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

Freestone County, Texas, United States

Last updated: 4:52 PM CDT  ·  Refresh
35°C
Feels like 36°
Clear
▲ 37°  /  ▼ 22°
Wind
9 mph SSE
Humidity
37%
Dew Point
21°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
6.6
Cloud Cover
4%
Sunrise
7:06 AM
Sunset
7:32 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Freestone County is currently clear at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2135 J/kg) — isolated convective development possible. Sunrise: 7:06AM · Sunset: 7:32PM.

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
35°
3%
5 PM
36°
4%
6 PM
34°
4%
7 PM
32°
4%
8 PM
31°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
24°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
26°
3%
10 AM
27°
3%
11 AM
30°
3%
12 PM
31°
3%
1 PM
33°
3%
2 PM
33°
3%
3 PM
33°
3%
7-Day Forecast
Today
37° 22°
Clear.
Mon
37° 22°
Clear.
Tue
38° 22°
Mostly Clear.
Wed
36° 22°
Mostly Clear.
Thu
36° 23°
Partly Cloudy.
Fri
36° 22°
Clear.
Sat
36° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Clear 3% 9 mph SSE 37%
5 PM 36° Clear 4% 11 mph SSE 37%
6 PM 34° Clear 4% 10 mph SSE 41%
7 PM 32° Clear 4% 9 mph SSE 47%
8 PM 31° Clear 3% 9 mph SSE 54%
9 PM 29° Clear 3% 10 mph SSE 58%
10 PM 28° Clear 3% 9 mph SSE 61%
11 PM 27° Mostly Clear 3% 9 mph S 65%
12 AM 27° Mostly Clear 3% 8 mph S 69%
1 AM 26° Mostly Clear 3% 7 mph S 73%
2 AM 26° Clear 3% 7 mph S 78%
3 AM 25° Clear 3% 6 mph S 82%
4 AM 24° Clear 3% 5 mph S 84%
5 AM 22° Clear 3% 5 mph S 85%
6 AM 22° Clear 3% 5 mph S 86%
7 AM 23° Clear 3% 5 mph S 82%
8 AM 25° Clear 3% 6 mph S 77%
9 AM 26° Clear 3% 7 mph SSW 73%
10 AM 27° Clear 3% 7 mph S 68%
11 AM 30° Clear 3% 7 mph S 62%
12 PM 31° Clear 3% 7 mph S 57%
1 PM 33° Clear 3% 8 mph S 55%
2 PM 33° Clear 3% 8 mph S 54%
3 PM 33° Mostly Clear 3% 9 mph SSE 53%
15-Day Forecast
Today
9/13
Clear
4%
22°
37°
Mon
9/14
Clear
3%
22°
37°
Tue
9/15
Mostly Clear
3%
22°
38°
Wed
9/16
Mostly Clear
3%
22°
36°
Thu
9/17
Partly Cloudy
11%
23°
36°
Fri
9/18
Clear
8%
22°
36°
Sat
9/19
Clear
17%
22°
36°
Sun
9/20
Mostly Clear
43%
22°
35°
Mon
9/21
Drizzle
60%
22°
34°
Tue
9/22
Drizzle
67%
19°
33°
Wed
9/23
Drizzle
67%
20°
32°
Thu
9/24
Drizzle
60%
21°
32°
Fri
9/25
Clear
60%
20°
32°
Sat
9/26
Clear
25%
19°
32°
Sun
9/27
Clear
60%
19°
32°
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 27
Wed 33 Good 33 30
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
SBCAPE2021 J/kg
MLCAPE1091 J/kg
MUCAPE2364 J/kg
SBCIN-11 J/kg
MLCIN-109 J/kg
Lifted Index-4.0
Kinematics
0–6 km Shear11 kt
0–1 km Shear7 kt
Eff. Shear12 kt
0–1 km SRH-14
0–3 km SRH37
Eff. SRH37
Storm Motion110° @ 20 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.9
Thermo & Levels
PWAT1.76 in
0–3 km LR8.1 °C/km
700–500 LR5.5 °C/km
Total Totals46.2
LCL813 hPa
LFC790 hPa
EL154 hPa
Freezing Lvl16,631 ft