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

Knox County, Missouri, United States

Last updated: 7:44 AM CDT  ·  Refresh
27°C
Feels like 32°
Mostly Cloudy
▲ 38°  /  ▼ 24°
Wind
5 mph WSW
Humidity
93%
Dew Point
26°
Pressure
29.09 inHg
Visibility
9 mi
UV Index
3.0
Cloud Cover
77%
Sunrise
6:01 AM
Sunset
8:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Knox County is currently mostly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4420 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 8:28PM.

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
54 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
8 AM
28°
23%
9 AM
31°
14%
10 AM
32°
14%
11 AM
34°
14%
12 PM
36°
14%
1 PM
37°
15%
2 PM
37°
15%
3 PM
38°
15%
4 PM
37°
15%
5 PM
36°
16%
6 PM
33°
8%
7 PM
32°
3%
8 PM
31°
5%
9 PM
29°
5%
10 PM
28°
5%
11 PM
28°
5%
12 AM
28°
5%
1 AM
27°
14%
2 AM
27°
14%
3 AM
27°
14%
4 AM
27°
18%
5 AM
26°
22%
6 AM
26°
23%
7-Day Forecast
Today
38° 24°
Partly Cloudy.
Mon
39° 25°
Mostly Clear with a 25% chance of rain.
Tue
34° 21°
Partly Cloudy with a 28% chance of rain.
Wed
33° 19°
Mostly Clear with a 32% chance of rain.
Thu
34° 19°
Rain, 43% chance.
Fri
32° 21°
Rain, 82% chance.
Sat
32° 19°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Cloudy 11% 5 mph WSW 93%
8 AM 28° Mostly Cloudy 23% 6 mph WSW 85%
9 AM 31° Mostly Cloudy 14% 7 mph WSW 77%
10 AM 32° Partly Cloudy 14% 8 mph W 70%
11 AM 34° Partly Cloudy 14% 9 mph WSW 63%
12 PM 36° Partly Cloudy 14% 9 mph WSW 57%
1 PM 37° Mostly Clear 15% 9 mph WSW 53%
2 PM 37° Partly Cloudy 15% 10 mph WSW 50%
3 PM 38° Partly Cloudy 15% 10 mph WSW 46%
4 PM 37° Partly Cloudy 15% 8 mph WSW 49%
5 PM 36° Partly Cloudy 16% 7 mph SW 54%
6 PM 33° Partly Cloudy 8% 8 mph S 59%
7 PM 32° Mostly Clear 3% 8 mph SSE 62%
8 PM 31° Mostly Clear 5% 6 mph S 63%
9 PM 29° Mostly Cloudy 5% 7 mph SSW 64%
10 PM 28° Mostly Cloudy 5% 7 mph SSW 67%
11 PM 28° Partly Cloudy 5% 7 mph SW 70%
12 AM 28° Partly Cloudy 5% 8 mph SW 73%
1 AM 27° Partly Cloudy 14% 8 mph SW 74%
2 AM 27° Partly Cloudy 14% 8 mph SW 75%
3 AM 27° Partly Cloudy 14% 8 mph SW 75%
4 AM 27° Partly Cloudy 18% 8 mph SW 76%
5 AM 26° Rain 22% 8 mph SW 78%
6 AM 26° Rain 23% 9 mph SW 79%
15-Day Forecast
Today
7/26
Partly Cloudy
15%
24°
38°
Mon
7/27
Mostly Clear
25%
25°
39°
Tue
7/28
Partly Cloudy
28%
21°
34°
Wed
7/29
Mostly Clear
32%
19°
33°
Thu
7/30
Rain
43%
19°
34°
Fri
7/31
Rain
82%
21°
32°
Sat
8/1
Rain
63%
19°
32°
Sun
8/2
Clear
18%
18°
33°
Mon
8/3
Drizzle
44%
19°
34°
Tue
8/4
Rain
44%
21°
35°
Wed
8/5
Drizzle
68%
20°
36°
Thu
8/6
Drizzle
60%
19°
34°
Fri
8/7
Drizzle
60%
19°
34°
Sat
8/8
Drizzle
60%
21°
36°
Sun
8/9
Drizzle
60%
21°
36°
54
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
54 AQI 10.9 µg/m³
O3
Ground-level ozone
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 54 Moderate 42 54
Tue 53 Moderate 44 53
Wed 53 Moderate 43 53
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3403 J/kg
MLCAPE2905 J/kg
MUCAPE4029 J/kg
SBCIN-235 J/kg
MLCIN0 J/kg
Lifted Index-6.7
Kinematics
0–6 km Shear21 kt
0–1 km Shear15 kt
Eff. Shear23 kt
0–1 km SRH-22
0–3 km SRH-24
Eff. SRH-24
Storm Motion266° @ 19 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.5
Thermo & Levels
PWAT1.61 in
0–3 km LR4.7 °C/km
700–500 LR6.4 °C/km
Total Totals45.8
LCL969 hPa
LFC727 hPa
EL152 hPa
Freezing Lvl15,965 ft