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: 5:08 PM CDT  ·  Refresh
38°C
Feels like 42°
Partly Cloudy
▲ 39°  /  ▼ 23°
Wind
3 mph SSE
Humidity
36%
Dew Point
20°
Pressure
29.58 inHg
Visibility
9 mi
UV Index
6.5
Cloud Cover
32%
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 partly cloudy at 38°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1876 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
38°
34%
6 PM
36°
37%
7 PM
33°
36%
8 PM
32°
23%
9 PM
31°
23%
10 PM
30°
13%
11 PM
29°
13%
12 AM
29°
17%
1 AM
28°
20%
2 AM
27°
20%
3 AM
27°
7%
4 AM
27°
8%
5 AM
26°
8%
6 AM
23°
5%
7 AM
23°
5%
8 AM
26°
10%
9 AM
28°
18%
10 AM
29°
19%
11 AM
30°
19%
12 PM
33°
19%
1 PM
34°
20%
2 PM
38°
20%
3 PM
38°
20%
4 PM
40°
22%
7-Day Forecast
Today
39° 23°
Partly Cloudy with a 34% chance of rain.
Sat
44° 23°
Mostly Clear with a 25% chance of rain.
Sun
42° 22°
Mostly Clear.
Mon
40° 24°
Clear.
Tue
38° 23°
Mostly Clear.
Wed
39° 23°
Drizzle, 49% chance.
Thu
37° 25°
Drizzle, 46% chance.
TimeTempConditionsPrecipWindHumidity
Now 38° Partly Cloudy 34% 3 mph SSE 36%
6 PM 36° Mostly Cloudy 37% 7 mph NNE 46%
7 PM 33° Mostly Cloudy 36% 7 mph ESE 57%
8 PM 32° Mostly Cloudy 23% 5 mph SE 60%
9 PM 31° Mostly Cloudy 23% 4 mph SSE 62%
10 PM 30° Overcast 13% 5 mph S 64%
11 PM 29° Mostly Cloudy 13% 4 mph S 64%
12 AM 29° Mostly Cloudy 17% 4 mph SSW 66%
1 AM 28° Mostly Cloudy 20% 5 mph SSW 66%
2 AM 27° Mostly Cloudy 20% 4 mph SW 68%
3 AM 27° Mostly Cloudy 7% 4 mph SSW 70%
4 AM 27° Partly Cloudy 8% 4 mph SW 72%
5 AM 26° Partly Cloudy 8% 4 mph WSW 75%
6 AM 23° Partly Cloudy 5% 4 mph WSW 78%
7 AM 23° Mostly Clear 5% 4 mph WSW 79%
8 AM 26° Mostly Clear 10% 5 mph WSW 70%
9 AM 28° Mostly Clear 18% 5 mph W 60%
10 AM 29° Mostly Clear 19% 5 mph W 52%
11 AM 30° Mostly Clear 19% 5 mph W 48%
12 PM 33° Mostly Clear 19% 4 mph W 44%
1 PM 34° Mostly Clear 20% 4 mph W 41%
2 PM 38° Mostly Clear 20% 4 mph WSW 39%
3 PM 38° Mostly Clear 20% 4 mph SW 38%
4 PM 40° Mostly Clear 22% 5 mph SSW 37%
15-Day Forecast
Today
8/21
Partly Cloudy
34%
23°
39°
Sat
8/22
Mostly Clear
25%
23°
44°
Sun
8/23
Mostly Clear
10%
22°
42°
Mon
8/24
Clear
14%
24°
40°
Tue
8/25
Mostly Clear
7%
23°
38°
Wed
8/26
Drizzle
49%
23°
39°
Thu
8/27
Drizzle
46%
25°
37°
Fri
8/28
Drizzle
46%
22°
39°
Sat
8/29
Drizzle
47%
24°
38°
Sun
8/30
Clear
35%
23°
40°
Mon
8/31
Clear
25%
24°
39°
Tue
9/1
Drizzle
60%
24°
39°
Wed
9/2
Drizzle
60%
24°
38°
Thu
9/3
Clear
25%
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
Sat 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, 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
SBCAPE2600 J/kg
MLCAPE2162 J/kg
MUCAPE2600 J/kg
SBCIN-0 J/kg
MLCIN-11 J/kg
Lifted Index-5.7
Kinematics
0–6 km Shear14 kt
0–1 km Shear5 kt
Eff. Shear11 kt
0–1 km SRH22
0–3 km SRH32
Eff. SRH32
Storm Motion69° @ 17 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index41.5
Thermo & Levels
PWAT2.01 in
0–3 km LR9.0 °C/km
700–500 LR6.2 °C/km
Total Totals52.1
LCL771 hPa
LFC767 hPa
EL158 hPa
Freezing Lvl14,911 ft