Flood Warning — Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL

Cass County, Illinois, United States

Last updated: 7:11 PM CDT  ·  Refresh
27°C
Feels like 31°
Partly Cloudy
▲ 32°  /  ▼ 19°
Wind
9 mph NNW
Humidity
84%
Dew Point
22°
Pressure
29.28 inHg
Visibility
10 mi
UV Index
3.1
Cloud Cover
51%
Sunrise
5:37 AM
Sunset
8:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently partly cloudy at 27°C. Precipitation is likely — peak probability 60% around 1 PM. Atmospheric instability is elevated (CAPE up to 1747 J/kg) — isolated convective development possible. Sunrise: 5:37AM · Sunset: 8:33PM.

Alerts

Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL
Expires
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
36%
8 PM
27°
55%
9 PM
25°
49%
10 PM
24°
35%
11 PM
24°
35%
12 AM
23°
15%
1 AM
22°
11%
2 AM
21°
11%
3 AM
21°
11%
4 AM
21°
14%
5 AM
19°
19%
6 AM
19°
19%
7 AM
20°
15%
8 AM
21°
24%
9 AM
24°
33%
10 AM
24°
42%
11 AM
25°
43%
12 PM
26°
56%
1 PM
27°
59%
2 PM
28°
55%
3 PM
28°
44%
4 PM
28°
35%
5 PM
28°
39%
6 PM
27°
34%
7-Day Forecast
Tonight
32° 19°
Partly Cloudy with a 36% chance of rain.
Sun
28° 19°
Rain, 59% chance.
Mon
29° 18°
Mostly Clear.
Tue
30° 17°
Haze.
Wed
31° 18°
Mostly Clear.
Thu
29° 20°
Heavy Rain, 90% chance.
Fri
28° 19°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Partly Cloudy 36% 9 mph NNW 84%
8 PM 27° Mostly Cloudy 55% 5 mph N 87%
9 PM 25° Mostly Cloudy 49% 3 mph N 90%
10 PM 24° Mostly Cloudy 35% 4 mph N 92%
11 PM 24° Mostly Cloudy 35% 3 mph N 94%
12 AM 23° Mostly Cloudy 15% 3 mph NNW 95%
1 AM 22° Mostly Cloudy 11% 4 mph NNW 96%
2 AM 21° Mostly Cloudy 11% 3 mph N 96%
3 AM 21° Mostly Cloudy 11% 3 mph NNW 96%
4 AM 21° Mostly Cloudy 14% 3 mph NNW 96%
5 AM 19° Mostly Cloudy 19% 3 mph N 96%
6 AM 19° Mostly Cloudy 19% 4 mph N 96%
7 AM 20° Fog 15% 5 mph N 95%
8 AM 21° Mostly Cloudy 24% 4 mph N 91%
9 AM 24° Drizzle 33% 5 mph N 87%
10 AM 24° Drizzle 42% 6 mph N 83%
11 AM 25° Drizzle 43% 6 mph N 81%
12 PM 26° Rain 56% 6 mph N 79%
1 PM 27° Rain 59% 6 mph N 76%
2 PM 28° Rain 55% 5 mph N 74%
3 PM 28° Drizzle 44% 6 mph N 72%
4 PM 28° Mostly Cloudy 35% 6 mph N 72%
5 PM 28° Mostly Cloudy 39% 6 mph N 74%
6 PM 27° Partly Cloudy 34% 7 mph N 77%
15-Day Forecast
Today
7/4
Partly Cloudy
36%
19°
32°
Sun
7/5
Rain
59%
19°
28°
Mon
7/6
Mostly Clear
12%
18°
29°
Tue
7/7
Haze
19%
17°
30°
Wed
7/8
Mostly Clear
16%
18°
31°
Thu
7/9
Heavy Rain
90%
20°
29°
Fri
7/10
Rain
64%
19°
28°
Sat
7/11
Clear
53%
18°
28°
Sun
7/12
Drizzle
43%
16°
27°
Mon
7/13
Clear
44%
16°
29°
Tue
7/14
Drizzle
51%
18°
31°
Wed
7/15
Drizzle
60%
18°
29°
Thu
7/16
Drizzle
60%
17°
27°
Fri
7/17
Drizzle
60%
17°
28°
Sat
7/18
Drizzle
60%
18°
29°
52
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
52 AQI 9.6 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 34 52
Mon 44 Good 34 44
Tue 59 Moderate 35 59
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 Sat Jul 4, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1742 J/kg
MLCAPE1643 J/kg
MUCAPE1895 J/kg
SBCIN-53 J/kg
MLCIN0 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear15 kt
0–1 km Shear13 kt
Eff. Shear13 kt
0–1 km SRH-69
0–3 km SRH-97
Eff. SRH-97
Storm Motion232° @ 15 kt
0–1 km EHI-0.8
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.2
Thermo & Levels
PWAT1.73 in
0–3 km LR6.4 °C/km
700–500 LR5.3 °C/km
Total Totals45.0
LCL920 hPa
LFC861 hPa
EL182 hPa
Freezing Lvl14,764 ft