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: 5:11 AM CDT  ·  Refresh
25°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 3021 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
25°
8%
6 AM
24°
25%
7 AM
24°
25%
8 AM
26°
25%
9 AM
28°
25%
10 AM
29°
23%
11 AM
31°
23%
12 PM
32°
24%
1 PM
34°
11%
2 PM
34°
20%
3 PM
35°
18%
4 PM
35°
22%
5 PM
35°
22%
6 PM
34°
27%
7 PM
33°
28%
8 PM
31°
28%
9 PM
29°
22%
10 PM
28°
22%
11 PM
27°
22%
12 AM
26°
23%
1 AM
26°
8%
2 AM
26°
9%
3 AM
26°
9%
4 AM
24°
20%
7-Day Forecast
Today
36° 23°
Partly Cloudy with a 28% chance of rain.
Wed
35° 23°
Partly Cloudy with a 56% chance of rain.
Thu
33° 23°
Partly Cloudy with a 72% chance of rain.
Fri
31° 21°
Mostly Cloudy with a 56% chance of rain.
Sat
37° 22°
Partly Cloudy.
Sun
36° 20°
Drizzle, 49% chance.
Mon
31° 19°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 8% 7 mph SSW 80%
6 AM 24° Mostly Clear 25% 8 mph SSW 76%
7 AM 24° Mostly Clear 25% 8 mph SW 76%
8 AM 26° Mostly Clear 25% 9 mph SW 70%
9 AM 28° Partly Cloudy 25% 11 mph SW 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 24% 13 mph SW 53%
1 PM 34° Mostly Cloudy 11% 14 mph SW 49%
2 PM 34° Partly Cloudy 20% 14 mph SW 46%
3 PM 35° Partly Cloudy 18% 13 mph SW 45%
4 PM 35° Partly Cloudy 22% 13 mph SW 44%
5 PM 35° Partly Cloudy 22% 11 mph SW 48%
6 PM 34° Mostly Cloudy 27% 9 mph SW 52%
7 PM 33° Partly Cloudy 28% 7 mph SW 56%
8 PM 31° Partly Cloudy 28% 6 mph SW 62%
9 PM 29° Partly Cloudy 22% 6 mph SSW 66%
10 PM 28° Mostly Clear 22% 7 mph S 70%
11 PM 27° Mostly Clear 22% 6 mph S 72%
12 AM 26° Mostly Clear 23% 6 mph SSW 74%
1 AM 26° Mostly Clear 8% 6 mph SSW 76%
2 AM 26° Mostly Clear 9% 6 mph SSW 77%
3 AM 26° Mostly Clear 9% 5 mph SSW 79%
4 AM 24° Clear 20% 5 mph SSW 80%
15-Day Forecast
Today
8/11
Partly Cloudy
28%
23°
36°
Wed
8/12
Partly Cloudy
56%
23°
35°
Thu
8/13
Partly Cloudy
72%
23°
33°
Fri
8/14
Mostly Cloudy
56%
21°
31°
Sat
8/15
Partly Cloudy
15%
22°
37°
Sun
8/16
Drizzle
49%
20°
36°
Mon
8/17
Clear
28%
19°
31°
Tue
8/18
Clear
34%
20°
35°
Wed
8/19
Partly Cloudy
35%
22°
36°
Thu
8/20
Mostly Clear
32%
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, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1513 J/kg
MLCAPE1678 J/kg
MUCAPE1836 J/kg
SBCIN-573 J/kg
MLCIN0 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear18 kt
0–1 km Shear22 kt
Eff. Shear11 kt
0–1 km SRH163
0–3 km SRH149
Eff. SRH2
Storm Motion312° @ 18 kt
0–1 km EHI1.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index21.6
Thermo & Levels
PWAT1.40 in
0–3 km LR4.0 °C/km
700–500 LR8.0 °C/km
Total Totals51.4
LCL952 hPa
LFC651 hPa
EL188 hPa
Freezing Lvl14,626 ft