Heat Advisory — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 8:00 PM

Greene County, Illinois, United States

Last updated: 6:04 AM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
7 mph SSW
Humidity
80%
Dew Point
22°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
22%
Sunrise
6:10 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Greene County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3157 J/kg) — isolated convective development possible. Sunrise: 6:10AM · Sunset: 8:02PM.

Alerts

Heat Advisory
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 8:00 PM
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
8%
7 AM
24°
25%
8 AM
26°
25%
9 AM
28°
25%
10 AM
29°
23%
11 AM
31°
23%
12 PM
32°
23%
1 PM
34°
6%
2 PM
34°
20%
3 PM
35°
18%
4 PM
36°
21%
5 PM
35°
22%
6 PM
34°
29%
7 PM
33°
27%
8 PM
31°
28%
9 PM
29°
21%
10 PM
28°
22%
11 PM
27°
22%
12 AM
27°
22%
1 AM
26°
8%
2 AM
26°
8%
3 AM
25°
9%
4 AM
25°
18%
5 AM
24°
20%
7-Day Forecast
Today
36° 23°
Partly Cloudy with a 29% chance of rain.
Wed
35° 23°
Partly Cloudy with a 48% chance of rain.
Thu
33° 23°
Partly Cloudy with a 52% chance of rain.
Fri
31° 21°
Mostly Cloudy with a 69% chance of rain.
Sat
37° 22°
Partly Cloudy.
Sun
36° 21°
Mostly Cloudy with a 46% chance of rain.
Mon
32° 19°
Clear with a 49% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 8% 7 mph SSW 80%
7 AM 24° Mostly Clear 25% 8 mph SSW 76%
8 AM 26° Partly Cloudy 25% 9 mph SW 71%
9 AM 28° Partly Cloudy 25% 11 mph WSW 64%
10 AM 29° Partly Cloudy 23% 12 mph WSW 59%
11 AM 31° Mostly Cloudy 23% 12 mph WSW 56%
12 PM 32° Mostly Cloudy 23% 13 mph SW 53%
1 PM 34° Mostly Cloudy 6% 14 mph SW 49%
2 PM 34° Partly Cloudy 20% 14 mph SW 46%
3 PM 35° Partly Cloudy 18% 14 mph SW 45%
4 PM 36° Partly Cloudy 21% 13 mph SW 44%
5 PM 35° Partly Cloudy 22% 11 mph SW 47%
6 PM 34° Partly Cloudy 29% 10 mph SW 51%
7 PM 33° Partly Cloudy 27% 7 mph SW 56%
8 PM 31° Partly Cloudy 28% 6 mph SW 61%
9 PM 29° Partly Cloudy 21% 6 mph SSW 66%
10 PM 28° Partly Cloudy 22% 7 mph S 70%
11 PM 27° Partly Cloudy 22% 6 mph S 72%
12 AM 27° Mostly Clear 22% 6 mph SSW 74%
1 AM 26° Mostly Clear 8% 6 mph SSW 75%
2 AM 26° Mostly Clear 8% 6 mph SSW 77%
3 AM 25° Mostly Clear 9% 5 mph SSW 78%
4 AM 25° Mostly Clear 18% 5 mph SSW 80%
5 AM 24° Clear 20% 5 mph SSW 80%
15-Day Forecast
Today
8/11
Partly Cloudy
29%
23°
36°
Wed
8/12
Partly Cloudy
48%
23°
35°
Thu
8/13
Partly Cloudy
52%
23°
33°
Fri
8/14
Mostly Cloudy
69%
21°
31°
Sat
8/15
Partly Cloudy
15%
22°
37°
Sun
8/16
Mostly Cloudy
46%
21°
36°
Mon
8/17
Clear
49%
19°
32°
Tue
8/18
Clear
34%
19°
36°
Wed
8/19
Partly Cloudy
35%
22°
37°
Thu
8/20
Mostly Clear
35%
22°
38°
Fri
8/21
Drizzle
60%
19°
38°
Sat
8/22
Drizzle
60%
20°
34°
Sun
8/23
Drizzle
60%
19°
34°
Mon
8/24
Drizzle
60%
19°
32°
Tue
8/25
Drizzle
60%
19°
32°
38
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
38 AQI 6.8 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 38 Good 36 38
Wed 37 Good 37 22
Thu 37 Good 37 31
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 Tue Aug 11, 09:00'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
SBCAPE1349 J/kg
MLCAPE1450 J/kg
MUCAPE1616 J/kg
SBCIN-542 J/kg
MLCIN0 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear19 kt
0–1 km Shear20 kt
Eff. Shear12 kt
0–1 km SRH159
0–3 km SRH149
Eff. SRH-10
Storm Motion310° @ 18 kt
0–1 km EHI1.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.3
Thermo & Levels
PWAT1.55 in
0–3 km LR4.0 °C/km
700–500 LR8.1 °C/km
Total Totals54.4
LCL952 hPa
LFC657 hPa
EL190 hPa
Freezing Lvl14,482 ft