Flash Flood Warning — Mercer County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA 9:30 PM

Mercer County, New Jersey, United States

Last updated: 9:08 PM CDT  ·  Refresh
19°C
Feels like 17°
Mostly Cloudy
▲ 26°  /  ▼ 16°
Wind
13 mph NNE
Humidity
90%
Dew Point
18°
Pressure
29.85 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
80%
Sunrise
6:14 AM
Sunset
7:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently mostly cloudy at 19°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:14AM · Sunset: 7:48PM.

Alerts

Flash Flood Warning
Mercer County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
Expires 9:30 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
24%
11 PM
18°
25%
12 AM
18°
37%
1 AM
18°
36%
2 AM
17°
28%
3 AM
17°
14%
4 AM
17°
15%
5 AM
16°
15%
6 AM
16°
7%
7 AM
16°
7%
8 AM
17°
3%
9 AM
19°
3%
10 AM
20°
3%
11 AM
22°
3%
12 PM
23°
3%
1 PM
24°
3%
2 PM
24°
3%
3 PM
24°
3%
4 PM
24°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
24°
3%
8 PM
23°
3%
9 PM
21°
13%
7-Day Forecast
Tonight
26° 16°
Mostly Cloudy with a 24% chance of rain.
Fri
26° 16°
Partly Cloudy with a 36% chance of rain.
Sat
24° 18°
Rain, 90% chance.
Sun
29° 18°
Mostly Cloudy with a 69% chance of rain.
Mon
28° 17°
Clear.
Tue
28° 17°
Rain, 61% chance.
Wed
30° 18°
Drizzle, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 19° Mostly Cloudy 24% 13 mph NNE 90%
11 PM 18° Mostly Cloudy 25% 10 mph N 89%
12 AM 18° Mostly Cloudy 37% 10 mph N 89%
1 AM 18° Mostly Cloudy 36% 9 mph N 90%
2 AM 17° Mostly Cloudy 28% 9 mph N 90%
3 AM 17° Partly Cloudy 14% 8 mph N 89%
4 AM 17° Partly Cloudy 15% 7 mph N 88%
5 AM 16° Mostly Cloudy 15% 8 mph N 87%
6 AM 16° Mostly Cloudy 7% 8 mph N 85%
7 AM 16° Mostly Cloudy 7% 8 mph N 82%
8 AM 17° Mostly Cloudy 3% 8 mph N 79%
9 AM 19° Partly Cloudy 3% 8 mph N 74%
10 AM 20° Partly Cloudy 3% 8 mph N 69%
11 AM 22° Mostly Clear 3% 8 mph N 64%
12 PM 23° Partly Cloudy 3% 7 mph NNE 61%
1 PM 24° Partly Cloudy 3% 6 mph NNE 59%
2 PM 24° Mostly Cloudy 3% 6 mph NNE 56%
3 PM 24° Partly Cloudy 3% 5 mph NNE 56%
4 PM 24° Partly Cloudy 3% 5 mph NE 57%
5 PM 26° Partly Cloudy 3% 5 mph NE 57%
6 PM 25° Mostly Clear 3% 4 mph NE 62%
7 PM 24° Mostly Clear 3% 4 mph NE 66%
8 PM 23° Clear 3% 4 mph ENE 71%
9 PM 21° Mostly Clear 13% 3 mph ESE 75%
15-Day Forecast
Today
8/20
Mostly Cloudy
24%
16°
26°
Fri
8/21
Partly Cloudy
36%
16°
26°
Sat
8/22
Rain
90%
18°
24°
Sun
8/23
Mostly Cloudy
69%
18°
29°
Mon
8/24
Clear
8%
17°
28°
Tue
8/25
Rain
61%
17°
28°
Wed
8/26
Drizzle
71%
18°
30°
Thu
8/27
Rain
82%
18°
28°
Fri
8/28
Rain
68%
19°
30°
Sat
8/29
Rain
68%
19°
30°
Sun
8/30
Drizzle
90%
19°
31°
Mon
8/31
Drizzle
60%
19°
31°
Tue
9/1
Drizzle
60%
19°
28°
Wed
9/2
Drizzle
60%
18°
28°
Thu
9/3
Drizzle
60%
18°
27°
37
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
37 AQI 6.7 µg/m³
O3
Ground-level ozone
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 33 37
Sat 44 Good 44 37
Sun 47 Good 22 47
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 Thu Aug 20, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE12 J/kg
MUCAPE216 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index5.5
Kinematics
0–6 km Shear48 kt
0–1 km Shear6 kt
Eff. Shear39 kt
0–1 km SRH49
0–3 km SRH344
Eff. SRH237
Storm Motion278° @ 27 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.0
K-Index36.2
Thermo & Levels
PWAT2.17 in
0–3 km LR3.4 °C/km
700–500 LR5.6 °C/km
Total Totals46.0
LCL994 hPa
LFC—
EL—
Freezing Lvl14,475 ft