Frost Advisory — Greene, IL, Macoupin, IL, Montgomery, 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 9:00 AM

Shelby County, Missouri, United States

Last updated: 7:31 PM CDT  ·  Refresh
9°C
Feels like 7°
Partly Cloudy
▲ 12°  /  ▼ 1°
Wind
14 mph NNW
Humidity
64%
Dew Point
4°
Pressure
29.62 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
54%
Sunrise
7:18 AM
Sunset
6:27 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Shelby County is currently partly cloudy at 10°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:18AM · Sunset: 6:27PM.

Alerts

Frost Advisory
Greene, IL, Macoupin, IL, Montgomery, 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
Expires 9:00 AM
23 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
8%
8 PM
9°
8%
9 PM
8°
3%
10 PM
7°
3%
11 PM
6°
3%
12 AM
6°
3%
1 AM
5°
3%
2 AM
4°
3%
3 AM
3°
3%
4 AM
3°
3%
5 AM
1°
3%
6 AM
1°
3%
7 AM
1°
3%
8 AM
3°
3%
9 AM
6°
3%
10 AM
8°
3%
11 AM
9°
3%
12 PM
11°
3%
1 PM
14°
3%
2 PM
14°
3%
3 PM
14°
3%
4 PM
14°
3%
5 PM
11°
3%
6 PM
10°
3%
7-Day Forecast
Tonight
12° 1°
Partly Cloudy.
Sat
15° 1°
Clear.
Sun
21° 2°
Clear.
Mon
24° 4°
Clear.
Tue
26° 8°
Clear.
Wed
27° 11°
Clear.
Thu
28° 12°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 9° Partly Cloudy 8% 14 mph NNW 64%
8 PM 9° Mostly Clear 8% 12 mph NNW 66%
9 PM 8° Mostly Clear 3% 10 mph NNW 68%
10 PM 7° Mostly Clear 3% 10 mph N 70%
11 PM 6° Clear 3% 10 mph N 72%
12 AM 6° Clear 3% 9 mph N 75%
1 AM 5° Clear 3% 8 mph N 78%
2 AM 4° Clear 3% 7 mph N 82%
3 AM 3° Clear 3% 6 mph N 84%
4 AM 3° Clear 3% 6 mph N 87%
5 AM 1° Clear 3% 5 mph N 88%
6 AM 1° Clear 3% 4 mph N 89%
7 AM 1° Clear 3% 3 mph N 86%
8 AM 3° Clear 3% 2 mph NNE 78%
9 AM 6° Clear 3% 2 mph ENE 68%
10 AM 8° Clear 3% 2 mph E 59%
11 AM 9° Clear 3% 2 mph ESE 52%
12 PM 11° Clear 3% 2 mph SSE 45%
1 PM 14° Clear 3% 2 mph S 40%
2 PM 14° Clear 3% 2 mph S 38%
3 PM 14° Clear 3% 3 mph S 36%
4 PM 14° Clear 3% 3 mph S 37%
5 PM 11° Clear 3% 4 mph S 39%
6 PM 10° Clear 3% 4 mph S 42%
15-Day Forecast
Today
10/16
Partly Cloudy
8%
1°
12°
Sat
10/17
Clear
3%
1°
15°
Sun
10/18
Clear
3%
2°
21°
Mon
10/19
Clear
3%
4°
24°
Tue
10/20
Clear
3%
8°
26°
Wed
10/21
Clear
8%
11°
27°
Thu
10/22
Clear
8%
12°
28°
Fri
10/23
Clear
8%
13°
29°
Sat
10/24
Drizzle
44%
12°
28°
Sun
10/25
Drizzle
44%
9°
22°
Mon
10/26
Clear
25%
8°
23°
Tue
10/27
Drizzle
60%
8°
19°
Wed
10/28
Drizzle
60%
7°
20°
Thu
10/29
Drizzle
60%
8°
21°
Fri
10/30
Drizzle
60%
8°
20°
23
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
16 AQI 2.9 µg/m³
O3
Ground-level ozone
Dominant
23 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 23 Good 23 16
Sun 29 Good 29 9
Mon 30 Good 30 26
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 Oct 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2 J/kg
MLCAPE7 J/kg
MUCAPE19 J/kg
SBCIN-71 J/kg
MLCIN-19 J/kg
Lifted Index15.2
Kinematics
0–6 km Shear53 kt
0–1 km Shear20 kt
Eff. Shear—
0–1 km SRH114
0–3 km SRH103
Eff. SRH—
Storm Motion23° @ 41 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-4.5
Thermo & Levels
PWAT0.42 in
0–3 km LR5.6 °C/km
700–500 LR3.8 °C/km
Total Totals29.7
LCL916 hPa
LFC854 hPa
EL822 hPa
Freezing Lvl3,944 ft