Mercer County, New Jersey, United States

Last updated: 3:34 AM CDT  ·  Refresh
3°C
Feels like 1°
Mostly Clear
▲ 17°  /  ▼ 2°
Wind
3 mph NW
Humidity
72%
Dew Point
0°
Pressure
30.36 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
25%
Sunrise
7:19 AM
Sunset
6:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently mostly clear at 3°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:19AM · Sunset: 6:05PM.

Alerts

No active alerts for this location.
24 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
3°
3%
5 AM
3°
3%
6 AM
3°
3%
7 AM
3°
3%
8 AM
4°
3%
9 AM
7°
3%
10 AM
10°
3%
11 AM
12°
3%
12 PM
13°
3%
1 PM
16°
3%
2 PM
17°
3%
3 PM
17°
3%
4 PM
17°
3%
5 PM
15°
3%
6 PM
13°
3%
7 PM
12°
3%
8 PM
11°
3%
9 PM
8°
3%
10 PM
8°
3%
11 PM
7°
3%
12 AM
7°
3%
1 AM
7°
3%
2 AM
6°
3%
3 AM
6°
3%
7-Day Forecast
Today
17° 2°
Clear.
Sun
21° 5°
Clear.
Mon
22° 5°
Fog.
Tue
18° 7°
Mostly Clear.
Wed
18° 6°
Clear.
Thu
20° 7°
Clear.
Fri
26° 9°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 3° Mostly Clear 3% 3 mph NW 72%
5 AM 3° Partly Cloudy 3% 4 mph NW 69%
6 AM 3° Mostly Clear 3% 4 mph NNW 71%
7 AM 3° Mostly Clear 3% 4 mph NNW 72%
8 AM 4° Mostly Clear 3% 3 mph NNW 70%
9 AM 7° Clear 3% 3 mph N 63%
10 AM 10° Clear 3% 3 mph N 57%
11 AM 12° Clear 3% 2 mph NNW 51%
12 PM 13° Clear 3% 2 mph NW 46%
1 PM 16° Clear 3% 2 mph W 41%
2 PM 17° Clear 3% 2 mph W 39%
3 PM 17° Clear 3% 2 mph W 40%
4 PM 17° Clear 3% 2 mph W 41%
5 PM 15° Clear 3% 3 mph W 43%
6 PM 13° Clear 3% 2 mph WSW 47%
7 PM 12° Clear 3% 3 mph SW 50%
8 PM 11° Clear 3% 3 mph SW 54%
9 PM 8° Clear 3% 3 mph SW 56%
10 PM 8° Clear 3% 3 mph SW 58%
11 PM 7° Clear 3% 3 mph SW 61%
12 AM 7° Clear 3% 3 mph WSW 63%
1 AM 7° Clear 3% 3 mph WSW 66%
2 AM 6° Clear 3% 3 mph W 68%
3 AM 6° Clear 3% 3 mph W 70%
15-Day Forecast
Today
10/24
Clear
3%
2°
17°
Sun
10/25
Clear
3%
5°
21°
Mon
10/26
Fog
7%
5°
22°
Tue
10/27
Mostly Clear
3%
7°
18°
Wed
10/28
Clear
3%
6°
18°
Thu
10/29
Clear
3%
7°
20°
Fri
10/30
Clear
3%
9°
26°
Sat
10/31
Clear
18%
10°
22°
Sun
11/1
Drizzle
44%
8°
21°
Mon
11/2
Drizzle
75%
8°
21°
Tue
11/3
Drizzle
60%
11°
21°
Wed
11/4
Drizzle
60%
8°
18°
Thu
11/5
Drizzle
60%
8°
17°
Fri
11/6
Drizzle
60%
8°
19°
Sat
11/7
Drizzle
60%
9°
19°
24
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
23 AQI 4.2 µg/m³
O3
Ground-level ozone
Dominant
24 AQI 27 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 24 Good 24 23
Sun 56 Moderate 32 56
Mon 60 Moderate 36 60
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 24, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE26 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index22.6
Kinematics
0–6 km Shear12 kt
0–1 km Shear6 kt
Eff. Shear—
0–1 km SRH-14
0–3 km SRH-17
Eff. SRH—
Storm Motion35° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-44.2
Thermo & Levels
PWAT0.26 in
0–3 km LR1.2 °C/km
700–500 LR6.7 °C/km
Total Totals12.4
LCL974 hPa
LFC—
EL—
Freezing Lvl9,669 ft