Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM

Polk County, East Tennessee, Tennessee, United States

Last updated: 6:35 PM CDT  ·  Refresh
29°C
Feels like 34°
Mostly Cloudy
▲ 36°  /  ▼ 21°
Wind
4 mph ESE
Humidity
76%
Dew Point
22°
Pressure
28.64 inHg
Visibility
10 mi
UV Index
2.8
Cloud Cover
67%
Sunrise
6:27 AM
Sunset
8:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Polk County is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 68% around 6 PM. Atmospheric instability is elevated (CAPE up to 3126 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 8:56PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
46 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
39%
8 PM
28°
52%
9 PM
27°
47%
10 PM
25°
48%
11 PM
24°
34%
12 AM
24°
24%
1 AM
23°
24%
2 AM
22°
6%
3 AM
22°
15%
4 AM
22°
15%
5 AM
22°
15%
6 AM
21°
3%
7 AM
22°
3%
8 AM
23°
22%
9 AM
26°
33%
10 AM
29°
34%
11 AM
30°
51%
12 PM
31°
52%
1 PM
33°
53%
2 PM
35°
66%
3 PM
34°
66%
4 PM
33°
67%
5 PM
31°
67%
6 PM
30°
67%
7-Day Forecast
Tonight
36° 21°
Mostly Cloudy with a 48% chance of rain.
Thu
37° 21°
Drizzle, 65% chance.
Fri
37° 21°
Partly Cloudy with a 83% chance of rain.
Sat
34° 21°
Partly Cloudy with a 47% chance of rain.
Sun
34° 21°
Rain, 82% chance.
Mon
32° 20°
Heavy Rain, 82% chance.
Tue
32° 21°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 39% 4 mph ESE 76%
8 PM 28° Overcast 52% 4 mph SE 81%
9 PM 27° Mostly Cloudy 47% 4 mph SE 81%
10 PM 25° Mostly Cloudy 48% 4 mph SE 82%
11 PM 24° Partly Cloudy 34% 4 mph SE 84%
12 AM 24° Mostly Clear 24% 3 mph SE 87%
1 AM 23° Mostly Clear 24% 2 mph SE 89%
2 AM 22° Mostly Clear 6% 2 mph ESE 90%
3 AM 22° Mostly Clear 15% 2 mph E 90%
4 AM 22° Mostly Clear 15% 3 mph E 90%
5 AM 22° Partly Cloudy 15% 3 mph E 89%
6 AM 21° Partly Cloudy 3% 3 mph E 88%
7 AM 22° Fog 3% 3 mph E 86%
8 AM 23° Partly Cloudy 22% 2 mph ENE 80%
9 AM 26° Partly Cloudy 33% 2 mph NNE 72%
10 AM 29° Partly Cloudy 34% 3 mph NNE 64%
11 AM 30° Partly Cloudy 51% 4 mph N 58%
12 PM 31° Partly Cloudy 52% 4 mph N 54%
1 PM 33° Partly Cloudy 53% 4 mph N 50%
2 PM 35° Partly Cloudy 66% 4 mph NNE 51%
3 PM 34° Mostly Cloudy 66% 4 mph NE 57%
4 PM 33° Mostly Cloudy 67% 5 mph NE 63%
5 PM 31° Mostly Cloudy 67% 5 mph NE 68%
6 PM 30° Overcast 67% 5 mph NE 73%
15-Day Forecast
Today
7/1
Mostly Cloudy
48%
21°
36°
Thu
7/2
Drizzle
65%
21°
37°
Fri
7/3
Partly Cloudy
83%
21°
37°
Sat
7/4
Partly Cloudy
47%
21°
34°
Sun
7/5
Rain
82%
21°
34°
Mon
7/6
Heavy Rain
82%
20°
32°
Tue
7/7
Rain
82%
21°
32°
Wed
7/8
Rain
90%
21°
29°
Thu
7/9
Rain
90%
20°
29°
Fri
7/10
Rain
90%
20°
32°
Sat
7/11
Rain
77%
20°
36°
Sun
7/12
Rain
90%
19°
34°
Mon
7/13
Drizzle
60%
20°
32°
Tue
7/14
Drizzle
60%
20°
31°
Wed
7/15
Rain
90%
19°
31°
46
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
46 AQI 8.3 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 46 Good 31 46
Fri 48 Good 34 48
Sat 45 Good 37 45
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 1, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2976 J/kg
MLCAPE3242 J/kg
MUCAPE3717 J/kg
SBCIN-208 J/kg
MLCIN0 J/kg
Lifted Index-8.6
Kinematics
0–6 km Shear14 kt
0–1 km Shear8 kt
Eff. Shear9 kt
0–1 km SRH1
0–3 km SRH-47
Eff. SRH-47
Storm Motion48° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.5
Thermo & Levels
PWAT1.81 in
0–3 km LR6.0 °C/km
700–500 LR7.9 °C/km
Total Totals57.6
LCL877 hPa
LFC700 hPa
EL162 hPa
Freezing Lvl14,154 ft