Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Areal Flood Warning — Clark County, IN, Floyd County, IN, Harrison County, IN, Bullitt County, KY, Jefferson County, KY, Oldham County, KY 9:00 PM

Jefferson County, Kentucky, United States

Last updated: 8:34 PM CDT  ·  Refresh
26°C
Feels like 29°
Mostly Clear
▲ 31°  /  ▼ 21°
Wind
5 mph WSW
Humidity
87%
Dew Point
23°
Pressure
29.23 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
22%
Sunrise
6:36 AM
Sunset
9:01 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1296 J/kg) — isolated convective development possible. Sunrise: 6:36AM · Sunset: 9:01PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Areal Flood Warning
Clark County, IN, Floyd County, IN, Harrison County, IN, Bullitt County, KY, Jefferson County, KY, Oldham County, KY
Expires 9:00 PM
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
21%
10 PM
24°
4%
11 PM
24°
3%
12 AM
23°
3%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
21°
3%
7 AM
21°
3%
8 AM
21°
3%
9 AM
21°
3%
10 AM
23°
15%
11 AM
23°
3%
12 PM
24°
3%
1 PM
24°
3%
2 PM
24°
3%
3 PM
24°
3%
4 PM
25°
3%
5 PM
24°
3%
6 PM
25°
3%
7 PM
24°
3%
8 PM
23°
3%
7-Day Forecast
Tonight
31° 21°
Mostly Clear with a 21% chance of rain.
Wed
27° 17°
Partly Cloudy.
Thu
27° 14°
Clear.
Fri
23° 16°
Overcast.
Sat
28° 18°
Clear.
Sun
32° 21°
Thunderstorm, 70% chance.
Mon
34° 23°
Thunderstorm, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 21% 5 mph WSW 87%
10 PM 24° Mostly Clear 4% 5 mph WSW 88%
11 PM 24° Partly Cloudy 3% 5 mph W 88%
12 AM 23° Mostly Clear 3% 4 mph WNW 88%
1 AM 23° Clear 3% 4 mph NW 88%
2 AM 23° Mostly Clear 3% 3 mph NW 88%
3 AM 22° Mostly Clear 3% 3 mph NNW 89%
4 AM 22° Partly Cloudy 3% 3 mph NNW 90%
5 AM 22° Mostly Cloudy 3% 4 mph N 89%
6 AM 21° Mostly Cloudy 3% 6 mph N 88%
7 AM 21° Mostly Cloudy 3% 7 mph NNE 87%
8 AM 21° Mostly Cloudy 3% 8 mph NNE 84%
9 AM 21° Mostly Cloudy 3% 8 mph NNE 78%
10 AM 23° Partly Cloudy 15% 8 mph NNE 73%
11 AM 23° Partly Cloudy 3% 8 mph NNE 68%
12 PM 24° Partly Cloudy 3% 8 mph NNE 64%
1 PM 24° Partly Cloudy 3% 9 mph NNE 60%
2 PM 24° Partly Cloudy 3% 9 mph N 58%
3 PM 24° Partly Cloudy 3% 9 mph N 58%
4 PM 25° Partly Cloudy 3% 9 mph N 57%
5 PM 24° Partly Cloudy 3% 9 mph N 58%
6 PM 25° Mostly Cloudy 3% 9 mph N 61%
7 PM 24° Mostly Cloudy 3% 9 mph N 64%
8 PM 23° Mostly Cloudy 3% 8 mph N 66%
15-Day Forecast
Today
7/21
Mostly Clear
21%
21°
31°
Wed
7/22
Partly Cloudy
3%
17°
27°
Thu
7/23
Clear
3%
14°
27°
Fri
7/24
Overcast
18%
16°
23°
Sat
7/25
Clear
16%
18°
28°
Sun
7/26
Thunderstorm
70%
21°
32°
Mon
7/27
Thunderstorm
52%
23°
34°
Tue
7/28
Drizzle
53%
19°
31°
Wed
7/29
Drizzle
44%
18°
29°
Thu
7/30
Drizzle
44%
16°
29°
Fri
7/31
Drizzle
51%
16°
29°
Sat
8/1
Clear
60%
17°
30°
Sun
8/2
Drizzle
60%
18°
31°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
19°
31°
50
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
50 AQI 9.0 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 50 Good 31 50
Thu 28 Good 28 3
Fri 42 Good 42 7
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 Jul 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1244 J/kg
MLCAPE10 J/kg
MUCAPE1244 J/kg
SBCIN-121 J/kg
MLCIN0 J/kg
Lifted Index-3.2
Kinematics
0–6 km Shear45 kt
0–1 km Shear18 kt
Eff. Shear52 kt
0–1 km SRH-80
0–3 km SRH-103
Eff. SRH-103
Storm Motion265° @ 33 kt
0–1 km EHI-0.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index2.2
Thermo & Levels
PWAT1.05 in
0–3 km LR5.1 °C/km
700–500 LR5.5 °C/km
Total Totals37.4
LCL960 hPa
LFC848 hPa
EL166 hPa
Freezing Lvl15,965 ft