Union County, East Tennessee, Tennessee, United States

Last updated: 8:30 PM CDT  ·  Refresh
18°C
Feels like 17°
Mostly Cloudy
▲ 21°  /  ▼ 14°
Wind
11 mph E
Humidity
84%
Dew Point
16°
Pressure
28.73 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
69%
Sunrise
7:38 AM
Sunset
7:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly cloudy at 18°C. Precipitation is likely — peak probability 90% around 12 AM. Sunrise: 7:38AM · Sunset: 7:05PM.

Alerts

No active alerts for this location.
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
50%
10 PM
18°
77%
11 PM
18°
78%
12 AM
18°
90%
1 AM
18°
87%
2 AM
18°
83%
3 AM
18°
87%
4 AM
18°
66%
5 AM
17°
64%
6 AM
16°
67%
7 AM
16°
71%
8 AM
15°
60%
9 AM
15°
60%
10 AM
14°
43%
11 AM
14°
44%
12 PM
14°
54%
1 PM
14°
70%
2 PM
17°
69%
3 PM
17°
69%
4 PM
18°
65%
5 PM
18°
55%
6 PM
18°
54%
7 PM
18°
54%
8 PM
18°
39%
7-Day Forecast
Tonight
21° 14°
Mostly Cloudy with a 50% chance of rain.
Sun
19° 14°
Rain, 90% chance.
Mon
27° 13°
Fog.
Tue
31° 12°
Fog.
Wed
32° 17°
Overcast.
Thu
30° 17°
Clear with a 51% chance of rain.
Fri
30° 9°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 18° Mostly Cloudy 50% 11 mph E 83%
10 PM 18° Mostly Cloudy 77% 11 mph E 85%
11 PM 18° Mostly Cloudy 78% 11 mph E 87%
12 AM 18° Heavy Rain 90% 11 mph E 89%
1 AM 18° Mostly Cloudy 87% 9 mph E 92%
2 AM 18° Mostly Cloudy 83% 8 mph E 93%
3 AM 18° Mostly Cloudy 87% 7 mph E 94%
4 AM 18° Mostly Cloudy 66% 5 mph E 95%
5 AM 17° Mostly Cloudy 64% 4 mph E 96%
6 AM 16° Overcast 67% 3 mph S 96%
7 AM 16° Overcast 71% 6 mph SW 95%
8 AM 15° Mostly Cloudy 60% 8 mph SW 94%
9 AM 15° Mostly Cloudy 60% 8 mph SW 92%
10 AM 14° Mostly Cloudy 43% 9 mph SW 91%
11 AM 14° Mostly Cloudy 44% 9 mph SW 91%
12 PM 14° Overcast 54% 8 mph SW 93%
1 PM 14° Rain 70% 8 mph SW 94%
2 PM 17° Rain 69% 8 mph SW 94%
3 PM 17° Rain 69% 8 mph SW 94%
4 PM 18° Rain 65% 8 mph SW 94%
5 PM 18° Rain 55% 8 mph SW 94%
6 PM 18° Rain 54% 8 mph WSW 94%
7 PM 18° Rain 54% 8 mph WSW 95%
8 PM 18° Overcast 39% 8 mph WSW 94%
15-Day Forecast
Today
10/10
Mostly Cloudy
50%
14°
21°
Sun
10/11
Rain
90%
14°
19°
Mon
10/12
Fog
7%
13°
27°
Tue
10/13
Fog
15%
12°
31°
Wed
10/14
Overcast
16%
17°
32°
Thu
10/15
Clear
51%
17°
30°
Fri
10/16
Drizzle
52%
9°
30°
Sat
10/17
Clear
28%
1°
18°
Sun
10/18
Clear
18%
-3°
14°
Mon
10/19
Clear
19%
-2°
19°
Tue
10/20
Clear
25%
2°
22°
Wed
10/21
Drizzle
60%
5°
24°
Thu
10/22
Clear
25%
6°
23°
Fri
10/23
Drizzle
60%
6°
22°
Sat
10/24
Clear
60%
6°
22°
41
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
11 AQI 2.1 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 41 Good 41 11
Mon 30 Good 30 7
Tue 41 Good 41 36
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Oct 10, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE28 J/kg
MUCAPE132 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index4.4
Kinematics
0–6 km Shear63 kt
0–1 km Shear32 kt
Eff. Shear21 kt
0–1 km SRH416
0–3 km SRH452
Eff. SRH53
Storm Motion193° @ 39 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.1
K-Index34.8
Thermo & Levels
PWAT1.40 in
0–3 km LR4.3 °C/km
700–500 LR5.6 °C/km
Total Totals46.6
LCL933 hPa
LFC—
EL—
Freezing Lvl13,766 ft