Flood Warning — Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL Flood Warning — Calhoun County, IL, Greene County, IL, Jersey County, IL, Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL 7:00 AM Flood Warning — Morgan County, IL, Pike County, IL, Scott County, IL, Brown County, IL 7:00 AM Flood Warning — Brown County, IL, Pike County, IL, Scott County, IL, Morgan County, IL 1:00 PM

Brown County, Illinois, United States

Last updated: 1:08 PM CDT  ·  Refresh
28°C
Feels like 31°
Partly Cloudy
▲ 31°  /  ▼ 19°
Wind
5 mph N
Humidity
64%
Dew Point
21°
Pressure
29.29 inHg
Visibility
10 mi
UV Index
8.5
Cloud Cover
55%
Sunrise
5:40 AM
Sunset
8:34 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Brown County is currently partly cloudy at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1438 J/kg) — isolated convective development possible. Sunrise: 5:40AM · Sunset: 8:34PM.

Alerts

Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL
Expires
Flood Warning
Calhoun County, IL, Greene County, IL, Jersey County, IL, Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL
Expires 7:00 AM
Flood Warning
Morgan County, IL, Pike County, IL, Scott County, IL, Brown County, IL
Expires 7:00 AM
Flood Warning
Brown County, IL, Pike County, IL, Scott County, IL, Morgan County, IL
Expires 1:00 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
21%
2 PM
29°
28%
3 PM
30°
28%
4 PM
29°
21%
5 PM
31°
22%
6 PM
29°
19%
7 PM
29°
12%
8 PM
27°
9%
9 PM
25°
9%
10 PM
24°
9%
11 PM
23°
10%
12 AM
22°
3%
1 AM
21°
3%
2 AM
21°
3%
3 AM
20°
7%
4 AM
20°
6%
5 AM
19°
6%
6 AM
19°
6%
7 AM
19°
6%
8 AM
21°
9%
9 AM
22°
9%
10 AM
23°
9%
11 AM
24°
15%
12 PM
25°
15%
7-Day Forecast
Today
31° 19°
Partly Cloudy with a 21% chance of rain.
Mon
29° 19°
Partly Cloudy.
Tue
30° 17°
Mostly Clear.
Wed
32° 18°
Partly Cloudy with a 61% chance of rain.
Thu
31° 21°
Rain, 75% chance.
Fri
29° 21°
Rain, 58% chance.
Sat
29° 19°
Clear with a 36% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 28° Partly Cloudy 21% 5 mph N 64%
2 PM 29° Overcast 28% 6 mph N 62%
3 PM 30° Partly Cloudy 28% 7 mph N 62%
4 PM 29° Mostly Cloudy 21% 7 mph N 62%
5 PM 31° Partly Cloudy 22% 7 mph N 65%
6 PM 29° Partly Cloudy 19% 8 mph N 68%
7 PM 29° Mostly Clear 12% 8 mph NNE 71%
8 PM 27° Mostly Clear 9% 7 mph NNE 75%
9 PM 25° Clear 9% 6 mph NNE 79%
10 PM 24° Clear 9% 6 mph NNE 82%
11 PM 23° Partly Cloudy 10% 5 mph NNE 85%
12 AM 22° Partly Cloudy 3% 5 mph NNE 88%
1 AM 21° Mostly Clear 3% 6 mph NE 92%
2 AM 21° Mostly Clear 3% 5 mph NE 94%
3 AM 20° Mostly Clear 7% 5 mph NNE 96%
4 AM 20° Fog 6% 5 mph NNE 97%
5 AM 19° Partly Cloudy 6% 5 mph NNE 97%
6 AM 19° Partly Cloudy 6% 5 mph NNE 96%
7 AM 19° Partly Cloudy 6% 6 mph NNE 96%
8 AM 21° Partly Cloudy 9% 6 mph NNE 93%
9 AM 22° Partly Cloudy 9% 6 mph NNE 90%
10 AM 23° Mostly Cloudy 9% 6 mph NNE 86%
11 AM 24° Mostly Cloudy 15% 6 mph NNE 83%
12 PM 25° Mostly Cloudy 15% 5 mph NNE 80%
15-Day Forecast
Today
7/5
Partly Cloudy
21%
19°
31°
Mon
7/6
Partly Cloudy
15%
19°
29°
Tue
7/7
Mostly Clear
7%
17°
30°
Wed
7/8
Partly Cloudy
61%
18°
32°
Thu
7/9
Rain
75%
21°
31°
Fri
7/10
Rain
58%
21°
29°
Sat
7/11
Clear
36%
19°
29°
Sun
7/12
Thunderstorm
42%
20°
31°
Mon
7/13
Thunderstorm
44%
21°
33°
Tue
7/14
Thunderstorm
35%
22°
33°
Wed
7/15
Thunderstorm
60%
22°
32°
Thu
7/16
Drizzle
60%
20°
31°
Fri
7/17
Drizzle
60%
20°
31°
Sat
7/18
Drizzle
60%
20°
31°
Sun
7/19
Drizzle
60%
20°
31°
37
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
37 AQI 6.6 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 37 Good 34 37
Tue 46 Good 29 46
Wed 56 Moderate 39 56
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, 15:00'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
SBCAPE1905 J/kg
MLCAPE792 J/kg
MUCAPE1905 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.2
Kinematics
0–6 km Shear17 kt
0–1 km Shear5 kt
Eff. Shear17 kt
0–1 km SRH-21
0–3 km SRH-67
Eff. SRH-67
Storm Motion258° @ 16 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.6
Thermo & Levels
PWAT1.62 in
0–3 km LR7.1 °C/km
700–500 LR6.5 °C/km
Total Totals47.5
LCL889 hPa
LFC992 hPa
EL199 hPa
Freezing Lvl13,064 ft