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: 4:54 PM CDT  ·  Refresh
35°C
Feels like 37°
Clear
▲ 36°  /  ▼ 23°
Wind
8 mph S
Humidity
39%
Dew Point
20°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
6.5
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 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2182 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
35°
6%
5 PM
36°
7%
6 PM
34°
7%
7 PM
33°
7%
8 PM
32°
7%
9 PM
29°
4%
10 PM
29°
4%
11 PM
28°
4%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
24°
3%
8 AM
25°
3%
9 AM
27°
3%
10 AM
28°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
34°
3%
2 PM
34°
3%
3 PM
34°
9%
7-Day Forecast
Today
36° 23°
Clear.
Mon
38° 23°
Mostly Clear.
Tue
38° 22°
Mostly Clear.
Wed
36° 22°
Mostly Clear.
Thu
36° 23°
Partly Cloudy.
Fri
36° 22°
Clear.
Sat
36° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Clear 6% 8 mph S 39%
5 PM 36° Clear 7% 8 mph SSE 41%
6 PM 34° Clear 7% 8 mph SSE 46%
7 PM 33° Clear 7% 6 mph SSE 52%
8 PM 32° Clear 7% 7 mph SSE 58%
9 PM 29° Clear 4% 8 mph S 65%
10 PM 29° Clear 4% 8 mph S 69%
11 PM 28° Mostly Clear 4% 8 mph S 72%
12 AM 27° Mostly Clear 3% 7 mph S 76%
1 AM 26° Mostly Clear 3% 6 mph S 80%
2 AM 26° Clear 3% 6 mph S 84%
3 AM 26° Clear 3% 6 mph S 88%
4 AM 25° Clear 3% 5 mph S 90%
5 AM 23° Mostly Clear 3% 5 mph S 91%
6 AM 23° Mostly Clear 3% 5 mph S 92%
7 AM 24° Mostly Clear 3% 5 mph SSW 89%
8 AM 25° Mostly Clear 3% 6 mph SSW 84%
9 AM 27° Partly Cloudy 3% 6 mph SSW 81%
10 AM 28° Mostly Clear 3% 6 mph SSW 74%
11 AM 31° Mostly Clear 3% 6 mph SSW 67%
12 PM 32° Clear 3% 7 mph S 59%
1 PM 34° Clear 3% 7 mph S 57%
2 PM 34° Clear 3% 8 mph S 56%
3 PM 34° Clear 9% 9 mph S 55%
15-Day Forecast
Today
9/13
Clear
7%
23°
36°
Mon
9/14
Mostly Clear
10%
23°
38°
Tue
9/15
Mostly Clear
6%
22°
38°
Wed
9/16
Mostly Clear
8%
22°
36°
Thu
9/17
Partly Cloudy
8%
23°
36°
Fri
9/18
Clear
17%
22°
36°
Sat
9/19
Clear
17%
21°
36°
Sun
9/20
Mostly Clear
49%
22°
36°
Mon
9/21
Drizzle
60%
21°
34°
Tue
9/22
Drizzle
67%
19°
33°
Wed
9/23
Drizzle
60%
20°
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 Sun Sep 13, 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
SBCAPE1668 J/kg
MLCAPE1012 J/kg
MUCAPE2612 J/kg
SBCIN-22 J/kg
MLCIN-128 J/kg
Lifted Index-3.7
Kinematics
0–6 km Shear11 kt
0–1 km Shear5 kt
Eff. Shear12 kt
0–1 km SRH-16
0–3 km SRH22
Eff. SRH22
Storm Motion117° @ 19 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.3
Thermo & Levels
PWAT1.60 in
0–3 km LR8.1 °C/km
700–500 LR5.6 °C/km
Total Totals45.1
LCL806 hPa
LFC746 hPa
EL167 hPa
Freezing Lvl16,601 ft