Extreme 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: 10:11 AM CDT  ·  Refresh
31°C
Feels like 38°
Partly Cloudy
▲ 38°  /  ▼ 24°
Wind
4 mph WSW
Humidity
76%
Dew Point
26°
Pressure
29.34 inHg
Visibility
9 mi
UV Index
7.8
Cloud Cover
38%
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 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4173 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:19PM.

Alerts

Extreme 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
31°
3%
11 AM
33°
21%
12 PM
34°
21%
1 PM
36°
21%
2 PM
37°
26%
3 PM
37°
26%
4 PM
38°
43%
5 PM
38°
48%
6 PM
37°
42%
7 PM
34°
30%
8 PM
32°
30%
9 PM
29°
30%
10 PM
28°
8%
11 PM
27°
8%
12 AM
26°
5%
1 AM
25°
3%
2 AM
25°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
9%
9 AM
29°
10%
7-Day Forecast
Today
38° 24°
Partly Cloudy with a 43% chance of rain.
Mon
38° 24°
Mostly Clear with a 21% chance of rain.
Tue
34° 21°
Mostly Cloudy.
Wed
31° 18°
Clear.
Thu
32° 18°
Rain, 30% chance.
Fri
28° 19°
Drizzle, 71% chance.
Sat
31° 18°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 3% 4 mph WSW 76%
11 AM 33° Partly Cloudy 21% 5 mph WSW 70%
12 PM 34° Mostly Clear 21% 6 mph WSW 64%
1 PM 36° Mostly Clear 21% 7 mph WSW 59%
2 PM 37° Partly Cloudy 26% 8 mph WSW 56%
3 PM 37° Mostly Clear 26% 7 mph WSW 55%
4 PM 38° Partly Cloudy 43% 8 mph WSW 54%
5 PM 38° Mostly Cloudy 48% 8 mph WSW 56%
6 PM 37° Partly Cloudy 42% 8 mph W 58%
7 PM 34° Mostly Cloudy 30% 7 mph W 63%
8 PM 32° Mostly Cloudy 30% 6 mph S 69%
9 PM 29° Partly Cloudy 30% 6 mph S 75%
10 PM 28° Partly Cloudy 8% 6 mph SSE 79%
11 PM 27° Mostly Clear 8% 6 mph S 80%
12 AM 26° Mostly Clear 5% 5 mph S 81%
1 AM 25° Mostly Clear 3% 4 mph S 82%
2 AM 25° Mostly Clear 3% 4 mph S 83%
3 AM 24° Mostly Clear 3% 4 mph S 85%
4 AM 24° Mostly Clear 3% 5 mph S 87%
5 AM 24° Mostly Clear 3% 5 mph S 87%
6 AM 24° Mostly Clear 3% 5 mph SSE 88%
7 AM 24° Mostly Clear 3% 5 mph SSE 88%
8 AM 26° Mostly Clear 9% 5 mph S 83%
9 AM 29° Mostly Clear 10% 7 mph S 79%
15-Day Forecast
Today
7/26
Partly Cloudy
43%
24°
38°
Mon
7/27
Mostly Clear
21%
24°
38°
Tue
7/28
Mostly Cloudy
17%
21°
34°
Wed
7/29
Clear
10%
18°
31°
Thu
7/30
Rain
30%
18°
32°
Fri
7/31
Drizzle
71%
19°
28°
Sat
8/1
Clear
52%
18°
31°
Sun
8/2
Drizzle
43%
19°
31°
Mon
8/3
Drizzle
44%
19°
32°
Tue
8/4
Drizzle
51%
21°
36°
Wed
8/5
Drizzle
60%
21°
35°
Thu
8/6
Drizzle
60%
20°
33°
Fri
8/7
Drizzle
60%
19°
33°
Sat
8/8
Drizzle
60%
20°
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, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE4694 J/kg
MLCAPE3634 J/kg
MUCAPE4694 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.4
Kinematics
0–6 km Shear17 kt
0–1 km Shear9 kt
Eff. Shear23 kt
0–1 km SRH-4
0–3 km SRH-48
Eff. SRH-48
Storm Motion276° @ 20 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.1
Thermo & Levels
PWAT1.81 in
0–3 km LR6.0 °C/km
700–500 LR6.2 °C/km
Total Totals48.4
LCL934 hPa
LFC994 hPa
EL135 hPa
Freezing Lvl16,516 ft