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

Polk County, East Tennessee, Tennessee, United States

Last updated: 7:29 PM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Cloudy
▲ 36°  /  ▼ 21°
Wind
4 mph SE
Humidity
80%
Dew Point
22°
Pressure
28.63 inHg
Visibility
10 mi
UV Index
0.9
Cloud Cover
79%
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 27°C. Precipitation is likely — peak probability 59% around 6 PM. Atmospheric instability is elevated (CAPE up to 3178 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
27°
48%
9 PM
27°
48%
10 PM
25°
39%
11 PM
24°
21%
12 AM
24°
21%
1 AM
23°
23%
2 AM
22°
6%
3 AM
22°
6%
4 AM
22°
15%
5 AM
22°
15%
6 AM
21°
15%
7 AM
21°
3%
8 AM
23°
22%
9 AM
26°
32%
10 AM
28°
33%
11 AM
31°
51%
12 PM
32°
51%
1 PM
33°
52%
2 PM
34°
56%
3 PM
34°
57%
4 PM
33°
57%
5 PM
32°
58%
6 PM
31°
58%
7 PM
29°
50%
7-Day Forecast
Tonight
36° 21°
Mostly Cloudy with a 48% chance of rain.
Thu
36° 21°
Mostly Cloudy with a 56% chance of rain.
Fri
37° 20°
Partly Cloudy with a 83% chance of rain.
Sat
34° 20°
Partly Cloudy with a 46% chance of rain.
Sun
34° 21°
Rain, 82% chance.
Mon
33° 20°
Rain, 82% chance.
Tue
32° 21°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Cloudy 48% 4 mph SE 80%
9 PM 27° Mostly Cloudy 48% 4 mph SE 81%
10 PM 25° Partly Cloudy 39% 5 mph SE 82%
11 PM 24° Partly Cloudy 21% 4 mph SE 83%
12 AM 24° Partly Cloudy 21% 3 mph SE 86%
1 AM 23° Partly Cloudy 23% 2 mph SE 89%
2 AM 22° Mostly Clear 6% 2 mph ESE 91%
3 AM 22° Mostly Clear 6% 2 mph E 91%
4 AM 22° Mostly Clear 15% 3 mph E 91%
5 AM 22° Partly Cloudy 15% 3 mph E 90%
6 AM 21° Partly Cloudy 15% 3 mph E 88%
7 AM 21° Mostly Cloudy 3% 3 mph E 86%
8 AM 23° Mostly Cloudy 22% 2 mph ENE 81%
9 AM 26° Partly Cloudy 32% 2 mph NE 73%
10 AM 28° Partly Cloudy 33% 3 mph NNE 65%
11 AM 31° Partly Cloudy 51% 3 mph N 59%
12 PM 32° Partly Cloudy 51% 4 mph N 55%
1 PM 33° Partly Cloudy 52% 4 mph N 50%
2 PM 34° Partly Cloudy 56% 4 mph NNE 51%
3 PM 34° Mostly Cloudy 57% 4 mph NE 56%
4 PM 33° Mostly Cloudy 57% 5 mph NE 62%
5 PM 32° Mostly Cloudy 58% 6 mph ENE 68%
6 PM 31° Overcast 58% 5 mph ENE 72%
7 PM 29° Drizzle 50% 4 mph NE 77%
15-Day Forecast
Today
7/1
Mostly Cloudy
48%
21°
36°
Thu
7/2
Mostly Cloudy
56%
21°
36°
Fri
7/3
Partly Cloudy
83%
20°
37°
Sat
7/4
Partly Cloudy
46%
20°
34°
Sun
7/5
Rain
82%
21°
34°
Mon
7/6
Rain
82%
20°
33°
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
90%
20°
37°
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
Today 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, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2360 J/kg
MLCAPE2951 J/kg
MUCAPE3231 J/kg
SBCIN-243 J/kg
MLCIN0 J/kg
Lifted Index-7.2
Kinematics
0–6 km Shear15 kt
0–1 km Shear8 kt
Eff. Shear10 kt
0–1 km SRH-17
0–3 km SRH-31
Eff. SRH-31
Storm Motion54° @ 22 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.7
Thermo & Levels
PWAT1.88 in
0–3 km LR5.1 °C/km
700–500 LR7.9 °C/km
Total Totals57.2
LCL900 hPa
LFC668 hPa
EL173 hPa
Freezing Lvl14,524 ft