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 a. m.

Monroe County, Illinois, United States

Last updated: 1:17 p. m. CDT  ·  Refresh
11°C
Feels like 7°
Mostly Cloudy
▲ 13°  /  ▼ 1°
Wind
10 mph NNW
Humidity
72%
Dew Point
7°
Pressure
29,50 inHg
Visibility
10 mi
UV Index
4,0
Cloud Cover
80%
Sunrise
6:31 a. m.
Sunset
4:55 p. m.
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Monroe County is currently mostly cloudy at 11°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:31A. M. · Sunset: 4:55P. M..

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 a. m.
26 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
11°
0%
2 p. m.
13°
0%
3 p. m.
12°
0%
4 p. m.
11°
0%
5 p. m.
10°
0%
6 p. m.
9°
0%
7 p. m.
8°
0%
8 p. m.
7°
0%
9 p. m.
6°
0%
10 p. m.
5°
0%
11 p. m.
4°
0%
12 a. m.
4°
0%
1 a. m.
4°
0%
2 a. m.
3°
0%
3 a. m.
3°
0%
4 a. m.
2°
0%
5 a. m.
1°
0%
6 a. m.
1°
0%
7 a. m.
2°
0%
8 a. m.
3°
0%
9 a. m.
5°
0%
10 a. m.
6°
0%
11 a. m.
7°
0%
12 p. m.
10°
0%
7-Day Forecast
Today
13° 1°
Mostly Cloudy.
Sat
14° 1°
Partly Cloudy.
Sun
19° 3°
Clear.
Mon
22° 7°
Clear.
Tue
21° 8°
Clear.
Wed
18° 7°
Partly Cloudy with a 41% chance of rain.
Thu
15° 3°
Mostly Cloudy with a 36% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 11° Mostly Cloudy 0% 10 mph NNW 72%
2 p. m. 13° Mostly Cloudy 0% 9 mph NNW 69%
3 p. m. 12° Mostly Cloudy 0% 9 mph NNW 68%
4 p. m. 11° Partly Cloudy 0% 8 mph NNW 70%
5 p. m. 10° Partly Cloudy 0% 7 mph N 74%
6 p. m. 9° Partly Cloudy 0% 6 mph N 76%
7 p. m. 8° Partly Cloudy 0% 6 mph N 77%
8 p. m. 7° Partly Cloudy 0% 6 mph N 78%
9 p. m. 6° Mostly Clear 0% 5 mph N 79%
10 p. m. 5° Mostly Clear 0% 5 mph N 80%
11 p. m. 4° Mostly Clear 0% 4 mph NNW 83%
12 a. m. 4° Clear 0% 4 mph NNW 85%
1 a. m. 4° Clear 0% 4 mph NNW 87%
2 a. m. 3° Clear 0% 4 mph NW 89%
3 a. m. 3° Clear 0% 4 mph NW 89%
4 a. m. 2° Mostly Clear 0% 4 mph NW 90%
5 a. m. 1° Mostly Clear 0% 4 mph NW 90%
6 a. m. 1° Mostly Clear 0% 4 mph NW 90%
7 a. m. 2° Mostly Clear 0% 4 mph NW 89%
8 a. m. 3° Mostly Clear 0% 4 mph NW 86%
9 a. m. 5° Partly Cloudy 0% 4 mph NW 79%
10 a. m. 6° Partly Cloudy 0% 4 mph NW 72%
11 a. m. 7° Partly Cloudy 0% 4 mph NNW 67%
12 p. m. 10° Partly Cloudy 0% 4 mph NNW 64%
15-Day Forecast
Today
11/6
Mostly Cloudy
0%
1°
13°
Sat
11/7
Partly Cloudy
0%
1°
14°
Sun
11/8
Clear
3%
3°
19°
Mon
11/9
Clear
3%
7°
22°
Tue
11/10
Clear
3%
8°
21°
Wed
11/11
Partly Cloudy
41%
7°
18°
Thu
11/12
Mostly Cloudy
36%
3°
15°
Fri
11/13
Overcast
9%
1°
10°
Sat
11/14
Mostly Clear
25%
-2°
11°
Sun
11/15
Mostly Cloudy
50%
-2°
14°
Mon
11/16
Overcast
87%
3°
16°
Tue
11/17
Drizzle
83%
8°
16°
Wed
11/18
Drizzle
81%
7°
16°
Thu
11/19
Drizzle
70%
7°
15°
Fri
11/20
Drizzle
73%
7°
14°
26
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
21 AQI 3.8 µg/m³
O3
Ground-level ozone
Dominant
26 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 26 Good 26 21
Sun 50 Good 22 50
Mon 44 Good 27 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 vie. nov. 6, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE51 J/kg
MLCAPE15 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index10.9
Kinematics
0–6 km Shear15 kt
0–1 km Shear6 kt
Eff. Shear—
0–1 km SRH19
0–3 km SRH39
Eff. SRH—
Storm Motion355° @ 27 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-17.0
Thermo & Levels
PWAT0.42 in
0–3 km LR2.9 °C/km
700–500 LR7.7 °C/km
Total Totals32.8
LCL934 hPa
LFC999 hPa
EL845 hPa
Freezing Lvl10,866 ft