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

Anderson County, Texas, United States

Last updated: 3:47 PM CDT  ·  Refresh
36°C
Feels like 38°
Clear
▲ 37°  /  ▼ 23°
Wind
8 mph S
Humidity
40%
Dew Point
21°
Pressure
29,47 inHg
Visibility
10 mi
UV Index
7,9
Cloud Cover
2%
Sunrise
7:04 AM
Sunset
7:30 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Anderson County is currently clear at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2432 J/kg) — isolated convective development possible. Sunrise: 7:04AM · Sunset: 7:30PM.

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
31 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
3%
4 PM
37°
3%
5 PM
36°
3%
6 PM
35°
3%
7 PM
33°
3%
8 PM
31°
3%
9 PM
29°
3%
10 PM
29°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
27°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
8 AM
24°
3%
9 AM
27°
3%
10 AM
29°
3%
11 AM
30°
3%
12 PM
31°
3%
1 PM
33°
3%
2 PM
34°
3%
7-Day Forecast
Today
37° 23°
Clear.
Mon
38° 23°
Mostly Clear.
Tue
37° 21°
Mostly Cloudy.
Wed
36° 21°
Clear.
Thu
36° 22°
Clear.
Fri
37° 22°
Clear.
Sat
38° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 36° Clear 3% 8 mph S 40%
4 PM 37° Clear 3% 8 mph SSE 39%
5 PM 36° Clear 3% 8 mph SSE 42%
6 PM 35° Clear 3% 8 mph SSE 46%
7 PM 33° Clear 3% 7 mph SSE 52%
8 PM 31° Clear 3% 7 mph SSE 59%
9 PM 29° Clear 3% 8 mph S 66%
10 PM 29° Clear 3% 8 mph S 70%
11 PM 28° Mostly Clear 3% 8 mph S 73%
12 AM 27° Mostly Clear 3% 7 mph S 76%
1 AM 27° Mostly Clear 3% 6 mph S 80%
2 AM 26° Mostly Clear 3% 6 mph S 84%
3 AM 26° Clear 3% 5 mph S 87%
4 AM 25° Mostly Clear 3% 5 mph S 89%
5 AM 23° Mostly Clear 3% 5 mph S 91%
6 AM 23° Partly Cloudy 3% 4 mph S 92%
7 AM 23° Partly Cloudy 3% 5 mph S 89%
8 AM 24° Partly Cloudy 3% 6 mph SSW 84%
9 AM 27° Partly Cloudy 3% 6 mph SSW 80%
10 AM 29° Mostly Clear 3% 6 mph SSW 73%
11 AM 30° Mostly Clear 3% 6 mph SSW 66%
12 PM 31° Clear 3% 6 mph S 59%
1 PM 33° Clear 3% 7 mph S 57%
2 PM 34° Mostly Clear 3% 8 mph S 56%
15-Day Forecast
Today
9/13
Clear
3%
23°
37°
Mon
9/14
Mostly Clear
13%
23°
38°
Tue
9/15
Mostly Cloudy
3%
21°
37°
Wed
9/16
Clear
3%
21°
36°
Thu
9/17
Clear
9%
22°
36°
Fri
9/18
Clear
9%
22°
37°
Sat
9/19
Clear
19%
21°
38°
Sun
9/20
Clear
60%
22°
36°
Mon
9/21
Drizzle
60%
20°
34°
Tue
9/22
Drizzle
60%
17°
33°
Wed
9/23
Drizzle
60%
18°
33°
Thu
9/24
Drizzle
60%
20°
33°
Fri
9/25
Clear
25%
19°
32°
Sat
9/26
Clear
25%
19°
33°
Sun
9/27
Drizzle
60%
19°
33°
31
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
31 AQI 5.6 µg/m³
O3
Ground-level ozone
24 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 31 Good 24 31
Tue 29 Good 29 27
Wed 28 Good 28 28
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 dim. sept. 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
SBCAPE1971 J/kg
MLCAPE1031 J/kg
MUCAPE1971 J/kg
SBCIN-1 J/kg
MLCIN-43 J/kg
Lifted Index-3.7
Kinematics
0–6 km Shear8 kt
0–1 km Shear1 kt
Eff. Shear11 kt
0–1 km SRH-2
0–3 km SRH19
Eff. SRH19
Storm Motion106° @ 15 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.7
Thermo & Levels
PWAT1.65 in
0–3 km LR8.2 °C/km
700–500 LR5.5 °C/km
Total Totals43.5
LCL804 hPa
LFC773 hPa
EL159 hPa
Freezing Lvl16,378 ft