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

Erath County, Texas, United States

Last updated: 3:48 PM CDT  ·  Refresh
36°C
Feels like 38°
Mostly Clear
▲ 37°  /  ▼ 22°
Wind
11 mph S
Humidity
37%
Dew Point
19°
Pressure
28,55 inHg
Visibility
10 mi
UV Index
8,0
Cloud Cover
16%
Sunrise
7:14 AM
Sunset
7:41 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Erath County is currently mostly clear at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1945 J/kg) — isolated convective development possible. Sunrise: 7:14AM · Sunset: 7:41PM.

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: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
3%
4 PM
37°
3%
5 PM
37°
3%
6 PM
35°
3%
7 PM
33°
3%
8 PM
31°
3%
9 PM
30°
3%
10 PM
29°
3%
11 PM
28°
3%
12 AM
28°
3%
1 AM
27°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
22°
3%
8 AM
23°
3%
9 AM
26°
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° 22°
Clear.
Mon
39° 22°
Clear.
Tue
39° 19°
Clear.
Wed
37° 20°
Clear.
Thu
36° 22°
Clear.
Fri
36° 22°
Clear.
Sat
36° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 36° Mostly Clear 3% 11 mph S 37%
4 PM 37° Mostly Clear 3% 13 mph S 36%
5 PM 37° Clear 3% 13 mph S 36%
6 PM 35° Clear 3% 12 mph S 35%
7 PM 33° Clear 3% 11 mph SSE 41%
8 PM 31° Clear 3% 11 mph SSE 47%
9 PM 30° Clear 3% 12 mph SSE 54%
10 PM 29° Clear 3% 12 mph SSE 58%
11 PM 28° Clear 3% 13 mph S 64%
12 AM 28° Clear 3% 12 mph S 71%
1 AM 27° Clear 3% 11 mph S 75%
2 AM 26° Clear 3% 10 mph S 78%
3 AM 26° Clear 3% 10 mph S 82%
4 AM 25° Clear 3% 9 mph S 84%
5 AM 22° Mostly Clear 3% 9 mph S 86%
6 AM 22° Mostly Clear 3% 8 mph SSW 88%
7 AM 22° Mostly Clear 3% 9 mph SSW 82%
8 AM 23° Mostly Clear 3% 10 mph SSW 73%
9 AM 26° Clear 3% 11 mph SSW 66%
10 AM 29° Clear 3% 11 mph SSW 60%
11 AM 30° Clear 3% 12 mph SSW 54%
12 PM 31° Clear 3% 12 mph S 48%
1 PM 33° Clear 3% 12 mph S 46%
2 PM 34° Clear 3% 12 mph S 44%
15-Day Forecast
Today
9/13
Clear
3%
22°
37°
Mon
9/14
Clear
3%
22°
39°
Tue
9/15
Clear
3%
19°
39°
Wed
9/16
Clear
8%
20°
37°
Thu
9/17
Clear
9%
22°
36°
Fri
9/18
Clear
18%
22°
36°
Sat
9/19
Clear
19%
21°
36°
Sun
9/20
Clear
60%
22°
34°
Mon
9/21
Drizzle
60%
18°
33°
Tue
9/22
Drizzle
60%
17°
33°
Wed
9/23
Drizzle
60%
19°
33°
Thu
9/24
Drizzle
60%
21°
32°
Fri
9/25
Drizzle
60%
21°
32°
Sat
9/26
Clear
60%
20°
33°
Sun
9/27
Drizzle
60%
20°
32°
31
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
31 AQI 5.6 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 31 Good 31 31
Tue 32 Good 32 22
Wed 35 Good 35 34
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
SBCAPE2323 J/kg
MLCAPE1435 J/kg
MUCAPE2323 J/kg
SBCIN0 J/kg
MLCIN-16 J/kg
Lifted Index-4.7
Kinematics
0–6 km Shear8 kt
0–1 km Shear2 kt
Eff. Shear7 kt
0–1 km SRH0
0–3 km SRH18
Eff. SRH18
Storm Motion125° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.1
Thermo & Levels
PWAT1.60 in
0–3 km LR9.0 °C/km
700–500 LR5.5 °C/km
Total Totals49.0
LCL761 hPa
LFC967 hPa
EL150 hPa
Freezing Lvl15,719 ft