Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Extreme Heat Warning — Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 9:00 PM Heat Advisory — Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 8:00 PM

San Augustine County, Texas, United States

Last updated: 5:09 PM CDT  ·  Refresh
37°C
Feels like 42°
Partly Cloudy
▲ 38°  /  ▼ 24°
Wind
2 mph NW
Humidity
40%
Dew Point
21°
Pressure
29.65 inHg
Visibility
10 mi
UV Index
6.4
Cloud Cover
32%
Sunrise
6:46 AM
Sunset
7:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Augustine County is currently partly cloudy at 37°C. Precipitation is likely — peak probability 50% around 7 PM. Atmospheric instability is elevated (CAPE up to 1929 J/kg) — isolated convective development possible. Sunrise: 6:46AM · Sunset: 7:53PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Extreme Heat Warning
Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 9:00 PM
Heat Advisory
Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 8:00 PM
48 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
44%
6 PM
36°
48%
7 PM
32°
50%
8 PM
32°
49%
9 PM
31°
32%
10 PM
29°
15%
11 PM
29°
13%
12 AM
28°
9%
1 AM
28°
7%
2 AM
27°
7%
3 AM
26°
7%
4 AM
26°
8%
5 AM
26°
5%
6 AM
24°
5%
7 AM
24°
10%
8 AM
26°
18%
9 AM
28°
18%
10 AM
30°
24%
11 AM
32°
24%
12 PM
35°
25%
1 PM
36°
25%
2 PM
38°
25%
3 PM
38°
28%
4 PM
40°
31%
7-Day Forecast
Today
38° 24°
Partly Cloudy with a 49% chance of rain.
Sat
43° 24°
Mostly Clear with a 25% chance of rain.
Sun
42° 23°
Clear.
Mon
41° 25°
Clear with a 29% chance of rain.
Tue
38° 23°
Clear.
Wed
39° 23°
Drizzle, 48% chance.
Thu
38° 24°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 37° Partly Cloudy 44% 2 mph NW 40%
6 PM 36° Partly Cloudy 48% 5 mph SSE 50%
7 PM 32° Rain 50% 7 mph E 59%
8 PM 32° Mostly Cloudy 49% 5 mph SSE 62%
9 PM 31° Mostly Cloudy 32% 4 mph SE 65%
10 PM 29° Mostly Cloudy 15% 5 mph SE 66%
11 PM 29° Overcast 13% 4 mph S 66%
12 AM 28° Overcast 9% 4 mph SSW 68%
1 AM 28° Overcast 7% 4 mph SW 71%
2 AM 27° Mostly Cloudy 7% 3 mph SW 75%
3 AM 26° Mostly Cloudy 7% 3 mph WSW 78%
4 AM 26° Mostly Cloudy 8% 4 mph WSW 80%
5 AM 26° Mostly Cloudy 5% 4 mph WSW 81%
6 AM 24° Partly Cloudy 5% 3 mph WSW 82%
7 AM 24° Partly Cloudy 10% 3 mph WSW 82%
8 AM 26° Partly Cloudy 18% 4 mph WSW 72%
9 AM 28° Mostly Clear 18% 5 mph W 62%
10 AM 30° Mostly Clear 24% 5 mph W 54%
11 AM 32° Mostly Clear 24% 4 mph W 50%
12 PM 35° Mostly Clear 25% 4 mph W 45%
1 PM 36° Mostly Clear 25% 4 mph WNW 41%
2 PM 38° Mostly Clear 25% 4 mph W 40%
3 PM 38° Clear 28% 3 mph WSW 38%
4 PM 40° Clear 31% 4 mph SSW 38%
15-Day Forecast
Today
8/21
Partly Cloudy
49%
24°
38°
Sat
8/22
Mostly Clear
25%
24°
43°
Sun
8/23
Clear
18%
23°
42°
Mon
8/24
Clear
29%
25°
41°
Tue
8/25
Clear
7%
23°
38°
Wed
8/26
Drizzle
48%
23°
39°
Thu
8/27
Drizzle
53%
24°
38°
Fri
8/28
Mostly Clear
49%
23°
39°
Sat
8/29
Drizzle
47%
23°
39°
Sun
8/30
Clear
35%
23°
41°
Mon
8/31
Clear
25%
23°
40°
Tue
9/1
Drizzle
60%
23°
39°
Wed
9/2
Drizzle
60%
23°
39°
Thu
9/3
Clear
25%
23°
39°
Fri
9/4
Clear
60%
22°
39°
48
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
48 AQI 8.7 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 48 Good 34 48
Sun 55 Moderate 38 55
Mon 58 Moderate 35 58
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 Aug 21, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2818 J/kg
MLCAPE2445 J/kg
MUCAPE2818 J/kg
SBCIN-2 J/kg
MLCIN-11 J/kg
Lifted Index-6.1
Kinematics
0–6 km Shear13 kt
0–1 km Shear4 kt
Eff. Shear9 kt
0–1 km SRH18
0–3 km SRH36
Eff. SRH36
Storm Motion64° @ 17 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index40.1
Thermo & Levels
PWAT2.08 in
0–3 km LR8.6 °C/km
700–500 LR6.3 °C/km
Total Totals51.9
LCL790 hPa
LFC781 hPa
EL154 hPa
Freezing Lvl14,826 ft