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

Cass County, Illinois, United States

Last updated: 2:27 PM CDT  ·  Refresh
27°C
Feels like 28°
Partly Cloudy
▲ 27°  /  ▼ 17°
Wind
9 mph NNW
Humidity
65%
Dew Point
18°
Pressure
29.41 inHg
Visibility
10 mi
UV Index
8.6
Cloud Cover
34%
Sunrise
6:14 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently partly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:14AM · Sunset: 7:54PM.

Alerts

Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL
Expires
Flood Warning
Cass County, IL, Fulton County, IL, Mason County, IL
Expires
30 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
5%
3 PM
24°
5%
4 PM
24°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
23°
3%
8 PM
22°
3%
9 PM
22°
3%
10 PM
21°
3%
11 PM
20°
3%
12 AM
19°
3%
1 AM
19°
3%
2 AM
19°
3%
3 AM
18°
3%
4 AM
18°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
17°
3%
8 AM
19°
3%
9 AM
21°
3%
10 AM
21°
3%
11 AM
22°
3%
12 PM
23°
3%
1 PM
22°
18%
7-Day Forecast
Today
27° 17°
Partly Cloudy.
Tue
27° 17°
Mostly Cloudy with a 59% chance of rain.
Wed
26° 18°
Mostly Cloudy with a 69% chance of rain.
Thu
26° 15°
Clear with a 52% chance of rain.
Fri
26° 14°
Clear with a 35% chance of rain.
Sat
27° 14°
Clear with a 60% chance of rain.
Sun
26° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Partly Cloudy 5% 9 mph NNW 65%
3 PM 24° Partly Cloudy 5% 9 mph NNW 64%
4 PM 24° Partly Cloudy 3% 8 mph NNW 64%
5 PM 26° Mostly Cloudy 3% 8 mph NNW 66%
6 PM 25° Mostly Cloudy 3% 6 mph NNW 71%
7 PM 23° Mostly Cloudy 3% 4 mph NNW 75%
8 PM 22° Partly Cloudy 3% 4 mph NNW 77%
9 PM 22° Partly Cloudy 3% 4 mph NW 78%
10 PM 21° Partly Cloudy 3% 3 mph NW 81%
11 PM 20° Mostly Clear 3% 2 mph WNW 84%
12 AM 19° Clear 3% 2 mph S 88%
1 AM 19° Mostly Clear 3% 4 mph S 90%
2 AM 19° Mostly Clear 3% 4 mph S 91%
3 AM 18° Partly Cloudy 3% 4 mph SSW 92%
4 AM 18° Partly Cloudy 3% 5 mph SSW 93%
5 AM 17° Partly Cloudy 3% 5 mph SSW 93%
6 AM 17° Partly Cloudy 3% 5 mph SSW 93%
7 AM 17° Partly Cloudy 3% 6 mph SSW 91%
8 AM 19° Partly Cloudy 3% 6 mph SSW 84%
9 AM 21° Mostly Cloudy 3% 7 mph SSW 79%
10 AM 21° Mostly Cloudy 3% 7 mph SSW 76%
11 AM 22° Mostly Cloudy 3% 7 mph SW 73%
12 PM 23° Mostly Cloudy 3% 7 mph SW 70%
1 PM 22° Mostly Cloudy 18% 7 mph SW 69%
15-Day Forecast
Today
8/17
Partly Cloudy
5%
17°
27°
Tue
8/18
Mostly Cloudy
59%
17°
27°
Wed
8/19
Mostly Cloudy
69%
18°
26°
Thu
8/20
Clear
52%
15°
26°
Fri
8/21
Clear
35%
14°
26°
Sat
8/22
Clear
60%
14°
27°
Sun
8/23
Clear
9%
16°
26°
Mon
8/24
Clear
25%
17°
26°
Tue
8/25
Clear
60%
18°
27°
Wed
8/26
Clear
25%
17°
27°
Thu
8/27
Clear
25%
12°
26°
Fri
8/28
Drizzle
60%
17°
26°
Sat
8/29
Clear
25%
16°
26°
Sun
8/30
Drizzle
60%
17°
27°
Mon
8/31
Drizzle
60%
17°
27°
30
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
28 AQI 5.2 µg/m³
O3
Ground-level ozone
Dominant
30 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 30 Good 30 28
Wed 39 Good 29 39
Thu 35 Good 35 25
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 Mon Aug 17, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE61 J/kg
MLCAPE6 J/kg
MUCAPE61 J/kg
SBCIN0 J/kg
MLCIN-4 J/kg
Lifted Index1.5
Kinematics
0–6 km Shear18 kt
0–1 km Shear4 kt
Eff. Shear—
0–1 km SRH-1
0–3 km SRH54
Eff. SRH—
Storm Motion329° @ 28 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index5.5
Thermo & Levels
PWAT1.10 in
0–3 km LR5.4 °C/km
700–500 LR5.9 °C/km
Total Totals34.6
LCL879 hPa
LFC996 hPa
EL784 hPa
Freezing Lvl14,846 ft