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

Nacogdoches County, Texas, United States

Last updated: 7:12 PM CDT  ·  Refresh
34°C
Feels like 40°
Mostly Cloudy
▲ 39°  /  ▼ 23°
Wind
7 mph SE
Humidity
50%
Dew Point
22°
Pressure
29.55 inHg
Visibility
10 mi
UV Index
1.6
Cloud Cover
75%
Sunrise
6:47 AM
Sunset
7:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Nacogdoches County is currently mostly cloudy at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2428 J/kg) — isolated convective development possible. Sunrise: 6:47AM · Sunset: 7:55PM.

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
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
19%
8 PM
33°
30%
9 PM
32°
30%
10 PM
29°
20%
11 PM
29°
23%
12 AM
28°
20%
1 AM
28°
7%
2 AM
27°
7%
3 AM
27°
7%
4 AM
27°
7%
5 AM
26°
7%
6 AM
23°
4%
7 AM
24°
5%
8 AM
26°
10%
9 AM
28°
18%
10 AM
31°
27%
11 AM
32°
27%
12 PM
33°
27%
1 PM
35°
21%
2 PM
41°
21%
3 PM
42°
22%
4 PM
42°
22%
5 PM
41°
22%
6 PM
40°
13%
7-Day Forecast
Tonight
39° 23°
Mostly Cloudy with a 20% chance of rain.
Sat
44° 23°
Partly Cloudy with a 27% chance of rain.
Sun
42° 22°
Mostly Clear.
Mon
41° 24°
Clear.
Tue
40° 24°
Mostly Clear.
Wed
39° 24°
Drizzle, 48% chance.
Thu
39° 24°
Drizzle, 59% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Cloudy 19% 7 mph SE 50%
8 PM 33° Mostly Cloudy 30% 5 mph SSE 58%
9 PM 32° Mostly Cloudy 30% 4 mph SSE 65%
10 PM 29° Mostly Cloudy 20% 4 mph S 70%
11 PM 29° Mostly Cloudy 23% 4 mph SSE 72%
12 AM 28° Mostly Cloudy 20% 4 mph S 73%
1 AM 28° Mostly Cloudy 7% 4 mph SSW 75%
2 AM 27° Mostly Cloudy 7% 4 mph SSW 75%
3 AM 27° Mostly Cloudy 7% 4 mph SW 76%
4 AM 27° Mostly Cloudy 7% 4 mph SW 77%
5 AM 26° Partly Cloudy 7% 4 mph SW 79%
6 AM 23° Partly Cloudy 4% 4 mph WSW 81%
7 AM 24° Partly Cloudy 5% 4 mph WSW 80%
8 AM 26° Mostly Clear 10% 5 mph WSW 70%
9 AM 28° Mostly Clear 18% 6 mph W 59%
10 AM 31° Partly Cloudy 27% 6 mph W 49%
11 AM 32° Partly Cloudy 27% 5 mph W 44%
12 PM 33° Partly Cloudy 27% 4 mph WNW 38%
1 PM 35° Partly Cloudy 21% 3 mph WNW 34%
2 PM 41° Partly Cloudy 21% 3 mph W 31%
3 PM 42° Partly Cloudy 22% 3 mph SW 28%
4 PM 42° Partly Cloudy 22% 4 mph SSW 27%
5 PM 41° Partly Cloudy 22% 4 mph S 29%
6 PM 40° Mostly Clear 13% 4 mph SSE 31%
15-Day Forecast
Today
8/21
Mostly Cloudy
20%
23°
39°
Sat
8/22
Partly Cloudy
27%
23°
44°
Sun
8/23
Mostly Clear
12%
22°
42°
Mon
8/24
Clear
14%
24°
41°
Tue
8/25
Mostly Clear
19%
24°
40°
Wed
8/26
Drizzle
48%
24°
39°
Thu
8/27
Drizzle
59%
24°
39°
Fri
8/28
Drizzle
46%
24°
40°
Sat
8/29
Drizzle
47%
23°
40°
Sun
8/30
Clear
31%
23°
40°
Mon
8/31
Clear
25%
23°
39°
Tue
9/1
Drizzle
60%
24°
39°
Wed
9/2
Drizzle
60%
24°
38°
Thu
9/3
Drizzle
60%
24°
39°
Fri
9/4
Clear
25%
23°
38°
51
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
51 AQI 9.2 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 37 51
Sun 55 Moderate 40 55
Mon 57 Moderate 35 57
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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2908 J/kg
MLCAPE2492 J/kg
MUCAPE2908 J/kg
SBCIN-143 J/kg
MLCIN-68 J/kg
Lifted Index-6.0
Kinematics
0–6 km Shear17 kt
0–1 km Shear8 kt
Eff. Shear15 kt
0–1 km SRH34
0–3 km SRH43
Eff. SRH43
Storm Motion54° @ 18 kt
0–1 km EHI0.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.3
Thermo & Levels
PWAT1.99 in
0–3 km LR7.8 °C/km
700–500 LR6.2 °C/km
Total Totals51.2
LCL828 hPa
LFC761 hPa
EL156 hPa
Freezing Lvl15,325 ft