%
7 PM
34°
8%
8 PM
33°
13%
9 PM
31°
14%
10 PM
31°
23%
11 PM
31°
23%
12 AM
30°
24%
1 AM
29°
24%
2 AM
29°
24%
3 AM
29°
25%
4 AM
28°
15%
5 AM
27°
13%
6 AM
27°
8%
7 AM
27°
9%
7-Day Forecast
Today
37° 26°
Clear with a 23% chance of rain.
Mon
40° 26°
Mostly Clear with a 49% chance of rain.
Tue
36° 24°
Mostly Cloudy with a 51% chance of rain.
Wed
33° 25°
Partly Cloudy with a 43% chance of rain.
Thu
34° 24°
Rain, 64% chance.
Fri
33° 22°
Drizzle, 70% chance.
Sat
32° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 11% 6 mph SSW 72%
9 AM 30° Clear 14% 6 mph SSW 64%
10 AM 32° Clear 14% 6 mph SSW 59%
11 AM 33° Clear 14% 7 mph SSW 54%
12 PM 34° Clear 3% 8 mph SSW 48%
1 PM 37° Clear 3% 8 mph SSW 45%
2 PM 37° Mostly Clear 3% 8 mph SSW 42%
3 PM 37° Mostly Clear 3% 10 mph SSW 40%
4 PM 37° Mostly Clear 4% 10 mph SSW 42%
5 PM 37° Clear 5% 10 mph SSW 44%
6 PM 37° Clear 5% 9 mph SSW 47%
7 PM 34° Partly Cloudy 8% 9 mph S 52%
8 PM 33° Mostly Clear 13% 9 mph S 57%
9 PM 31° Partly Cloudy 14% 9 mph S 62%
10 PM 31° Partly Cloudy 23% 10 mph S 61%
11 PM 31° Mostly Cloudy 23% 11 mph S 60%
12 AM 30° Mostly Cloudy 24% 12 mph SSW 59%
1 AM 29° Mostly Cloudy 24% 12 mph SSW 60%
2 AM 29° Mostly Cloudy 24% 12 mph SSW 61%
3 AM 29° Mostly Cloudy 25% 12 mph SSW 62%
4 AM 28° Mostly Cloudy 15% 11 mph SSW 64%
5 AM 27° Mostly Cloudy 13% 11 mph SSW 66%
6 AM 27° Partly Cloudy 8% 10 mph SSW 68%
7 AM 27° Partly Cloudy 9% 11 mph SSW 65%
15-Day Forecast
Today
7/26
Clear
23%
26°
37°
Mon
7/27
Mostly Clear
49%
26°
40°
Tue
7/28
Mostly Cloudy
51%
24°
36°
Wed
7/29
Partly Cloudy
43%
25°
33°
Thu
7/30
Rain
64%
24°
34°
Fri
7/31
Drizzle
70%
22°
33°
Sat
8/1
Clear
14%
22°
32°
Sun
8/2
Clear
18%
20°
33°
Mon
8/3
Clear
44%
21°
35°
Tue
8/4
Clear
51%
23°
37°
Wed
8/5
Drizzle
60%
23°
36°
Thu
8/6
Drizzle
60%
23°
35°
Fri
8/7
Drizzle
60%
22°
34°
Sat
8/8
Clear
60%
23°
36°
Sun
8/9
Drizzle
60%
24°
36°
55
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
55 AQI 11.6 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 55 Moderate 36 55
Tue 52 Moderate 35 52
Wed 51 Moderate 46 51
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 Jul 26, 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
SBCAPE2780 J/kg
MLCAPE1955 J/kg
MUCAPE2780 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear17 kt
0–1 km Shear8 kt
Eff. Shear24 kt
0–1 km SRH-5
0–3 km SRH-1
Eff. SRH-1
Storm Motion227° @ 19 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index21.8
Thermo & Levels
PWAT1.31 in
0–3 km LR5.6 °C/km
700–500 LR6.0 °C/km
Total Totals43.9
LCL916 hPa
LFC978 hPa
EL152 hPa
Freezing Lvl16,988 ft