Tornado Watch 8:00 PM

Union County, New Jersey, United States

Last updated: 7:59 PM CDT  ·  Refresh
23°C
Feels like 27°
Overcast
▲ 27°  /  ▼ 21°
Wind
6 mph S
Humidity
94%
Dew Point
22°
Pressure
29.58 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
91%
Sunrise
5:44 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently overcast at 23°C. Precipitation is likely — peak probability 71% around 8 PM. Atmospheric instability is elevated (CAPE up to 1384 J/kg) — isolated convective development possible. Sunrise: 5:44AM · Sunset: 8:22PM.

Alerts

Tornado Watch
Expires 8:00 PM
74 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
70%
9 PM
23°
57%
10 PM
23°
43%
11 PM
23°
37%
12 AM
23°
38%
1 AM
23°
50%
2 AM
23°
39%
3 AM
23°
40%
4 AM
21°
44%
5 AM
21°
26%
6 AM
22°
26%
7 AM
22°
18%
8 AM
23°
18%
9 AM
24°
13%
10 AM
26°
8%
11 AM
26°
8%
12 PM
26°
8%
1 PM
26°
8%
2 PM
27°
9%
3 PM
27°
9%
4 PM
28°
9%
5 PM
27°
3%
6 PM
27°
3%
7 PM
26°
3%
7-Day Forecast
Tonight
27° 21°
Overcast with a 70% chance of rain.
Wed
28° 20°
Partly Cloudy with a 39% chance of rain.
Thu
28° 17°
Mostly Clear.
Fri
28° 17°
Partly Cloudy.
Sat
27° 18°
Partly Cloudy.
Sun
29° 18°
Drizzle, 70% chance.
Mon
30° 19°
Drizzle, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Overcast 70% 6 mph S 94%
9 PM 23° Mostly Cloudy 57% 9 mph SSW 93%
10 PM 23° Mostly Cloudy 43% 9 mph SW 93%
11 PM 23° Mostly Cloudy 37% 8 mph SSW 94%
12 AM 23° Overcast 38% 8 mph SW 95%
1 AM 23° Overcast 50% 8 mph SSW 96%
2 AM 23° Mostly Cloudy 39% 10 mph SW 95%
3 AM 23° Overcast 40% 10 mph SW 94%
4 AM 21° Mostly Cloudy 44% 10 mph SW 92%
5 AM 21° Mostly Cloudy 26% 9 mph SW 90%
6 AM 22° Mostly Cloudy 26% 9 mph SW 88%
7 AM 22° Partly Cloudy 18% 9 mph SW 86%
8 AM 23° Partly Cloudy 18% 9 mph WSW 81%
9 AM 24° Mostly Cloudy 13% 9 mph WSW 75%
10 AM 26° Partly Cloudy 8% 9 mph WSW 69%
11 AM 26° Mostly Clear 8% 10 mph WSW 65%
12 PM 26° Mostly Clear 8% 10 mph W 61%
1 PM 26° Mostly Clear 8% 10 mph W 57%
2 PM 27° Mostly Clear 9% 10 mph W 55%
3 PM 27° Mostly Clear 9% 10 mph WSW 53%
4 PM 28° Mostly Clear 9% 10 mph WSW 52%
5 PM 27° Mostly Clear 3% 9 mph W 54%
6 PM 27° Mostly Clear 3% 8 mph W 56%
7 PM 26° Mostly Clear 3% 8 mph W 59%
15-Day Forecast
Today
7/21
Overcast
70%
21°
27°
Wed
7/22
Partly Cloudy
39%
20°
28°
Thu
7/23
Mostly Clear
3%
17°
28°
Fri
7/24
Partly Cloudy
6%
17°
28°
Sat
7/25
Partly Cloudy
8%
18°
27°
Sun
7/26
Drizzle
70%
18°
29°
Mon
7/27
Drizzle
71%
19°
30°
Tue
7/28
Rain
63%
19°
28°
Wed
7/29
Rain
69%
21°
28°
Thu
7/30
Drizzle
44%
18°
28°
Fri
7/31
Drizzle
60%
19°
29°
Sat
8/1
Drizzle
60%
21°
28°
Sun
8/2
Drizzle
60%
21°
28°
Mon
8/3
Drizzle
60%
21°
28°
Tue
8/4
Drizzle
60%
22°
29°
74
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
74 AQI 21.4 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 74 Moderate 37 74
Thu 40 Good 40 28
Fri 45 Good 45 44
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
SBCAPE621 J/kg
MLCAPE889 J/kg
MUCAPE1222 J/kg
SBCIN-68 J/kg
MLCIN0 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear40 kt
0–1 km Shear13 kt
Eff. Shear38 kt
0–1 km SRH38
0–3 km SRH9
Eff. SRH9
Storm Motion220° @ 35 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell0.2
K-Index33.5
Thermo & Levels
PWAT2.04 in
0–3 km LR4.8 °C/km
700–500 LR6.2 °C/km
Total Totals48.2
LCL984 hPa
LFC754 hPa
EL234 hPa
Freezing Lvl14,718 ft