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: 7:13 PM CDT  ·  Refresh
32°C
Feels like 39°
Mostly Cloudy
▲ 39°  /  ▼ 24°
Wind
7 mph SE
Humidity
66%
Dew Point
22°
Pressure
29.64 inHg
Visibility
10 mi
UV Index
1.6
Cloud Cover
71%
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 mostly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2161 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
32°
46%
8 PM
32°
49%
9 PM
31°
49%
10 PM
28°
36%
11 PM
28°
23%
12 AM
27°
31%
1 AM
27°
18%
2 AM
26°
7%
3 AM
26°
7%
4 AM
26°
7%
5 AM
26°
4%
6 AM
24°
4%
7 AM
24°
9%
8 AM
27°
17%
9 AM
29°
18%
10 AM
32°
23%
11 AM
33°
23%
12 PM
35°
24%
1 PM
36°
27%
2 PM
41°
27%
3 PM
41°
30%
4 PM
41°
31%
5 PM
41°
22%
6 PM
39°
25%
7-Day Forecast
Tonight
39° 24°
Mostly Cloudy with a 46% chance of rain.
Sat
43° 24°
Mostly Clear with a 27% chance of rain.
Sun
42° 23°
Mostly Clear.
Mon
40° 24°
Clear with a 32% chance of rain.
Tue
40° 24°
Clear.
Wed
40° 24°
Drizzle, 48% chance.
Thu
38° 24°
Partly Cloudy with a 40% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Cloudy 46% 7 mph SE 66%
8 PM 32° Overcast 49% 4 mph ESE 73%
9 PM 31° Overcast 49% 4 mph SE 79%
10 PM 28° Overcast 36% 5 mph SE 82%
11 PM 28° Mostly Cloudy 23% 4 mph SSE 83%
12 AM 27° Mostly Cloudy 31% 4 mph S 83%
1 AM 27° Mostly Cloudy 18% 4 mph SSW 82%
2 AM 26° Mostly Cloudy 7% 4 mph SSW 83%
3 AM 26° Mostly Cloudy 7% 4 mph SW 83%
4 AM 26° Mostly Cloudy 7% 4 mph SW 84%
5 AM 26° Mostly Cloudy 4% 4 mph WSW 85%
6 AM 24° Partly Cloudy 4% 3 mph WSW 85%
7 AM 24° Partly Cloudy 9% 4 mph WSW 84%
8 AM 27° Partly Cloudy 17% 5 mph W 74%
9 AM 29° Partly Cloudy 18% 6 mph W 63%
10 AM 32° Mostly Clear 23% 6 mph W 53%
11 AM 33° Mostly Clear 23% 5 mph WNW 47%
12 PM 35° Mostly Clear 24% 4 mph WNW 41%
1 PM 36° Mostly Clear 27% 4 mph NW 35%
2 PM 41° Mostly Clear 27% 2 mph WNW 32%
3 PM 41° Mostly Clear 30% 3 mph SW 30%
4 PM 41° Clear 31% 3 mph SSW 30%
5 PM 41° Clear 22% 3 mph SSW 32%
6 PM 39° Clear 25% 3 mph S 34%
15-Day Forecast
Today
8/21
Mostly Cloudy
46%
24°
39°
Sat
8/22
Mostly Clear
27%
24°
43°
Sun
8/23
Mostly Clear
12%
23°
42°
Mon
8/24
Clear
32%
24°
40°
Tue
8/25
Clear
15%
24°
40°
Wed
8/26
Drizzle
48%
24°
40°
Thu
8/27
Partly Cloudy
40%
24°
38°
Fri
8/28
Drizzle
49%
23°
41°
Sat
8/29
Drizzle
47%
23°
41°
Sun
8/30
Clear
31%
23°
40°
Mon
8/31
Clear
25%
23°
39°
Tue
9/1
Drizzle
60%
23°
39°
Wed
9/2
Drizzle
60%
23°
38°
Thu
9/3
Clear
25%
23°
39°
Fri
9/4
Drizzle
60%
22°
38°
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
Today 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, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2587 J/kg
MLCAPE2921 J/kg
MUCAPE4441 J/kg
SBCIN-261 J/kg
MLCIN-113 J/kg
Lifted Index-6.2
Kinematics
0–6 km Shear13 kt
0–1 km Shear6 kt
Eff. Shear11 kt
0–1 km SRH23
0–3 km SRH47
Eff. SRH38
Storm Motion63° @ 16 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index42.0
Thermo & Levels
PWAT2.28 in
0–3 km LR6.8 °C/km
700–500 LR6.3 °C/km
Total Totals53.6
LCL876 hPa
LFC767 hPa
EL161 hPa
Freezing Lvl15,420 ft