Excessive Heat Watch 7:00 PM

Johnson County, Kansas, United States

Last updated: 7:44 AM CDT  ·  Refresh
27°C
Feels like 30°
Clear
▲ 38°  /  ▼ 26°
Wind
6 mph SSW
Humidity
82%
Dew Point
24°
Pressure
28.87 inHg
Visibility
9 mi
UV Index
4.2
Cloud Cover
9%
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 clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3157 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
27°
11%
8 AM
28°
29%
9 AM
30°
14%
10 AM
32°
14%
11 AM
33°
14%
12 PM
34°
7%
1 PM
36°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
5%
5 PM
38°
5%
6 PM
37°
5%
7 PM
35°
5%
8 PM
33°
10%
9 PM
32°
14%
10 PM
31°
23%
11 PM
31°
24%
12 AM
30°
24%
1 AM
29°
24%
2 AM
29°
25%
3 AM
29°
25%
4 AM
29°
15%
5 AM
27°
20%
6 AM
27°
9%
7-Day Forecast
Today
38° 26°
Mostly Clear with a 23% chance of rain.
Mon
40° 26°
Mostly Clear with a 49% chance of rain.
Tue
36° 24°
Partly Cloudy with a 51% chance of rain.
Wed
34° 25°
Partly Cloudy with a 52% chance of rain.
Thu
36° 25°
Rain, 64% chance.
Fri
35° 22°
Drizzle, 70% chance.
Sat
33° 22°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 11% 6 mph SSW 82%
8 AM 28° Clear 29% 6 mph SW 73%
9 AM 30° Clear 14% 6 mph SSW 66%
10 AM 32° Clear 14% 6 mph SSW 60%
11 AM 33° Clear 14% 7 mph SSW 55%
12 PM 34° Clear 7% 8 mph SSW 50%
1 PM 36° Mostly Clear 3% 8 mph SSW 46%
2 PM 37° Clear 3% 9 mph SSW 43%
3 PM 37° Mostly Clear 3% 10 mph SSW 41%
4 PM 37° Clear 5% 10 mph SSW 42%
5 PM 38° Clear 5% 10 mph SSW 44%
6 PM 37° Clear 5% 9 mph SSW 47%
7 PM 35° Clear 5% 9 mph S 51%
8 PM 33° Mostly Clear 10% 9 mph S 56%
9 PM 32° Partly Cloudy 14% 9 mph S 61%
10 PM 31° Partly Cloudy 23% 10 mph S 62%
11 PM 31° Partly Cloudy 24% 11 mph S 61%
12 AM 30° Partly Cloudy 24% 11 mph S 60%
1 AM 29° Partly Cloudy 24% 12 mph SSW 60%
2 AM 29° Partly Cloudy 25% 12 mph SSW 61%
3 AM 29° Partly Cloudy 25% 12 mph SSW 62%
4 AM 29° Partly Cloudy 15% 11 mph SSW 63%
5 AM 27° Partly Cloudy 20% 11 mph SSW 65%
6 AM 27° Mostly Clear 9% 11 mph SSW 67%
15-Day Forecast
Today
7/26
Mostly Clear
23%
26°
38°
Mon
7/27
Mostly Clear
49%
26°
40°
Tue
7/28
Partly Cloudy
51%
24°
36°
Wed
7/29
Partly Cloudy
52%
25°
34°
Thu
7/30
Rain
64%
25°
36°
Fri
7/31
Drizzle
70%
22°
35°
Sat
8/1
Clear
28%
22°
33°
Sun
8/2
Clear
18%
20°
34°
Mon
8/3
Drizzle
44%
21°
36°
Tue
8/4
Drizzle
51%
23°
37°
Wed
8/5
Drizzle
60%
24°
37°
Thu
8/6
Drizzle
60%
23°
36°
Fri
8/7
Drizzle
60%
23°
36°
Sat
8/8
Drizzle
60%
24°
37°
Sun
8/9
Drizzle
60%
25°
37°
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
SBCAPE2359 J/kg
MLCAPE1879 J/kg
MUCAPE2359 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear13 kt
0–1 km Shear10 kt
Eff. Shear24 kt
0–1 km SRH2
0–3 km SRH-2
Eff. SRH-2
Storm Motion225° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index20.3
Thermo & Levels
PWAT1.26 in
0–3 km LR5.0 °C/km
700–500 LR6.0 °C/km
Total Totals42.4
LCL937 hPa
LFC977 hPa
EL156 hPa
Freezing Lvl16,942 ft