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: 6:26 AM CDT  ·  Refresh
23°C
Feels like 27°
Mostly Cloudy
▲ 35°  /  ▼ 23°
Wind
2 mph S
Humidity
97%
Dew Point
23°
Pressure
29.30 inHg
Visibility
4 mi
UV Index
1.4
Cloud Cover
77%
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 23°C. Precipitation is likely — peak probability 58% around 5 PM. Atmospheric instability is elevated (CAPE up to 4143 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
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
34%
7 AM
24°
49%
8 AM
26°
42%
9 AM
27°
23%
10 AM
29°
46%
11 AM
31°
36%
12 PM
32°
40%
1 PM
34°
44%
2 PM
33°
44%
3 PM
33°
45%
4 PM
33°
53%
5 PM
33°
57%
6 PM
31°
57%
7 PM
29°
47%
8 PM
28°
37%
9 PM
26°
29%
10 PM
26°
8%
11 PM
25°
8%
12 AM
25°
3%
1 AM
24°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
7-Day Forecast
Today
35° 23°
Mostly Cloudy with a 57% chance of rain.
Mon
36° 23°
Partly Cloudy.
Tue
33° 19°
Partly Cloudy with a 30% chance of rain.
Wed
30° 18°
Mostly Clear.
Thu
29° 18°
Partly Cloudy.
Fri
27° 19°
Rain, 57% chance.
Sat
30° 18°
Drizzle, 56% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 34% 2 mph S 97%
7 AM 24° Overcast 49% 3 mph SSW 96%
8 AM 26° Overcast 42% 4 mph SSW 93%
9 AM 27° Mostly Cloudy 23% 4 mph SSW 89%
10 AM 29° Mostly Cloudy 46% 4 mph SW 83%
11 AM 31° Partly Cloudy 36% 4 mph SW 76%
12 PM 32° Partly Cloudy 40% 5 mph WSW 69%
1 PM 34° Mostly Cloudy 44% 5 mph WSW 65%
2 PM 33° Mostly Cloudy 44% 6 mph WSW 66%
3 PM 33° Overcast 45% 7 mph WSW 68%
4 PM 33° Mostly Cloudy 53% 7 mph WSW 70%
5 PM 33° Mostly Cloudy 57% 7 mph SW 73%
6 PM 31° Mostly Cloudy 57% 8 mph S 79%
7 PM 29° Partly Cloudy 47% 8 mph S 83%
8 PM 28° Partly Cloudy 37% 8 mph S 84%
9 PM 26° Mostly Clear 29% 8 mph SSW 85%
10 PM 26° Mostly Clear 8% 8 mph SSW 86%
11 PM 25° Partly Cloudy 8% 7 mph SSW 86%
12 AM 25° Partly Cloudy 3% 6 mph SSW 85%
1 AM 24° Partly Cloudy 3% 6 mph S 86%
2 AM 24° Partly Cloudy 3% 6 mph S 89%
3 AM 24° Partly Cloudy 3% 6 mph S 91%
4 AM 24° Partly Cloudy 3% 6 mph S 92%
5 AM 23° Partly Cloudy 3% 6 mph SSE 92%
15-Day Forecast
Today
7/26
Mostly Cloudy
57%
23°
35°
Mon
7/27
Partly Cloudy
16%
23°
36°
Tue
7/28
Partly Cloudy
30%
19°
33°
Wed
7/29
Mostly Clear
7%
18°
30°
Thu
7/30
Partly Cloudy
15%
18°
29°
Fri
7/31
Rain
57%
19°
27°
Sat
8/1
Drizzle
56%
18°
30°
Sun
8/2
Clear
38%
18°
29°
Mon
8/3
Clear
40%
18°
31°
Tue
8/4
Drizzle
40%
20°
31°
Wed
8/5
Drizzle
60%
21°
32°
Thu
8/6
Drizzle
60%
20°
32°
Fri
8/7
Drizzle
60%
19°
31°
Sat
8/8
Drizzle
60%
19°
32°
Sun
8/9
Drizzle
60%
21°
33°
43
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
43 AQI 7.8 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 36 43
Mon 58 Moderate 46 58
Tue 55 Moderate 41 55
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, 10:00'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
SBCAPE767 J/kg
MLCAPE2077 J/kg
MUCAPE2998 J/kg
SBCIN-380 J/kg
MLCIN0 J/kg
Lifted Index-1.8
Kinematics
0–6 km Shear17 kt
0–1 km Shear17 kt
Eff. Shear25 kt
0–1 km SRH19
0–3 km SRH3
Eff. SRH-33
Storm Motion303° @ 25 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index28.1
Thermo & Levels
PWAT1.71 in
0–3 km LR3.7 °C/km
700–500 LR6.2 °C/km
Total Totals47.4
LCL986 hPa
LFC666 hPa
EL202 hPa
Freezing Lvl16,302 ft