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

Montgomery County, Illinois, United States

Last updated: 7:44 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Cloudy
▲ 34°  /  ▼ 22°
Wind
4 mph S
Humidity
96%
Dew Point
23°
Pressure
29.28 inHg
Visibility
3 mi
UV Index
3.0
Cloud Cover
80%
Sunrise
5:53 AM
Sunset
8:15 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently mostly cloudy at 24°C. Precipitation is likely — peak probability 65% around 8 AM. Atmospheric instability is elevated (CAPE up to 4395 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 8:15PM.

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°
32%
8 AM
25°
65%
9 AM
27°
33%
10 AM
28°
32%
11 AM
30°
33%
12 PM
32°
30%
1 PM
33°
32%
2 PM
34°
40%
3 PM
34°
41%
4 PM
33°
62%
5 PM
33°
63%
6 PM
31°
63%
7 PM
29°
55%
8 PM
28°
51%
9 PM
26°
39%
10 PM
25°
19%
11 PM
24°
11%
12 AM
24°
5%
1 AM
24°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
23°
3%
5 AM
23°
3%
6 AM
23°
3%
7-Day Forecast
Today
34° 22°
Mostly Cloudy with a 62% chance of rain.
Mon
34° 22°
Mostly Clear with a 30% chance of rain.
Tue
32° 19°
Partly Cloudy with a 26% chance of rain.
Wed
29° 17°
Mostly Clear.
Thu
29° 17°
Clear.
Fri
27° 19°
Drizzle, 52% chance.
Sat
29° 17°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 32% 4 mph S 96%
8 AM 25° Fog 65% 4 mph S 94%
9 AM 27° Overcast 33% 5 mph S 90%
10 AM 28° Mostly Cloudy 32% 5 mph S 84%
11 AM 30° Partly Cloudy 33% 5 mph SSW 79%
12 PM 32° Partly Cloudy 30% 6 mph SW 73%
1 PM 33° Mostly Cloudy 32% 5 mph SW 70%
2 PM 34° Mostly Cloudy 40% 5 mph SW 67%
3 PM 34° Overcast 41% 5 mph WSW 65%
4 PM 33° Overcast 62% 6 mph SW 67%
5 PM 33° Mostly Cloudy 63% 6 mph SSW 72%
6 PM 31° Overcast 63% 7 mph SSW 80%
7 PM 29° Mostly Cloudy 55% 7 mph SSW 84%
8 PM 28° Partly Cloudy 51% 8 mph SW 85%
9 PM 26° Mostly Clear 39% 10 mph SW 87%
10 PM 25° Mostly Clear 19% 9 mph SW 88%
11 PM 24° Mostly Clear 11% 7 mph SSW 88%
12 AM 24° Partly Cloudy 5% 7 mph SSW 89%
1 AM 24° Partly Cloudy 3% 7 mph SSW 90%
2 AM 23° Partly Cloudy 3% 7 mph S 91%
3 AM 23° Mostly Cloudy 3% 7 mph S 93%
4 AM 23° Mostly Cloudy 3% 6 mph S 93%
5 AM 23° Partly Cloudy 3% 6 mph SSE 91%
6 AM 23° Partly Cloudy 3% 7 mph SSE 90%
15-Day Forecast
Today
7/26
Mostly Cloudy
62%
22°
34°
Mon
7/27
Mostly Clear
30%
22°
34°
Tue
7/28
Partly Cloudy
26%
19°
32°
Wed
7/29
Mostly Clear
7%
17°
29°
Thu
7/30
Clear
16%
17°
29°
Fri
7/31
Drizzle
52%
19°
27°
Sat
8/1
Drizzle
53%
17°
29°
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%
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°
32°
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 11.4 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 55 Moderate 36 55
Tue 55 Moderate 45 55
Wed 49 Good 42 49
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
SBCAPE1253 J/kg
MLCAPE2482 J/kg
MUCAPE3065 J/kg
SBCIN-247 J/kg
MLCIN0 J/kg
Lifted Index-2.3
Kinematics
0–6 km Shear21 kt
0–1 km Shear17 kt
Eff. Shear27 kt
0–1 km SRH-2
0–3 km SRH-20
Eff. SRH-20
Storm Motion300° @ 25 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.6
Thermo & Levels
PWAT1.84 in
0–3 km LR4.0 °C/km
700–500 LR5.9 °C/km
Total Totals47.3
LCL983 hPa
LFC689 hPa
EL189 hPa
Freezing Lvl16,447 ft