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

Macoupin County, Illinois, United States

Last updated: 5:10 AM CDT  ·  Refresh
23°C
Feels like 27°
Mostly Cloudy
▲ 35°  /  ▼ 23°
Wind
4 mph SSE
Humidity
97%
Dew Point
22°
Pressure
29.30 inHg
Visibility
5 mi
UV Index
0.0
Cloud Cover
68%
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 63% around 2 PM. Atmospheric instability is elevated (CAPE up to 4140 J/kg) — isolated convective development possible. Sunrise: 5:54AM · Sunset: 8:17PM.

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
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
13%
6 AM
23°
41%
7 AM
23°
41%
8 AM
26°
34%
9 AM
27°
26%
10 AM
29°
43%
11 AM
30°
54%
12 PM
31°
59%
1 PM
33°
63%
2 PM
33°
63%
3 PM
33°
53%
4 PM
33°
53%
5 PM
33°
51%
6 PM
32°
47%
7 PM
30°
37%
8 PM
29°
38%
9 PM
27°
33%
10 PM
26°
8%
11 PM
26°
8%
12 AM
25°
3%
1 AM
25°
3%
2 AM
25°
3%
3 AM
25°
3%
4 AM
24°
3%
7-Day Forecast
Today
35° 23°
Mostly Cloudy with a 63% chance of rain.
Mon
35° 23°
Partly Cloudy with a 21% chance of rain.
Tue
33° 19°
Partly Cloudy.
Wed
30° 18°
Mostly Clear.
Thu
29° 18°
Mostly Cloudy with a 26% chance of rain.
Fri
32° 20°
Drizzle, 57% chance.
Sat
29° 18°
Drizzle, 56% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 13% 4 mph SSE 97%
6 AM 23° Mostly Cloudy 41% 3 mph S 97%
7 AM 23° Overcast 41% 4 mph SSW 97%
8 AM 26° Overcast 34% 4 mph SW 93%
9 AM 27° Overcast 26% 4 mph SW 89%
10 AM 29° Mostly Cloudy 43% 4 mph SW 84%
11 AM 30° Partly Cloudy 54% 5 mph W 78%
12 PM 31° Mostly Cloudy 59% 5 mph W 74%
1 PM 33° Mostly Cloudy 63% 4 mph W 70%
2 PM 33° Partly Cloudy 63% 6 mph WSW 71%
3 PM 33° Mostly Cloudy 53% 7 mph WSW 71%
4 PM 33° Mostly Cloudy 53% 7 mph WSW 72%
5 PM 33° Mostly Cloudy 51% 6 mph SW 74%
6 PM 32° Partly Cloudy 47% 7 mph SSW 77%
7 PM 30° Partly Cloudy 37% 10 mph SSW 81%
8 PM 29° Partly Cloudy 38% 8 mph S 83%
9 PM 27° Mostly Clear 33% 8 mph S 85%
10 PM 26° Mostly Clear 8% 8 mph SSW 86%
11 PM 26° Mostly Clear 8% 8 mph SSW 86%
12 AM 25° Partly Cloudy 3% 7 mph SSW 86%
1 AM 25° Partly Cloudy 3% 7 mph SSW 86%
2 AM 25° Partly Cloudy 3% 7 mph SSW 88%
3 AM 25° Partly Cloudy 3% 6 mph SSW 89%
4 AM 24° Mostly Cloudy 3% 6 mph S 90%
15-Day Forecast
Today
7/26
Mostly Cloudy
63%
23°
35°
Mon
7/27
Partly Cloudy
21%
23°
35°
Tue
7/28
Partly Cloudy
18%
19°
33°
Wed
7/29
Mostly Clear
7%
18°
30°
Thu
7/30
Mostly Cloudy
26%
18°
29°
Fri
7/31
Drizzle
57%
20°
32°
Sat
8/1
Drizzle
56%
18°
29°
Sun
8/2
Rain
53%
18°
28°
Mon
8/3
Drizzle
40%
18°
30°
Tue
8/4
Rain
56%
20°
31°
Wed
8/5
Drizzle
60%
21°
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°
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, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE495 J/kg
MLCAPE1964 J/kg
MUCAPE2683 J/kg
SBCIN-457 J/kg
MLCIN0 J/kg
Lifted Index-1.2
Kinematics
0–6 km Shear30 kt
0–1 km Shear18 kt
Eff. Shear33 kt
0–1 km SRH81
0–3 km SRH55
Eff. SRH4
Storm Motion310° @ 28 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.3
STP (eff)0.0
Supercell0.2
K-Index19.5
Thermo & Levels
PWAT1.48 in
0–3 km LR3.6 °C/km
700–500 LR6.2 °C/km
Total Totals46.9
LCL986 hPa
LFC663 hPa
EL206 hPa
Freezing Lvl16,411 ft