Areal Flood Watch 10:00 PM

Mercer County, Illinois, United States

Last updated: 9:17 PM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Clear
▲ 28°  /  ▼ 19°
Wind
4 mph NE
Humidity
87%
Dew Point
21°
Pressure
29.20 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
21%
Sunrise
5:35 AM
Sunset
8:39 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1307 J/kg) — isolated convective development possible. Sunrise: 5:35AM · Sunset: 8:39PM.

Alerts

Areal Flood Watch
Expires 10:00 PM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
8%
10 PM
22°
23%
11 PM
22°
16%
12 AM
21°
16%
1 AM
21°
4%
2 AM
21°
4%
3 AM
21°
8%
4 AM
21°
8%
5 AM
19°
8%
6 AM
20°
7%
7 AM
21°
16%
8 AM
22°
19%
9 AM
23°
8%
10 AM
24°
8%
11 AM
25°
8%
12 PM
26°
8%
1 PM
28°
9%
2 PM
28°
14%
3 PM
29°
15%
4 PM
29°
25%
5 PM
29°
28%
6 PM
28°
36%
7 PM
28°
36%
8 PM
27°
36%
7-Day Forecast
Tonight
28° 19°
Mostly Clear.
Sun
29° 19°
Mostly Cloudy with a 27% chance of rain.
Mon
29° 17°
Clear.
Tue
29° 17°
Partly Cloudy.
Wed
29° 18°
Rain, 72% chance.
Thu
26° 18°
Rain, 77% chance.
Fri
27° 17°
Rain, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 8% 4 mph NE 87%
10 PM 22° Partly Cloudy 23% 4 mph ENE 90%
11 PM 22° Partly Cloudy 16% 3 mph N 92%
12 AM 21° Mostly Cloudy 16% 3 mph NNW 94%
1 AM 21° Overcast 4% 3 mph N 95%
2 AM 21° Overcast 4% 4 mph ENE 95%
3 AM 21° Overcast 8% 4 mph NE 95%
4 AM 21° Overcast 8% 4 mph NE 95%
5 AM 19° Overcast 8% 3 mph NNE 95%
6 AM 20° Overcast 7% 3 mph NNE 95%
7 AM 21° Overcast 16% 4 mph NNE 94%
8 AM 22° Mostly Cloudy 19% 5 mph NNE 90%
9 AM 23° Mostly Cloudy 8% 5 mph NNE 85%
10 AM 24° Mostly Cloudy 8% 6 mph NNE 80%
11 AM 25° Mostly Cloudy 8% 7 mph NNE 77%
12 PM 26° Mostly Cloudy 8% 7 mph N 74%
1 PM 28° Mostly Cloudy 9% 8 mph N 71%
2 PM 28° Partly Cloudy 14% 8 mph NNE 69%
3 PM 29° Partly Cloudy 15% 8 mph NNE 68%
4 PM 29° Partly Cloudy 25% 8 mph NNE 68%
5 PM 29° Partly Cloudy 28% 8 mph NNE 71%
6 PM 28° Mostly Cloudy 36% 8 mph NNE 74%
7 PM 28° Mostly Cloudy 36% 8 mph NNE 77%
8 PM 27° Mostly Cloudy 36% 7 mph NNE 80%
15-Day Forecast
Today
7/4
Mostly Clear
8%
19°
28°
Sun
7/5
Mostly Cloudy
27%
19°
29°
Mon
7/6
Clear
7%
17°
29°
Tue
7/7
Partly Cloudy
7%
17°
29°
Wed
7/8
Rain
72%
18°
29°
Thu
7/9
Rain
77%
18°
26°
Fri
7/10
Rain
52%
17°
27°
Sat
7/11
Rain
53%
16°
26°
Sun
7/12
Drizzle
43%
12°
26°
Mon
7/13
Drizzle
44%
14°
27°
Tue
7/14
Clear
12%
19°
29°
Wed
7/15
Drizzle
60%
19°
29°
Thu
7/16
Drizzle
60%
19°
28°
Fri
7/17
Drizzle
60%
19°
29°
Sat
7/18
Drizzle
60%
19°
28°
47
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
47 AQI 8.5 µg/m³
O3
Ground-level ozone
43 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 43 47
Mon 38 Good 37 38
Tue 52 Moderate 31 52
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 Sun Jul 5, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE814 J/kg
MLCAPE311 J/kg
MUCAPE814 J/kg
SBCIN-70 J/kg
MLCIN0 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear21 kt
0–1 km Shear11 kt
Eff. Shear19 kt
0–1 km SRH-31
0–3 km SRH-71
Eff. SRH-71
Storm Motion226° @ 7 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.8
Thermo & Levels
PWAT1.62 in
0–3 km LR5.6 °C/km
700–500 LR5.7 °C/km
Total Totals43.8
LCL950 hPa
LFC772 hPa
EL230 hPa
Freezing Lvl13,570 ft