Excessive Heat Watch 8:00 PM

Pettis County, Missouri, United States

Last updated: 3:46 AM CDT  ·  Refresh
21°C
Feels like 22°
Clear
▲ 32°  /  ▼ 22°
Wind
6 mph SSW
Humidity
91%
Dew Point
19°
Pressure
29.18 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:20 AM
Sunset
8:16 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Pettis County is currently clear at 21°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2828 J/kg) — isolated convective development possible. Sunrise: 6:20AM · Sunset: 8:16PM.

Alerts

Excessive Heat Watch
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
4 AM
19°
3%
5 AM
18°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
22°
3%
9 AM
22°
3%
10 AM
23°
3%
11 AM
25°
3%
12 PM
27°
3%
1 PM
30°
3%
2 PM
31°
3%
3 PM
31°
3%
4 PM
31°
3%
5 PM
32°
3%
6 PM
31°
3%
7 PM
29°
3%
8 PM
28°
3%
9 PM
27°
3%
10 PM
26°
3%
11 PM
26°
3%
12 AM
26°
3%
1 AM
25°
3%
2 AM
24°
3%
7-Day Forecast
Today
32° 22°
Mostly Clear.
Sun
36° 22°
Mostly Clear.
Mon
38° 24°
Partly Cloudy.
Tue
36° 24°
Overcast with a 48% chance of rain.
Wed
37° 21°
Drizzle, 51% chance.
Thu
30° 19°
Rain, 82% chance.
Fri
27° 17°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Clear 3% 6 mph SSW 91%
4 AM 19° Clear 3% 6 mph SW 91%
5 AM 18° Clear 3% 6 mph SW 92%
6 AM 18° Clear 3% 5 mph SW 94%
7 AM 19° Clear 3% 4 mph SW 90%
8 AM 22° Mostly Clear 3% 4 mph WSW 85%
9 AM 22° Mostly Clear 3% 3 mph W 79%
10 AM 23° Mostly Clear 3% 2 mph WNW 75%
11 AM 25° Clear 3% 2 mph ESE 70%
12 PM 27° Clear 3% 3 mph ESE 65%
1 PM 30° Clear 3% 4 mph ESE 62%
2 PM 31° Clear 3% 4 mph ESE 60%
3 PM 31° Mostly Clear 3% 5 mph ESE 58%
4 PM 31° Mostly Clear 3% 6 mph ESE 60%
5 PM 32° Mostly Clear 3% 6 mph ESE 64%
6 PM 31° Mostly Clear 3% 6 mph ESE 69%
7 PM 29° Mostly Clear 3% 6 mph SE 72%
8 PM 28° Mostly Clear 3% 6 mph SE 73%
9 PM 27° Mostly Clear 3% 6 mph SSE 74%
10 PM 26° Mostly Clear 3% 7 mph SSE 75%
11 PM 26° Partly Cloudy 3% 8 mph SSE 76%
12 AM 26° Partly Cloudy 3% 9 mph S 76%
1 AM 25° Partly Cloudy 3% 9 mph S 77%
2 AM 24° Mostly Clear 3% 9 mph S 78%
15-Day Forecast
Today
8/8
Mostly Clear
3%
22°
32°
Sun
8/9
Mostly Clear
3%
22°
36°
Mon
8/10
Partly Cloudy
17%
24°
38°
Tue
8/11
Overcast
48%
24°
36°
Wed
8/12
Drizzle
51%
21°
37°
Thu
8/13
Rain
82%
19°
30°
Fri
8/14
Rain
82%
17°
27°
Sat
8/15
Rain
82%
16°
27°
Sun
8/16
Drizzle
44%
16°
29°
Mon
8/17
Rain
68%
17°
31°
Tue
8/18
Drizzle
60%
21°
34°
Wed
8/19
Drizzle
60%
22°
34°
Thu
8/20
Drizzle
60%
21°
35°
Fri
8/21
Drizzle
60%
21°
34°
Sat
8/22
Clear
60%
21°
33°
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 10.3 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 36 53
Sun 47 Good 34 47
Mon 52 Moderate 36 52
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 Sat Aug 8, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE46 J/kg
MLCAPE142 J/kg
MUCAPE362 J/kg
SBCIN-727 J/kg
MLCIN0 J/kg
Lifted Index-0.9
Kinematics
0–6 km Shear37 kt
0–1 km Shear6 kt
Eff. Shear—
0–1 km SRH29
0–3 km SRH-85
Eff. SRH—
Storm Motion298° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index13.5
Thermo & Levels
PWAT1.07 in
0–3 km LR3.1 °C/km
700–500 LR7.7 °C/km
Total Totals43.8
LCL969 hPa
LFC547 hPa
EL428 hPa
Freezing Lvl14,304 ft