Heat Advisory — Greene, IL, Macoupin, IL, Montgomery, IL, Fayette, IL, Calhoun, IL, Jersey, IL, Boone, MO, Callaway, MO, Montgomery, MO, Lincoln, MO 8:00 PM

Macoupin County, Illinois, United States

Last updated: 6:43 AM CDT  ·  Refresh
22°C
Feels like 24°
Partly Cloudy
▲ 33°  /  ▼ 21°
Wind
6 mph NE
Humidity
94%
Dew Point
21°
Pressure
29.53 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
34%
Sunrise
6:43 AM
Sunset
7:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Macoupin County is currently partly cloudy at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1732 J/kg) — isolated convective development possible. Sunrise: 6:43AM · Sunset: 7:03PM.

Alerts

Heat Advisory
Greene, IL, Macoupin, IL, Montgomery, IL, Fayette, IL, Calhoun, IL, Jersey, IL, Boone, MO, Callaway, MO, Montgomery, MO, Lincoln, MO
Expires 8:00 PM
46 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
12%
7 AM
22°
29%
8 AM
23°
29%
9 AM
24°
29%
10 AM
27°
21%
11 AM
29°
21%
12 PM
31°
15%
1 PM
33°
29%
2 PM
33°
33%
3 PM
33°
33%
4 PM
33°
44%
5 PM
33°
44%
6 PM
31°
44%
7 PM
29°
45%
8 PM
28°
45%
9 PM
26°
42%
10 PM
24°
35%
11 PM
24°
35%
12 AM
24°
27%
1 AM
23°
22%
2 AM
23°
22%
3 AM
23°
22%
4 AM
23°
14%
5 AM
22°
14%
7-Day Forecast
Today
33° 21°
Rain, 44% chance.
Sat
36° 21°
Mostly Cloudy with a 27% chance of rain.
Sun
34° 19°
Overcast with a 66% chance of rain.
Mon
26° 16°
Partly Cloudy with a 76% chance of rain.
Tue
22° 13°
Partly Cloudy with a 34% chance of rain.
Wed
25° 13°
Mostly Cloudy.
Thu
24° 12°
Overcast.
TimeTempConditionsPrecipWindHumidity
Now 22° Partly Cloudy 12% 6 mph NE 94%
7 AM 22° Partly Cloudy 29% 7 mph ENE 90%
8 AM 23° Partly Cloudy 29% 7 mph ENE 84%
9 AM 24° Partly Cloudy 29% 7 mph E 79%
10 AM 27° Mostly Clear 21% 6 mph E 72%
11 AM 29° Clear 21% 5 mph E 64%
12 PM 31° Clear 15% 5 mph E 58%
1 PM 33° Clear 29% 5 mph ESE 55%
2 PM 33° Mostly Clear 33% 5 mph SE 55%
3 PM 33° Partly Cloudy 33% 5 mph SE 55%
4 PM 33° Partly Cloudy 44% 4 mph E 58%
5 PM 33° Partly Cloudy 44% 5 mph NE 62%
6 PM 31° Rain 44% 8 mph NE 68%
7 PM 29° Rain 45% 7 mph NE 73%
8 PM 28° Drizzle 45% 5 mph E 77%
9 PM 26° Partly Cloudy 42% 6 mph ESE 81%
10 PM 24° Partly Cloudy 35% 8 mph ESE 85%
11 PM 24° Mostly Clear 35% 7 mph ESE 87%
12 AM 24° Mostly Clear 27% 7 mph SE 88%
1 AM 23° Mostly Clear 22% 7 mph SE 88%
2 AM 23° Partly Cloudy 22% 7 mph SE 88%
3 AM 23° Partly Cloudy 22% 7 mph SE 88%
4 AM 23° Partly Cloudy 14% 7 mph SSE 89%
5 AM 22° Partly Cloudy 14% 7 mph SSE 89%
15-Day Forecast
Today
9/18
Rain
44%
21°
33°
Sat
9/19
Mostly Cloudy
27%
21°
36°
Sun
9/20
Overcast
66%
19°
34°
Mon
9/21
Partly Cloudy
76%
16°
26°
Tue
9/22
Partly Cloudy
34%
13°
22°
Wed
9/23
Mostly Cloudy
5%
13°
25°
Thu
9/24
Overcast
8%
12°
24°
Fri
9/25
Overcast
40%
13°
23°
Sat
9/26
Mostly Clear
27%
13°
24°
Sun
9/27
Drizzle
54%
13°
25°
Mon
9/28
Clear
46%
14°
28°
Tue
9/29
Drizzle
60%
15°
28°
Wed
9/30
Drizzle
60%
15°
29°
Thu
10/1
Clear
60%
15°
28°
Fri
10/2
Drizzle
60%
13°
26°
46
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
44 AQI 7.9 µg/m³
O3
Ground-level ozone
Dominant
46 AQI 50 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 46 Good 46 44
Sun 51 Moderate 44 51
Mon 44 Good 44 38
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 Fri Sep 18, 10:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE35 J/kg
MLCAPE191 J/kg
MUCAPE981 J/kg
SBCIN-473 J/kg
MLCIN-291 J/kg
Lifted Index-0.2
Kinematics
0–6 km Shear19 kt
0–1 km Shear15 kt
Eff. Shear8 kt
0–1 km SRH61
0–3 km SRH38
Eff. SRH1
Storm Motion328° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index41.2
Thermo & Levels
PWAT1.77 in
0–3 km LR4.2 °C/km
700–500 LR5.7 °C/km
Total Totals50.6
LCL987 hPa
LFC654 hPa
EL466 hPa
Freezing Lvl14,636 ft