Fire Weather Watch 8:00 PM

Simpson County, Mississippi, United States

Last updated: 4:17 AM CDT  ·  Refresh
17°C
Feels like 18°
Clear
▲ 34°  /  ▼ 16°
Wind
3 mph S
Humidity
83%
Dew Point
14°
Pressure
29.71 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
7:02 AM
Sunset
6:27 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently clear at 17°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:02AM · Sunset: 6:27PM.

Alerts

Fire Weather Watch
Expires 8:00 PM
54 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
17°
3%
5 AM
15°
3%
6 AM
14°
3%
7 AM
15°
3%
8 AM
18°
3%
9 AM
22°
3%
10 AM
26°
3%
11 AM
28°
3%
12 PM
29°
3%
1 PM
33°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
33°
3%
5 PM
31°
3%
6 PM
28°
3%
7 PM
27°
3%
8 PM
26°
3%
9 PM
22°
3%
10 PM
21°
3%
11 PM
19°
3%
12 AM
19°
3%
1 AM
19°
3%
2 AM
19°
3%
3 AM
18°
3%
7-Day Forecast
Today
34° 16°
Clear.
Fri
31° 11°
Partly Cloudy.
Sat
23° 6°
Clear.
Sun
24° 5°
Clear.
Mon
27° 7°
Clear.
Tue
29° 11°
Clear.
Wed
30° 11°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 17° Clear 3% 3 mph S 83%
5 AM 15° Clear 3% 3 mph S 83%
6 AM 14° Clear 3% 3 mph S 85%
7 AM 15° Clear 3% 3 mph SSE 85%
8 AM 18° Clear 3% 2 mph SSE 77%
9 AM 22° Clear 3% 2 mph S 63%
10 AM 26° Clear 3% 3 mph S 52%
11 AM 28° Clear 3% 4 mph S 46%
12 PM 29° Clear 3% 5 mph S 40%
1 PM 33° Clear 3% 5 mph S 36%
2 PM 34° Clear 3% 5 mph S 35%
3 PM 34° Clear 3% 5 mph SSE 34%
4 PM 33° Clear 3% 5 mph SSE 35%
5 PM 31° Clear 3% 5 mph SSE 39%
6 PM 28° Clear 3% 4 mph SSE 44%
7 PM 27° Clear 3% 4 mph S 49%
8 PM 26° Clear 3% 5 mph S 54%
9 PM 22° Clear 3% 5 mph S 59%
10 PM 21° Clear 3% 6 mph S 64%
11 PM 19° Clear 3% 5 mph S 70%
12 AM 19° Clear 3% 5 mph SSW 75%
1 AM 19° Clear 3% 4 mph SSW 78%
2 AM 19° Clear 3% 4 mph SSW 81%
3 AM 18° Mostly Clear 3% 4 mph SSW 83%
15-Day Forecast
Today
10/15
Clear
3%
16°
34°
Fri
10/16
Partly Cloudy
3%
11°
31°
Sat
10/17
Clear
3%
6°
23°
Sun
10/18
Clear
3%
5°
24°
Mon
10/19
Clear
8%
7°
27°
Tue
10/20
Clear
8%
11°
29°
Wed
10/21
Clear
3%
11°
30°
Thu
10/22
Clear
3%
9°
31°
Fri
10/23
Clear
19%
8°
31°
Sat
10/24
Drizzle
51%
12°
31°
Sun
10/25
Drizzle
60%
14°
29°
Mon
10/26
Drizzle
60%
12°
27°
Tue
10/27
Clear
60%
12°
26°
Wed
10/28
Clear
60%
12°
27°
Thu
10/29
Drizzle
60%
12°
28°
54
Moderate
U.S. Air Quality Index · Dominant: O3
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
50 AQI 9.0 µg/m³
O3
Ground-level ozone
Dominant
54 AQI 57 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 54 Moderate 54 50
Fri 56 Moderate 46 56
Sat 48 Good 40 48
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Thu Oct 15, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE17 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index11.6
Kinematics
0–6 km Shear15 kt
0–1 km Shear9 kt
Eff. Shear—
0–1 km SRH-45
0–3 km SRH28
Eff. SRH—
Storm Motion142° @ 19 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index7.9
Thermo & Levels
PWAT0.93 in
0–3 km LR1.9 °C/km
700–500 LR6.0 °C/km
Total Totals30.2
LCL962 hPa
LFC—
EL—
Freezing Lvl15,620 ft