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

Macoupin County, Illinois, United States

Last updated: 7:44 AM CDT  ·  Refresh
24°C
Feels like 29°
Mostly Cloudy
▲ 35°  /  ▼ 23°
Wind
3 mph SSW
Humidity
96%
Dew Point
24°
Pressure
29.31 inHg
Visibility
3 mi
UV Index
2.9
Cloud Cover
81%
Sunrise
5:54 AM
Sunset
8:17 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Macoupin County is currently mostly cloudy at 25°C. Precipitation is likely — peak probability 56% around 6 PM. Atmospheric instability is elevated (CAPE up to 4036 J/kg) — isolated convective development possible. Sunrise: 5:54AM · Sunset: 8:17PM.

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
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
53%
8 AM
27°
29%
9 AM
28°
16%
10 AM
30°
28%
11 AM
32°
34%
12 PM
33°
38%
1 PM
34°
43%
2 PM
34°
43%
3 PM
34°
43%
4 PM
33°
52%
5 PM
33°
50%
6 PM
32°
55%
7 PM
31°
51%
8 PM
28°
36%
9 PM
26°
31%
10 PM
25°
8%
11 PM
25°
8%
12 AM
24°
3%
1 AM
24°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7-Day Forecast
Today
35° 23°
Mostly Cloudy with a 53% chance of rain.
Mon
36° 23°
Mostly Clear.
Tue
33° 19°
Partly Cloudy with a 27% chance of rain.
Wed
30° 18°
Partly Cloudy.
Thu
29° 18°
Clear.
Fri
27° 19°
Rain, 64% chance.
Sat
30° 17°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 53% 3 mph SSW 96%
8 AM 27° Overcast 29% 4 mph SW 91%
9 AM 28° Mostly Cloudy 16% 5 mph SW 87%
10 AM 30° Partly Cloudy 28% 4 mph WSW 80%
11 AM 32° Partly Cloudy 34% 4 mph WSW 72%
12 PM 33° Partly Cloudy 38% 5 mph WSW 66%
1 PM 34° Mostly Cloudy 43% 6 mph WSW 65%
2 PM 34° Mostly Cloudy 43% 7 mph WSW 66%
3 PM 34° Overcast 43% 8 mph WSW 68%
4 PM 33° Overcast 52% 8 mph WSW 70%
5 PM 33° Mostly Cloudy 50% 8 mph SW 73%
6 PM 32° Mostly Cloudy 55% 7 mph S 79%
7 PM 31° Mostly Cloudy 51% 8 mph S 84%
8 PM 28° Mostly Cloudy 36% 8 mph S 85%
9 PM 26° Mostly Clear 31% 9 mph SSW 85%
10 PM 25° Mostly Clear 8% 7 mph SSW 86%
11 PM 25° Partly Cloudy 8% 6 mph SSW 85%
12 AM 24° Partly Cloudy 3% 6 mph S 85%
1 AM 24° Partly Cloudy 3% 6 mph S 88%
2 AM 24° Partly Cloudy 3% 6 mph S 90%
3 AM 24° Partly Cloudy 3% 6 mph S 93%
4 AM 24° Partly Cloudy 3% 6 mph SSE 93%
5 AM 23° Partly Cloudy 3% 6 mph SE 92%
6 AM 23° Partly Cloudy 3% 6 mph SE 92%
15-Day Forecast
Today
7/26
Mostly Cloudy
53%
23°
35°
Mon
7/27
Mostly Clear
15%
23°
36°
Tue
7/28
Partly Cloudy
27%
19°
33°
Wed
7/29
Partly Cloudy
7%
18°
30°
Thu
7/30
Clear
16%
18°
29°
Fri
7/31
Rain
64%
19°
27°
Sat
8/1
Drizzle
53%
17°
30°
Sun
8/2
Drizzle
42%
18°
29°
Mon
8/3
Drizzle
44%
18°
31°
Tue
8/4
Drizzle
51%
20°
32°
Wed
8/5
Drizzle
60%
20°
32°
Thu
8/6
Drizzle
60%
19°
32°
Fri
8/7
Drizzle
60%
19°
31°
Sat
8/8
Drizzle
60%
19°
32°
Sun
8/9
Drizzle
60%
21°
33°
55
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
55 AQI 11.1 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 55 Moderate 32 55
Tue 54 Moderate 38 54
Wed 45 Good 44 45
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 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1714 J/kg
MLCAPE2667 J/kg
MUCAPE3251 J/kg
SBCIN-225 J/kg
MLCIN0 J/kg
Lifted Index-3.2
Kinematics
0–6 km Shear16 kt
0–1 km Shear15 kt
Eff. Shear26 kt
0–1 km SRH-5
0–3 km SRH-30
Eff. SRH-30
Storm Motion296° @ 23 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.7
Thermo & Levels
PWAT1.83 in
0–3 km LR4.2 °C/km
700–500 LR5.9 °C/km
Total Totals47.2
LCL982 hPa
LFC701 hPa
EL182 hPa
Freezing Lvl16,493 ft