Extreme Heat Warning — Miami, KS, Linn, KS, Saline, MO, Howard, MO, Cass, MO, Johnson, MO, Pettis, MO, Cooper, MO, Bates, MO, Henry, MO 8:00 PM

Johnson County, Missouri, United States

Last updated: 5:13 AM CDT  ·  Refresh
26°C
Feels like 26°
Clear
▲ 35°  /  ▼ 26°
Wind
9 mph SSW
Humidity
69%
Dew Point
20°
Pressure
29.09 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
4%
Sunrise
6:25 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2993 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 8:14PM.

Alerts

Extreme Heat Warning
Miami, KS, Linn, KS, Saline, MO, Howard, MO, Cass, MO, Johnson, MO, Pettis, MO, Cooper, MO, Bates, MO, Henry, MO
Expires 8:00 PM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
6 AM
23°
14%
7 AM
23°
14%
8 AM
25°
14%
9 AM
27°
14%
10 AM
28°
14%
11 AM
29°
14%
12 PM
31°
7%
1 PM
32°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
35°
4%
5 PM
34°
5%
6 PM
34°
5%
7 PM
33°
5%
8 PM
32°
5%
9 PM
31°
8%
10 PM
29°
8%
11 PM
29°
8%
12 AM
28°
8%
1 AM
28°
8%
2 AM
28°
9%
3 AM
28°
9%
4 AM
28°
9%
7-Day Forecast
Today
35° 26°
Mostly Clear.
Wed
38° 26°
Mostly Clear with a 23% chance of rain.
Thu
36° 24°
Mostly Clear with a 38% chance of rain.
Fri
37° 22°
Clear.
Sat
39° 25°
Clear.
Sun
36° 23°
Partly Cloudy.
Mon
34° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 3% 9 mph SSW 69%
6 AM 23° Clear 14% 10 mph SSW 67%
7 AM 23° Clear 14% 10 mph SSW 69%
8 AM 25° Mostly Clear 14% 12 mph SSW 66%
9 AM 27° Partly Cloudy 14% 14 mph SW 63%
10 AM 28° Partly Cloudy 14% 15 mph SW 60%
11 AM 29° Clear 14% 15 mph SW 56%
12 PM 31° Clear 7% 15 mph SW 52%
1 PM 32° Clear 3% 15 mph SW 49%
2 PM 34° Mostly Clear 3% 14 mph SW 48%
3 PM 34° Partly Cloudy 3% 13 mph SW 46%
4 PM 35° Partly Cloudy 4% 13 mph SW 46%
5 PM 34° Partly Cloudy 5% 12 mph SSW 49%
6 PM 34° Partly Cloudy 5% 11 mph SSW 52%
7 PM 33° Partly Cloudy 5% 10 mph SSW 55%
8 PM 32° Partly Cloudy 5% 9 mph S 56%
9 PM 31° Partly Cloudy 8% 9 mph S 58%
10 PM 29° Partly Cloudy 8% 9 mph S 58%
11 PM 29° Partly Cloudy 8% 10 mph S 58%
12 AM 28° Partly Cloudy 8% 11 mph SSW 57%
1 AM 28° Partly Cloudy 8% 11 mph SSW 56%
2 AM 28° Partly Cloudy 9% 12 mph SSW 56%
3 AM 28° Partly Cloudy 9% 12 mph SSW 57%
4 AM 28° Partly Cloudy 9% 12 mph SSW 58%
15-Day Forecast
Today
8/11
Mostly Clear
14%
26°
35°
Wed
8/12
Mostly Clear
23%
26°
38°
Thu
8/13
Mostly Clear
38%
24°
36°
Fri
8/14
Clear
15%
22°
37°
Sat
8/15
Clear
15%
25°
39°
Sun
8/16
Partly Cloudy
18%
23°
36°
Mon
8/17
Clear
15%
21°
34°
Tue
8/18
Clear
34%
23°
40°
Wed
8/19
Clear
35%
23°
40°
Thu
8/20
Drizzle
45%
25°
41°
Fri
8/21
Drizzle
60%
22°
41°
Sat
8/22
Drizzle
60%
22°
37°
Sun
8/23
Drizzle
60%
22°
37°
Mon
8/24
Drizzle
60%
21°
35°
Tue
8/25
Drizzle
60%
21°
35°
43
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
43 AQI 7.8 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 37 43
Wed 35 Good 35 28
Thu 43 Good 33 43
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
SBCAPE727 J/kg
MLCAPE1386 J/kg
MUCAPE1680 J/kg
SBCIN-731 J/kg
MLCIN0 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear8 kt
0–1 km Shear20 kt
Eff. Shear—
0–1 km SRH146
0–3 km SRH143
Eff. SRH—
Storm Motion347° @ 6 kt
0–1 km EHI0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index28.6
Thermo & Levels
PWAT1.46 in
0–3 km LR4.0 °C/km
700–500 LR8.1 °C/km
Total Totals51.3
LCL913 hPa
LFC620 hPa
EL218 hPa
Freezing Lvl14,606 ft