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

Knox County, Kentucky, United States

Last updated: 11:22 PM CDT  ·  Refresh
23°C
Feels like 27°
Overcast
▲ 29°  /  ▼ 16°
Wind
3 mph SW
Humidity
97%
Dew Point
22°
Pressure
28.58 inHg
Visibility
7 mi
UV Index
0.0
Cloud Cover
87%
Sunrise
6:33 AM
Sunset
8:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Knox County is currently overcast at 23°C. Precipitation is likely — peak probability 78% around 2 AM. Atmospheric instability is elevated (CAPE up to 1022 J/kg) — isolated convective development possible. Sunrise: 6:33AM · Sunset: 8:50PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
Severe Thunderstorm Watch
Expires 12:00 AM
Areal Flood Watch
Expires 1:00 AM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
76%
1 AM
23°
69%
2 AM
23°
78%
3 AM
23°
60%
4 AM
23°
60%
5 AM
23°
56%
6 AM
22°
60%
7 AM
22°
67%
8 AM
22°
67%
9 AM
22°
42%
10 AM
23°
48%
11 AM
24°
54%
12 PM
25°
58%
1 PM
26°
34%
2 PM
28°
27%
3 PM
28°
27%
4 PM
28°
27%
5 PM
28°
28%
6 PM
27°
24%
7 PM
26°
21%
8 PM
26°
9%
9 PM
25°
9%
10 PM
24°
9%
11 PM
23°
9%
7-Day Forecast
Today
29° 16°
Mostly Cloudy with a 76% chance of rain.
Thu
29° 16°
Mostly Clear.
Fri
29° 16°
Mostly Cloudy with a 61% chance of rain.
Sat
29° 18°
Thunderstorm, 67% chance.
Sun
33° 19°
Rain, 70% chance.
Mon
34° 21°
Thunderstorm, 70% chance.
Tue
34° 19°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Overcast 76% 3 mph SW 97%
1 AM 23° Drizzle 69% 4 mph WSW 98%
2 AM 23° Rain 78% 5 mph WSW 99%
3 AM 23° Mostly Cloudy 60% 3 mph SW 98%
4 AM 23° Mostly Cloudy 60% 3 mph SW 98%
5 AM 23° Rain 56% 3 mph SW 98%
6 AM 22° Rain 60% 2 mph WSW 98%
7 AM 22° Mostly Cloudy 67% 2 mph W 98%
8 AM 22° Overcast 67% 3 mph WNW 97%
9 AM 22° Overcast 42% 3 mph WNW 94%
10 AM 23° Mostly Cloudy 48% 4 mph NW 91%
11 AM 24° Mostly Cloudy 54% 4 mph WNW 86%
12 PM 25° Mostly Cloudy 58% 4 mph WNW 78%
1 PM 26° Partly Cloudy 34% 5 mph W 70%
2 PM 28° Partly Cloudy 27% 6 mph W 64%
3 PM 28° Mostly Cloudy 27% 6 mph WNW 65%
4 PM 28° Mostly Cloudy 27% 7 mph WNW 65%
5 PM 28° Mostly Cloudy 28% 7 mph NW 66%
6 PM 27° Mostly Cloudy 24% 6 mph NW 70%
7 PM 26° Partly Cloudy 21% 6 mph NW 75%
8 PM 26° Partly Cloudy 9% 6 mph NNW 77%
9 PM 25° Partly Cloudy 9% 6 mph NNW 76%
10 PM 24° Partly Cloudy 9% 6 mph NNW 75%
11 PM 23° Partly Cloudy 9% 6 mph NNW 75%
15-Day Forecast
Today
7/22
Mostly Cloudy
76%
16°
29°
Thu
7/23
Mostly Clear
3%
16°
29°
Fri
7/24
Mostly Cloudy
61%
16°
29°
Sat
7/25
Thunderstorm
67%
18°
29°
Sun
7/26
Rain
70%
19°
33°
Mon
7/27
Thunderstorm
70%
21°
34°
Tue
7/28
Rain
63%
19°
34°
Wed
7/29
Drizzle
53%
16°
31°
Thu
7/30
Drizzle
44%
14°
30°
Fri
7/31
Drizzle
51%
14°
29°
Sat
8/1
Clear
60%
17°
31°
Sun
8/2
Drizzle
60%
17°
31°
Mon
8/3
Drizzle
60%
18°
31°
Tue
8/4
Drizzle
60%
19°
31°
Wed
8/5
Drizzle
60%
19°
32°
42
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
28 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 42 Good 28 42
Thu 32 Good 30 32
Fri 31 Good 30 31
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE777 J/kg
MLCAPE544 J/kg
MUCAPE777 J/kg
SBCIN-46 J/kg
MLCIN0 J/kg
Lifted Index-2.7
Kinematics
0–6 km Shear41 kt
0–1 km Shear21 kt
Eff. Shear41 kt
0–1 km SRH-63
0–3 km SRH-73
Eff. SRH-73
Storm Motion242° @ 35 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.1
Thermo & Levels
PWAT1.84 in
0–3 km LR4.9 °C/km
700–500 LR5.3 °C/km
Total Totals44.4
LCL961 hPa
LFC801 hPa
EL193 hPa
Freezing Lvl15,364 ft