Cass County, Illinois, United States

Last updated: 5:42 AM CDT  ·  Refresh
21°C
Feels like 23°
Mostly Cloudy
▲ 31°  /  ▼ 14°
Wind
6 mph NE
Humidity
95%
Dew Point
20°
Pressure
29.38 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
73%
Sunrise
6:33 AM
Sunset
7:24 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently mostly cloudy at 21°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:33AM · Sunset: 7:24PM.

Alerts

No active alerts for this location.
44 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
6 AM
18°
19%
7 AM
19°
20%
8 AM
21°
20%
9 AM
23°
20%
10 AM
24°
20%
11 AM
26°
14%
12 PM
27°
14%
1 PM
29°
3%
2 PM
30°
3%
3 PM
30°
3%
4 PM
29°
3%
5 PM
29°
3%
6 PM
27°
3%
7 PM
26°
3%
8 PM
24°
3%
9 PM
22°
3%
10 PM
21°
3%
11 PM
21°
3%
12 AM
19°
3%
1 AM
18°
3%
2 AM
18°
3%
3 AM
18°
3%
4 AM
17°
3%
7-Day Forecast
Today
31° 14°
Partly Cloudy with a 20% chance of rain.
Mon
31° 14°
Partly Cloudy.
Tue
37° 14°
Mostly Clear with a 25% chance of rain.
Wed
34° 19°
Rain, 83% chance.
Thu
32° 17°
Partly Cloudy with a 67% chance of rain.
Fri
34° 14°
Drizzle, 62% chance.
Sat
37° 19°
Rain, 76% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Cloudy 3% 6 mph NE 95%
6 AM 18° Partly Cloudy 19% 6 mph NE 94%
7 AM 19° Mostly Cloudy 20% 7 mph NE 88%
8 AM 21° Mostly Cloudy 20% 8 mph ENE 79%
9 AM 23° Mostly Cloudy 20% 10 mph ENE 71%
10 AM 24° Mostly Cloudy 20% 10 mph ENE 65%
11 AM 26° Partly Cloudy 14% 10 mph ENE 59%
12 PM 27° Partly Cloudy 14% 10 mph ENE 53%
1 PM 29° Partly Cloudy 3% 10 mph ENE 49%
2 PM 30° Partly Cloudy 3% 10 mph ENE 48%
3 PM 30° Partly Cloudy 3% 10 mph ENE 46%
4 PM 29° Partly Cloudy 3% 10 mph ENE 48%
5 PM 29° Mostly Clear 3% 10 mph ENE 52%
6 PM 27° Partly Cloudy 3% 9 mph ENE 57%
7 PM 26° Mostly Clear 3% 8 mph ENE 62%
8 PM 24° Partly Cloudy 3% 8 mph ENE 68%
9 PM 22° Partly Cloudy 3% 7 mph ENE 74%
10 PM 21° Partly Cloudy 3% 7 mph E 77%
11 PM 21° Mostly Cloudy 3% 8 mph E 79%
12 AM 19° Mostly Cloudy 3% 8 mph E 81%
1 AM 18° Mostly Cloudy 3% 8 mph E 84%
2 AM 18° Mostly Cloudy 3% 7 mph E 86%
3 AM 18° Mostly Cloudy 3% 7 mph E 88%
4 AM 17° Mostly Cloudy 3% 7 mph E 89%
15-Day Forecast
Today
9/6
Partly Cloudy
20%
14°
31°
Mon
9/7
Partly Cloudy
3%
14°
31°
Tue
9/8
Mostly Clear
25%
14°
37°
Wed
9/9
Rain
83%
19°
34°
Thu
9/10
Partly Cloudy
67%
17°
32°
Fri
9/11
Drizzle
62%
14°
34°
Sat
9/12
Rain
76%
19°
37°
Sun
9/13
Rain
74%
16°
32°
Mon
9/14
Drizzle
47%
14°
28°
Tue
9/15
Drizzle
53%
9°
27°
Wed
9/16
Drizzle
60%
15°
29°
Thu
9/17
Drizzle
60%
15°
29°
Fri
9/18
Clear
60%
16°
30°
Sat
9/19
Drizzle
60%
16°
31°
Sun
9/20
Clear
60%
16°
31°
44
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
36 AQI 6.6 µg/m³
O3
Ground-level ozone
Dominant
44 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 44 Good 44 36
Mon 52 Moderate 42 52
Tue 49 Good 46 49
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 Sep 6, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE99 J/kg
MLCAPE41 J/kg
MUCAPE147 J/kg
SBCIN-461 J/kg
MLCIN-501 J/kg
Lifted Index-0.9
Kinematics
0–6 km Shear24 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH18
0–3 km SRH25
Eff. SRH—
Storm Motion8° @ 26 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index20.2
Thermo & Levels
PWAT1.40 in
0–3 km LR3.8 °C/km
700–500 LR6.7 °C/km
Total Totals40.1
LCL982 hPa
LFC637 hPa
EL439 hPa
Freezing Lvl13,766 ft