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

Coryell County, Texas, United States

Last updated: 3:49 PM CDT  ·  Refresh
96°F
Feels like 99°
Clear
▲ 99°  /  ▼ 74°
Wind
11 mph SSE
Humidity
36%
Dew Point
67°
Pressure
28.90 inHg
Visibility
10 mi
UV Index
8.0
Cloud Cover
5%
Sunrise
7:13 AM
Sunset
7:39 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Coryell County is currently clear at 96°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2248 J/kg) — isolated convective development possible. Sunrise: 7:13AM · Sunset: 7:39PM.

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
34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
96°
3%
4 PM
99°
5%
5 PM
97°
5%
6 PM
95°
5%
7 PM
92°
5%
8 PM
88°
5%
9 PM
86°
5%
10 PM
84°
3%
11 PM
83°
3%
12 AM
82°
3%
1 AM
81°
3%
2 AM
80°
3%
3 AM
80°
3%
4 AM
79°
3%
5 AM
74°
3%
6 AM
74°
3%
7 AM
75°
3%
8 AM
77°
9%
9 AM
80°
9%
10 AM
85°
9%
11 AM
86°
10%
12 PM
88°
10%
1 PM
91°
10%
2 PM
92°
10%
7-Day Forecast
Today
99° 74°
Clear.
Mon
100° 74°
Clear.
Tue
100° 70°
Partly Cloudy.
Wed
96° 73°
Mostly Clear with a 22% chance of rain.
Thu
96° 74°
Clear.
Fri
97° 73°
Clear.
Sat
96° 72°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 96° Clear 3% 11 mph SSE 36%
4 PM 99° Clear 5% 12 mph SSE 36%
5 PM 97° Clear 5% 13 mph SSE 37%
6 PM 95° Mostly Clear 5% 12 mph SE 40%
7 PM 92° Mostly Clear 5% 11 mph SSE 47%
8 PM 88° Mostly Clear 5% 12 mph SSE 54%
9 PM 86° Mostly Clear 5% 14 mph SSE 66%
10 PM 84° Mostly Clear 3% 14 mph S 70%
11 PM 83° Mostly Clear 3% 12 mph S 72%
12 AM 82° Mostly Clear 3% 12 mph S 75%
1 AM 81° Mostly Clear 3% 11 mph S 78%
2 AM 80° Mostly Clear 3% 11 mph S 80%
3 AM 80° Mostly Clear 3% 10 mph SSW 82%
4 AM 79° Mostly Clear 3% 9 mph SSW 84%
5 AM 74° Mostly Clear 3% 9 mph SSW 86%
6 AM 74° Mostly Clear 3% 8 mph S 88%
7 AM 75° Mostly Clear 3% 8 mph S 83%
8 AM 77° Clear 9% 10 mph SSW 76%
9 AM 80° Clear 9% 11 mph SSW 71%
10 AM 85° Clear 9% 11 mph SSW 65%
11 AM 86° Clear 10% 11 mph S 59%
12 PM 88° Clear 10% 11 mph S 53%
1 PM 91° Clear 10% 12 mph S 50%
2 PM 92° Clear 10% 12 mph S 48%
15-Day Forecast
Today
9/13
Clear
5%
74°
99°
Mon
9/14
Clear
11%
74°
100°
Tue
9/15
Partly Cloudy
8%
70°
100°
Wed
9/16
Mostly Clear
22%
73°
96°
Thu
9/17
Clear
18%
74°
96°
Fri
9/18
Clear
3%
73°
97°
Sat
9/19
Clear
19%
72°
96°
Sun
9/20
Clear
60%
73°
95°
Mon
9/21
Drizzle
60%
72°
93°
Tue
9/22
Drizzle
60%
66°
92°
Wed
9/23
Drizzle
60%
70°
91°
Thu
9/24
Drizzle
60%
70°
90°
Fri
9/25
Drizzle
60%
70°
89°
Sat
9/26
Clear
60%
69°
90°
Sun
9/27
Drizzle
60%
69°
89°
34
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
34 AQI 6.2 µg/m³
O3
Ground-level ozone
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 34 Good 33 34
Tue 35 Good 35 24
Wed 40 Good 38 40
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
SBCAPE2206 J/kg
MLCAPE1495 J/kg
MUCAPE2206 J/kg
SBCIN0 J/kg
MLCIN-11 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear9 kt
0–1 km Shear2 kt
Eff. Shear8 kt
0–1 km SRH-5
0–3 km SRH7
Eff. SRH7
Storm Motion130° @ 19 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.2
Thermo & Levels
PWAT1.68 in
0–3 km LR8.8 °C/km
700–500 LR5.2 °C/km
Total Totals46.0
LCL777 hPa
LFC979 hPa
EL152 hPa
Freezing Lvl16,240 ft