Heat Advisory — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, 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, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 8:00 PM

Macoupin County, Illinois, United States

Last updated: 5:12 AM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Clear
▲ 34°  /  ▼ 23°
Wind
6 mph SSW
Humidity
83%
Dew Point
22°
Pressure
29.33 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
26%
Sunrise
6:09 AM
Sunset
8:00 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Macoupin County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3491 J/kg) — isolated convective development possible. Sunrise: 6:09AM · Sunset: 8:00PM.

Alerts

Heat Advisory
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, 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, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 8:00 PM
48 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
8%
6 AM
24°
25%
7 AM
24°
25%
8 AM
26°
25%
9 AM
27°
25%
10 AM
29°
23%
11 AM
30°
23%
12 PM
32°
24%
1 PM
33°
6%
2 PM
34°
13%
3 PM
34°
21%
4 PM
34°
32%
5 PM
34°
33%
6 PM
33°
31%
7 PM
32°
29%
8 PM
31°
30%
9 PM
29°
30%
10 PM
28°
22%
11 PM
27°
22%
12 AM
26°
14%
1 AM
26°
8%
2 AM
26°
9%
3 AM
26°
9%
4 AM
24°
9%
7-Day Forecast
Today
34° 23°
Partly Cloudy with a 33% chance of rain.
Wed
33° 23°
Partly Cloudy with a 67% chance of rain.
Thu
33° 23°
Partly Cloudy with a 59% chance of rain.
Fri
29° 22°
Overcast with a 58% chance of rain.
Sat
33° 22°
Partly Cloudy.
Sun
33° 21°
Drizzle, 49% chance.
Mon
28° 19°
Clear with a 47% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 8% 6 mph SSW 83%
6 AM 24° Partly Cloudy 25% 8 mph SSW 80%
7 AM 24° Partly Cloudy 25% 8 mph SW 80%
8 AM 26° Partly Cloudy 25% 9 mph SW 76%
9 AM 27° Mostly Cloudy 25% 10 mph WSW 72%
10 AM 29° Partly Cloudy 23% 10 mph WSW 68%
11 AM 30° Partly Cloudy 23% 11 mph WSW 64%
12 PM 32° Partly Cloudy 24% 12 mph WSW 60%
1 PM 33° Partly Cloudy 6% 13 mph SW 56%
2 PM 34° Partly Cloudy 13% 13 mph SW 54%
3 PM 34° Mostly Clear 21% 13 mph SW 53%
4 PM 34° Mostly Clear 32% 12 mph SW 53%
5 PM 34° Partly Cloudy 33% 11 mph SW 56%
6 PM 33° Partly Cloudy 31% 9 mph SW 60%
7 PM 32° Partly Cloudy 29% 6 mph SW 65%
8 PM 31° Partly Cloudy 30% 6 mph SW 67%
9 PM 29° Partly Cloudy 30% 6 mph SW 68%
10 PM 28° Mostly Clear 22% 6 mph SW 69%
11 PM 27° Mostly Clear 22% 5 mph SSW 72%
12 AM 26° Mostly Clear 14% 6 mph SSW 74%
1 AM 26° Mostly Clear 8% 6 mph SSW 75%
2 AM 26° Mostly Clear 9% 6 mph SSW 77%
3 AM 26° Mostly Clear 9% 5 mph SSW 78%
4 AM 24° Mostly Clear 9% 5 mph SSW 80%
15-Day Forecast
Today
8/11
Partly Cloudy
33%
23°
34°
Wed
8/12
Partly Cloudy
67%
23°
33°
Thu
8/13
Partly Cloudy
59%
23°
33°
Fri
8/14
Overcast
58%
22°
29°
Sat
8/15
Partly Cloudy
15%
22°
33°
Sun
8/16
Drizzle
49%
21°
33°
Mon
8/17
Clear
47%
19°
28°
Tue
8/18
Clear
34%
20°
32°
Wed
8/19
Partly Cloudy
35%
22°
33°
Thu
8/20
Clear
32%
22°
36°
Fri
8/21
Drizzle
60%
19°
36°
Sat
8/22
Drizzle
60%
19°
32°
Sun
8/23
Clear
60%
19°
31°
Mon
8/24
Drizzle
60%
18°
29°
Tue
8/25
Drizzle
60%
18°
29°
48
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
48 AQI 8.6 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 48 Good 36 48
Wed 32 Good 32 29
Thu 35 Good 35 31
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 Tue Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1796 J/kg
MLCAPE1777 J/kg
MUCAPE2266 J/kg
SBCIN-513 J/kg
MLCIN0 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear18 kt
0–1 km Shear21 kt
Eff. Shear9 kt
0–1 km SRH159
0–3 km SRH140
Eff. SRH-1
Storm Motion313° @ 19 kt
0–1 km EHI1.8
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.2
Thermo & Levels
PWAT1.44 in
0–3 km LR3.9 °C/km
700–500 LR8.1 °C/km
Total Totals52.5
LCL963 hPa
LFC661 hPa
EL177 hPa
Freezing Lvl14,593 ft