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

Washington County, Illinois, United States

Last updated: 1:17 PM CDT  ·  Refresh
12°C
Feels like 7°
Mostly Cloudy
▲ 12°  /  ▼ 1°
Wind
12 mph NNW
Humidity
59%
Dew Point
4°
Pressure
29.66 inHg
Visibility
10 mi
UV Index
4.2
Cloud Cover
76%
Sunrise
6:28 AM
Sunset
4:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Washington County is currently mostly cloudy at 12°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:28AM · Sunset: 4:52PM.

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
28 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
12°
0%
2 PM
12°
0%
3 PM
12°
0%
4 PM
12°
0%
5 PM
11°
0%
6 PM
10°
0%
7 PM
9°
0%
8 PM
6°
0%
9 PM
6°
0%
10 PM
4°
0%
11 PM
4°
0%
12 AM
3°
0%
1 AM
3°
0%
2 AM
2°
0%
3 AM
2°
0%
4 AM
1°
0%
5 AM
1°
0%
6 AM
1°
0%
7 AM
2°
0%
8 AM
2°
0%
9 AM
4°
0%
10 AM
6°
0%
11 AM
7°
0%
12 PM
9°
0%
7-Day Forecast
Today
12° 1°
Mostly Cloudy.
Sat
14° 1°
Partly Cloudy.
Sun
18° 3°
Mostly Clear.
Mon
21° 7°
Clear.
Tue
20° 8°
Clear.
Wed
17° 6°
Partly Cloudy with a 41% chance of rain.
Thu
13° 3°
Overcast with a 36% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 12° Mostly Cloudy 0% 12 mph NNW 59%
2 PM 12° Mostly Cloudy 0% 12 mph NNW 58%
3 PM 12° Partly Cloudy 0% 12 mph NNW 56%
4 PM 12° Partly Cloudy 0% 11 mph NNW 56%
5 PM 11° Partly Cloudy 0% 9 mph NNW 60%
6 PM 10° Partly Cloudy 0% 8 mph N 64%
7 PM 9° Mostly Clear 0% 6 mph NNW 68%
8 PM 6° Clear 0% 5 mph NNW 73%
9 PM 6° Clear 0% 5 mph NNW 76%
10 PM 4° Clear 0% 4 mph NNW 80%
11 PM 4° Clear 0% 4 mph NNW 82%
12 AM 3° Clear 0% 4 mph NNW 84%
1 AM 3° Clear 0% 3 mph NNW 87%
2 AM 2° Clear 0% 3 mph NNW 89%
3 AM 2° Clear 0% 3 mph NNW 90%
4 AM 1° Clear 0% 3 mph NW 91%
5 AM 1° Clear 0% 3 mph NW 91%
6 AM 1° Clear 0% 3 mph NW 91%
7 AM 2° Mostly Clear 0% 3 mph NW 90%
8 AM 2° Mostly Clear 0% 3 mph NNW 85%
9 AM 4° Partly Cloudy 0% 4 mph NNW 74%
10 AM 6° Partly Cloudy 0% 4 mph NNW 66%
11 AM 7° Partly Cloudy 0% 4 mph NNW 62%
12 PM 9° Partly Cloudy 0% 4 mph NW 58%
15-Day Forecast
Today
11/6
Mostly Cloudy
0%
1°
12°
Sat
11/7
Partly Cloudy
0%
1°
14°
Sun
11/8
Mostly Clear
3%
3°
18°
Mon
11/9
Clear
3%
7°
21°
Tue
11/10
Clear
3%
8°
20°
Wed
11/11
Partly Cloudy
41%
6°
17°
Thu
11/12
Overcast
36%
3°
13°
Fri
11/13
Mostly Cloudy
9%
0°
9°
Sat
11/14
Partly Cloudy
25%
-2°
10°
Sun
11/15
Partly Cloudy
50%
-2°
13°
Mon
11/16
Overcast
84%
2°
15°
Tue
11/17
Drizzle
85%
8°
15°
Wed
11/18
Drizzle
79%
8°
15°
Thu
11/19
Drizzle
73%
7°
14°
Fri
11/20
Drizzle
70%
6°
13°
28
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
19 AQI 3.5 µg/m³
O3
Ground-level ozone
Dominant
28 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 28 Good 28 19
Sun 38 Good 26 38
Mon 48 Good 28 48
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 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE71 J/kg
MLCAPE15 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index13.0
Kinematics
0–6 km Shear17 kt
0–1 km Shear6 kt
Eff. Shear—
0–1 km SRH20
0–3 km SRH38
Eff. SRH—
Storm Motion349° @ 30 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-22.7
Thermo & Levels
PWAT0.36 in
0–3 km LR3.0 °C/km
700–500 LR7.7 °C/km
Total Totals28.5
LCL896 hPa
LFC1004 hPa
EL850 hPa
Freezing Lvl3,533 ft