Heat Advisory — Grayson, TX, Fannin, TX, Lamar, TX, Denton, TX, Collin, TX, Hunt, TX, Delta, TX, Hopkins, TX, Tarrant, TX, Dallas, TX, Rockwall, TX, Kaufman, TX, Van Zandt, TX, Rains, TX, Johnson, TX, Ellis, TX, Henderson, TX, Hill, TX, Navarro, TX, Freestone, TX, Anderson, TX, Bell, TX, McLennan, TX, Falls, TX, Limestone, TX, Leon, TX, Milam, TX, Robertson, TX 8:00 PM

Van Zandt County, Texas, United States

Last updated: 3:51 PM CDT  ·  Refresh
37°C
Feels like 38°
Mostly Clear
▲ 38°  /  ▼ 22°
Wind
9 mph S
Humidity
31%
Dew Point
19°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
7.8
Cloud Cover
11%
Sunrise
7:05 AM
Sunset
7:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Van Zandt County is currently mostly clear at 37°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1684 J/kg) — isolated convective development possible. Sunrise: 7:05AM · Sunset: 7:31PM.

Alerts

Heat Advisory
Grayson, TX, Fannin, TX, Lamar, TX, Denton, TX, Collin, TX, Hunt, TX, Delta, TX, Hopkins, TX, Tarrant, TX, Dallas, TX, Rockwall, TX, Kaufman, TX, Van Zandt, TX, Rains, TX, Johnson, TX, Ellis, TX, Henderson, TX, Hill, TX, Navarro, TX, Freestone, TX, Anderson, TX, Bell, TX, McLennan, TX, Falls, TX, Limestone, TX, Leon, TX, Milam, TX, Robertson, TX
Expires 8:00 PM
36 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
3%
4 PM
37°
3%
5 PM
37°
3%
6 PM
35°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
31°
3%
10 PM
30°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
28°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
23°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
27°
3%
10 AM
30°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
33°
3%
2 PM
34°
3%
7-Day Forecast
Today
38° 22°
Clear.
Mon
38° 22°
Clear.
Tue
38° 21°
Mostly Clear.
Wed
37° 21°
Clear.
Thu
36° 22°
Clear.
Fri
37° 22°
Clear.
Sat
37° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Mostly Clear 3% 9 mph S 31%
4 PM 37° Clear 3% 10 mph S 31%
5 PM 37° Clear 3% 10 mph S 33%
6 PM 35° Clear 3% 10 mph SSE 35%
7 PM 33° Clear 3% 9 mph SSE 41%
8 PM 32° Clear 3% 9 mph SSE 48%
9 PM 31° Clear 3% 10 mph S 55%
10 PM 30° Clear 3% 9 mph S 60%
11 PM 29° Clear 3% 9 mph S 67%
12 AM 28° Clear 3% 9 mph S 73%
1 AM 28° Clear 3% 8 mph S 76%
2 AM 27° Clear 3% 7 mph S 78%
3 AM 26° Clear 3% 7 mph SSW 81%
4 AM 26° Clear 3% 7 mph SSW 83%
5 AM 23° Clear 3% 7 mph SSW 85%
6 AM 22° Clear 3% 6 mph SSW 88%
7 AM 23° Clear 3% 7 mph SSW 83%
8 AM 25° Clear 3% 8 mph SSW 74%
9 AM 27° Clear 3% 9 mph SSW 68%
10 AM 30° Clear 3% 9 mph SSW 63%
11 AM 31° Clear 3% 9 mph SSW 58%
12 PM 32° Clear 3% 9 mph SSW 53%
1 PM 33° Clear 3% 9 mph SSW 51%
2 PM 34° Clear 3% 10 mph S 49%
15-Day Forecast
Today
9/13
Clear
3%
22°
38°
Mon
9/14
Clear
3%
22°
38°
Tue
9/15
Mostly Clear
7%
21°
38°
Wed
9/16
Clear
8%
21°
37°
Thu
9/17
Clear
9%
22°
36°
Fri
9/18
Clear
9%
22°
37°
Sat
9/19
Clear
19%
22°
37°
Sun
9/20
Clear
60%
22°
34°
Mon
9/21
Drizzle
60%
19°
33°
Tue
9/22
Drizzle
60%
16°
33°
Wed
9/23
Drizzle
60%
17°
32°
Thu
9/24
Drizzle
60%
20°
32°
Fri
9/25
Clear
25%
20°
32°
Sat
9/26
Clear
25%
19°
32°
Sun
9/27
Drizzle
60%
19°
32°
36
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
36 AQI 6.5 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 36 Good 32 36
Tue 32 Good 32 29
Wed 32 Good 31 32
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 Sun Sep 13, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1703 J/kg
MLCAPE379 J/kg
MUCAPE1703 J/kg
SBCIN0 J/kg
MLCIN-54 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear10 kt
0–1 km Shear1 kt
Eff. Shear14 kt
0–1 km SRH-1
0–3 km SRH15
Eff. SRH15
Storm Motion120° @ 15 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.9
Thermo & Levels
PWAT1.66 in
0–3 km LR8.7 °C/km
700–500 LR6.0 °C/km
Total Totals44.9
LCL770 hPa
LFC995 hPa
EL156 hPa
Freezing Lvl16,178 ft