Freeze Warning — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Madison, IL, St. Clair, IL, Monroe, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Boone, MO, Audrain, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 8:00 AM

Brown County, Illinois, United States

Last updated: 1:19 PM CDT  ·  Refresh
8°C
Feels like 6°
Partly Cloudy
▲ 10°  /  ▼ 0°
Wind
9 mph NNW
Humidity
62%
Dew Point
2°
Pressure
29.49 inHg
Visibility
10 mi
UV Index
5.7
Cloud Cover
48%
Sunrise
6:36 AM
Sunset
4:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Brown County is currently partly cloudy at 8°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:36AM · Sunset: 4:54PM.

Alerts

Freeze Warning
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Madison, IL, St. Clair, IL, Monroe, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Boone, MO, Audrain, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 8:00 AM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
8°
0%
2 PM
9°
0%
3 PM
9°
0%
4 PM
9°
0%
5 PM
7°
0%
6 PM
6°
0%
7 PM
4°
0%
8 PM
4°
0%
9 PM
3°
0%
10 PM
3°
0%
11 PM
3°
0%
12 AM
3°
0%
1 AM
2°
0%
2 AM
2°
0%
3 AM
2°
0%
4 AM
0°
0%
5 AM
0°
0%
6 AM
0°
0%
7 AM
1°
0%
8 AM
2°
0%
9 AM
3°
0%
10 AM
4°
0%
11 AM
6°
0%
12 PM
7°
0%
7-Day Forecast
Today
10° 0°
Partly Cloudy.
Sat
12° 0°
Mostly Cloudy.
Sun
17° 3°
Mostly Clear.
Mon
19° 7°
Mostly Clear.
Tue
17° 7°
Clear.
Wed
14° 5°
Partly Cloudy with a 43% chance of rain.
Thu
8° 1°
Overcast with a 57% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 8° Partly Cloudy 0% 9 mph NNW 62%
2 PM 9° Partly Cloudy 0% 8 mph NNW 60%
3 PM 9° Mostly Clear 0% 8 mph NNW 57%
4 PM 9° Mostly Clear 0% 7 mph NNW 59%
5 PM 7° Mostly Clear 0% 5 mph NNW 65%
6 PM 6° Clear 0% 5 mph NNW 71%
7 PM 4° Clear 0% 5 mph NNW 76%
8 PM 4° Clear 0% 5 mph NNW 80%
9 PM 3° Clear 0% 4 mph NNW 83%
10 PM 3° Clear 0% 4 mph NNW 85%
11 PM 3° Clear 0% 4 mph NNW 87%
12 AM 3° Clear 0% 4 mph NNW 88%
1 AM 2° Clear 0% 3 mph NNW 88%
2 AM 2° Clear 0% 3 mph NW 89%
3 AM 2° Mostly Clear 0% 3 mph NW 90%
4 AM 0° Partly Cloudy 0% 3 mph NW 91%
5 AM 0° Partly Cloudy 0% 3 mph WNW 92%
6 AM 0° Mostly Cloudy 0% 3 mph WNW 92%
7 AM 1° Mostly Cloudy 0% 3 mph WNW 90%
8 AM 2° Mostly Cloudy 0% 3 mph WNW 86%
9 AM 3° Mostly Cloudy 0% 4 mph WNW 77%
10 AM 4° Mostly Cloudy 0% 4 mph WNW 70%
11 AM 6° Mostly Cloudy 0% 4 mph WNW 66%
12 PM 7° Mostly Cloudy 0% 4 mph WNW 63%
15-Day Forecast
Today
11/6
Partly Cloudy
0%
0°
10°
Sat
11/7
Mostly Cloudy
0%
0°
12°
Sun
11/8
Mostly Clear
3%
3°
17°
Mon
11/9
Mostly Clear
3%
7°
19°
Tue
11/10
Clear
3%
7°
17°
Wed
11/11
Partly Cloudy
43%
5°
14°
Thu
11/12
Overcast
57%
1°
8°
Fri
11/13
Partly Cloudy
22%
-2°
8°
Sat
11/14
Partly Cloudy
44%
-4°
9°
Sun
11/15
Overcast
52%
-3°
12°
Mon
11/16
Overcast
71%
4°
14°
Tue
11/17
Drizzle
73%
8°
14°
Wed
11/18
Drizzle
73%
7°
13°
Thu
11/19
Drizzle
71%
6°
12°
Fri
11/20
Clear
60%
6°
12°
31
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
9 AQI 1.8 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 31 Good 31 9
Sun 28 Good 28 20
Mon 44 Good 29 44
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 Fri Nov 6, 18:00'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
SBCAPE44 J/kg
MLCAPE11 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN-3 J/kg
Lifted Index16.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear4 kt
Eff. Shear—
0–1 km SRH20
0–3 km SRH43
Eff. SRH—
Storm Motion0° @ 30 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-15.1
Thermo & Levels
PWAT0.34 in
0–3 km LR2.5 °C/km
700–500 LR7.3 °C/km
Total Totals30.1
LCL903 hPa
LFC999 hPa
EL879 hPa
Freezing Lvl2,375 ft