Excessive Heat 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, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 9:00 PM Excessive Heat Watch 7:00 PM

Greene County, Illinois, United States

Last updated: 8:56 AM CDT  ·  Refresh
28°C
Feels like 32°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
4 mph SSW
Humidity
89%
Dew Point
26°
Pressure
29.35 inHg
Visibility
6 mi
UV Index
6.2
Cloud Cover
47%
Sunrise
5:56 AM
Sunset
8:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Greene County is currently partly cloudy at 28°C. Precipitation is likely — peak probability 57% around 4 PM. Atmospheric instability is elevated (CAPE up to 4427 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:19PM.

Alerts

Excessive Heat 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, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 9:00 PM
Excessive Heat Watch
Expires 7:00 PM
54 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
13%
9 AM
31°
23%
10 AM
32°
37%
11 AM
33°
37%
12 PM
34°
36%
1 PM
36°
40%
2 PM
35°
48%
3 PM
35°
48%
4 PM
34°
57%
5 PM
35°
51%
6 PM
34°
38%
7 PM
32°
33%
8 PM
30°
34%
9 PM
27°
17%
10 PM
27°
8%
11 PM
26°
8%
12 AM
26°
3%
1 AM
26°
3%
2 AM
25°
3%
3 AM
25°
3%
4 AM
25°
3%
5 AM
24°
3%
6 AM
25°
3%
7 AM
26°
9%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 51% chance of rain.
Mon
38° 24°
Partly Cloudy with a 29% chance of rain.
Tue
34° 20°
Partly Cloudy.
Wed
31° 18°
Partly Cloudy.
Thu
32° 18°
Clear with a 29% chance of rain.
Fri
28° 19°
Rain, 71% chance.
Sat
31° 18°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Partly Cloudy 13% 4 mph SSW 89%
9 AM 31° Partly Cloudy 23% 4 mph WSW 81%
10 AM 32° Mostly Clear 37% 5 mph W 75%
11 AM 33° Partly Cloudy 37% 5 mph W 69%
12 PM 34° Mostly Clear 36% 5 mph W 64%
1 PM 36° Partly Cloudy 40% 7 mph W 63%
2 PM 35° Partly Cloudy 48% 9 mph W 62%
3 PM 35° Partly Cloudy 48% 12 mph W 60%
4 PM 34° Partly Cloudy 57% 10 mph W 62%
5 PM 35° Mostly Cloudy 51% 7 mph W 64%
6 PM 34° Mostly Cloudy 38% 6 mph WSW 68%
7 PM 32° Partly Cloudy 33% 5 mph SSW 73%
8 PM 30° Mostly Clear 34% 6 mph S 78%
9 PM 27° Partly Cloudy 17% 8 mph S 82%
10 PM 27° Mostly Clear 8% 8 mph S 81%
11 PM 26° Mostly Clear 8% 6 mph SSW 79%
12 AM 26° Partly Cloudy 3% 6 mph SSW 78%
1 AM 26° Partly Cloudy 3% 6 mph SSW 80%
2 AM 25° Partly Cloudy 3% 5 mph S 83%
3 AM 25° Partly Cloudy 3% 6 mph S 85%
4 AM 25° Partly Cloudy 3% 5 mph SSE 86%
5 AM 24° Mostly Cloudy 3% 5 mph SE 88%
6 AM 25° Mostly Cloudy 3% 5 mph ESE 90%
7 AM 26° Mostly Cloudy 9% 5 mph SE 86%
15-Day Forecast
Today
7/26
Partly Cloudy
51%
24°
37°
Mon
7/27
Partly Cloudy
29%
24°
38°
Tue
7/28
Partly Cloudy
16%
20°
34°
Wed
7/29
Partly Cloudy
7%
18°
31°
Thu
7/30
Clear
29%
18°
32°
Fri
7/31
Rain
71%
19°
28°
Sat
8/1
Drizzle
52%
18°
31°
Sun
8/2
Drizzle
43%
19°
31°
Mon
8/3
Drizzle
44%
19°
33°
Tue
8/4
Drizzle
51%
21°
36°
Wed
8/5
Drizzle
60%
21°
35°
Thu
8/6
Drizzle
60%
19°
33°
Fri
8/7
Drizzle
60%
19°
33°
Sat
8/8
Drizzle
60%
19°
34°
Sun
8/9
Drizzle
60%
21°
34°
54
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
54 AQI 10.6 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 54 Moderate 36 54
Tue 42 Good 34 42
Wed 43 Good 43 41
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 Sun Jul 26, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3483 J/kg
MLCAPE3020 J/kg
MUCAPE3483 J/kg
SBCIN-72 J/kg
MLCIN0 J/kg
Lifted Index-6.4
Kinematics
0–6 km Shear17 kt
0–1 km Shear15 kt
Eff. Shear26 kt
0–1 km SRH-24
0–3 km SRH-51
Eff. SRH-51
Storm Motion281° @ 19 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.3
Thermo & Levels
PWAT1.86 in
0–3 km LR5.0 °C/km
700–500 LR6.1 °C/km
Total Totals48.5
LCL965 hPa
LFC866 hPa
EL150 hPa
Freezing Lvl16,365 ft