Severe Thunderstorm Watch 12:00 AM Areal Flood Watch 1:00 AM

Johnson County, Kentucky, United States

Last updated: 11:17 PM CDT  ·  Refresh
23°C
Feels like 27°
Mostly Clear
▲ 27°  /  ▼ 15°
Wind
5 mph WSW
Humidity
96%
Dew Point
22°
Pressure
28.92 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
30%
Sunrise
6:26 AM
Sunset
8:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 970 J/kg) — isolated convective development possible. Sunrise: 6:26AM · Sunset: 8:48PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
Areal Flood Watch
Expires 1:00 AM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
12%
1 AM
23°
20%
2 AM
23°
17%
3 AM
22°
18%
4 AM
22°
22%
5 AM
21°
33%
6 AM
20°
42%
7 AM
20°
43%
8 AM
21°
43%
9 AM
22°
44%
10 AM
23°
45%
11 AM
23°
36%
12 PM
24°
28%
1 PM
25°
18%
2 PM
27°
15%
3 PM
27°
19%
4 PM
27°
15%
5 PM
27°
19%
6 PM
27°
18%
7 PM
26°
5%
8 PM
25°
5%
9 PM
24°
5%
10 PM
23°
5%
11 PM
22°
5%
7-Day Forecast
Today
27° 15°
Mostly Cloudy with a 44% chance of rain.
Thu
28° 15°
Mostly Clear.
Fri
28° 17°
Mostly Cloudy with a 43% chance of rain.
Sat
31° 18°
Drizzle, 54% chance.
Sun
33° 19°
Rain, 70% chance.
Mon
35° 21°
Thunderstorm, 70% chance.
Tue
36° 18°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 12% 5 mph WSW 96%
1 AM 23° Mostly Clear 20% 5 mph WSW 96%
2 AM 23° Mostly Clear 17% 4 mph WSW 97%
3 AM 22° Mostly Clear 18% 4 mph WSW 97%
4 AM 22° Mostly Clear 22% 3 mph W 97%
5 AM 21° Partly Cloudy 33% 3 mph W 97%
6 AM 20° Partly Cloudy 42% 3 mph W 96%
7 AM 20° Mostly Cloudy 43% 3 mph WNW 96%
8 AM 21° Overcast 43% 4 mph NW 93%
9 AM 22° Overcast 44% 4 mph NNW 86%
10 AM 23° Mostly Cloudy 45% 4 mph NNW 80%
11 AM 23° Mostly Cloudy 36% 4 mph NNW 75%
12 PM 24° Mostly Cloudy 28% 4 mph NNW 72%
1 PM 25° Partly Cloudy 18% 4 mph NNW 68%
2 PM 27° Partly Cloudy 15% 5 mph NNW 64%
3 PM 27° Partly Cloudy 19% 6 mph NNW 61%
4 PM 27° Mostly Cloudy 15% 7 mph NNW 59%
5 PM 27° Mostly Cloudy 19% 7 mph NNW 58%
6 PM 27° Mostly Cloudy 18% 7 mph NNW 60%
7 PM 26° Overcast 5% 7 mph NNW 62%
8 PM 25° Overcast 5% 7 mph N 64%
9 PM 24° Overcast 5% 7 mph N 65%
10 PM 23° Overcast 5% 7 mph N 65%
11 PM 22° Overcast 5% 7 mph N 66%
15-Day Forecast
Today
7/22
Mostly Cloudy
44%
15°
27°
Thu
7/23
Mostly Clear
5%
15°
28°
Fri
7/24
Mostly Cloudy
43%
17°
28°
Sat
7/25
Drizzle
54%
18°
31°
Sun
7/26
Rain
70%
19°
33°
Mon
7/27
Thunderstorm
70%
21°
35°
Tue
7/28
Rain
63%
18°
36°
Wed
7/29
Drizzle
63%
16°
31°
Thu
7/30
Drizzle
44%
14°
29°
Fri
7/31
Drizzle
51%
14°
29°
Sat
8/1
Drizzle
60%
16°
31°
Sun
8/2
Drizzle
60%
17°
32°
Mon
8/3
Drizzle
60%
18°
32°
Tue
8/4
Drizzle
60%
19°
31°
Wed
8/5
Drizzle
60%
19°
32°
31
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
30 AQI 5.5 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 31 Good 31 30
Thu 27 Good 27 17
Fri 38 Good 38 22
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 Wed Jul 22, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE681 J/kg
MLCAPE324 J/kg
MUCAPE808 J/kg
SBCIN-48 J/kg
MLCIN0 J/kg
Lifted Index-3.2
Kinematics
0–6 km Shear40 kt
0–1 km Shear20 kt
Eff. Shear43 kt
0–1 km SRH-55
0–3 km SRH-82
Eff. SRH-82
Storm Motion243° @ 35 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index22.8
Thermo & Levels
PWAT1.31 in
0–3 km LR5.0 °C/km
700–500 LR5.6 °C/km
Total Totals41.2
LCL962 hPa
LFC823 hPa
EL191 hPa
Freezing Lvl15,243 ft