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

Adams County, Illinois, United States

Last updated: 8:56 AM CDT  ·  Refresh
28°C
Feels like 33°
Mostly Cloudy
▲ 37°  /  ▼ 24°
Wind
4 mph SW
Humidity
88%
Dew Point
26°
Pressure
29.18 inHg
Visibility
5 mi
UV Index
4.5
Cloud Cover
76%
Sunrise
5:58 AM
Sunset
8:24 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Adams County is currently mostly cloudy at 28°C. Precipitation is likely — peak probability 51% around 10 AM. Atmospheric instability is elevated (CAPE up to 4534 J/kg) — isolated convective development possible. Sunrise: 5:58AM · Sunset: 8:24PM.

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
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
16%
9 AM
30°
25%
10 AM
32°
50%
11 AM
33°
50%
12 PM
35°
49%
1 PM
36°
48%
2 PM
36°
48%
3 PM
35°
48%
4 PM
34°
49%
5 PM
34°
49%
6 PM
33°
43%
7 PM
32°
35%
8 PM
31°
22%
9 PM
30°
22%
10 PM
29°
14%
11 PM
28°
5%
12 AM
28°
3%
1 AM
27°
6%
2 AM
27°
6%
3 AM
27°
6%
4 AM
27°
6%
5 AM
26°
6%
6 AM
25°
3%
7 AM
26°
3%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 50% chance of rain.
Mon
39° 24°
Mostly Clear with a 36% chance of rain.
Tue
33° 21°
Mostly Cloudy.
Wed
32° 19°
Mostly Clear with a 37% chance of rain.
Thu
33° 18°
Clear with a 50% chance of rain.
Fri
29° 20°
Drizzle, 71% chance.
Sat
31° 19°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Cloudy 16% 4 mph SW 88%
9 AM 30° Mostly Cloudy 25% 5 mph W 80%
10 AM 32° Mostly Clear 50% 6 mph W 73%
11 AM 33° Mostly Clear 50% 7 mph W 67%
12 PM 35° Clear 49% 8 mph WSW 60%
1 PM 36° Partly Cloudy 48% 8 mph WSW 58%
2 PM 36° Partly Cloudy 48% 8 mph WSW 56%
3 PM 35° Partly Cloudy 48% 8 mph WSW 55%
4 PM 34° Partly Cloudy 49% 9 mph WSW 57%
5 PM 34° Mostly Cloudy 49% 10 mph W 59%
6 PM 33° Mostly Cloudy 43% 11 mph W 61%
7 PM 32° Partly Cloudy 35% 8 mph WSW 63%
8 PM 31° Partly Cloudy 22% 7 mph SW 64%
9 PM 30° Partly Cloudy 22% 7 mph SW 65%
10 PM 29° Partly Cloudy 14% 7 mph SW 68%
11 PM 28° Mostly Clear 5% 6 mph SSW 70%
12 AM 28° Mostly Clear 3% 7 mph SSW 73%
1 AM 27° Mostly Clear 6% 7 mph SSW 74%
2 AM 27° Partly Cloudy 6% 7 mph SW 74%
3 AM 27° Partly Cloudy 6% 8 mph SW 74%
4 AM 27° Mostly Cloudy 6% 6 mph SSW 78%
5 AM 26° Mostly Cloudy 6% 5 mph S 81%
6 AM 25° Mostly Cloudy 3% 7 mph SE 85%
7 AM 26° Mostly Cloudy 3% 6 mph SSE 81%
15-Day Forecast
Today
7/26
Partly Cloudy
50%
24°
37°
Mon
7/27
Mostly Clear
36%
24°
39°
Tue
7/28
Mostly Cloudy
14%
21°
33°
Wed
7/29
Mostly Clear
37%
19°
32°
Thu
7/30
Clear
50%
18°
33°
Fri
7/31
Drizzle
71%
20°
29°
Sat
8/1
Clear
52%
19°
31°
Sun
8/2
Drizzle
43%
19°
32°
Mon
8/3
Drizzle
44%
19°
34°
Tue
8/4
Drizzle
64%
22°
37°
Wed
8/5
Drizzle
64%
21°
35°
Thu
8/6
Drizzle
60%
20°
33°
Fri
8/7
Drizzle
60%
19°
33°
Sat
8/8
Drizzle
60%
21°
35°
Sun
8/9
Drizzle
60%
21°
34°
53
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
53 AQI 10.1 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 53 Moderate 42 53
Tue 49 Good 37 49
Wed 50 Good 40 50
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
SBCAPE4075 J/kg
MLCAPE3304 J/kg
MUCAPE4075 J/kg
SBCIN-131 J/kg
MLCIN0 J/kg
Lifted Index-8.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear12 kt
Eff. Shear26 kt
0–1 km SRH-19
0–3 km SRH-66
Eff. SRH-66
Storm Motion273° @ 19 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.5
Thermo & Levels
PWAT1.67 in
0–3 km LR5.2 °C/km
700–500 LR6.5 °C/km
Total Totals45.5
LCL960 hPa
LFC745 hPa
EL144 hPa
Freezing Lvl15,984 ft