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

Robertson County, Texas, United States

Last updated: 3:48 PM CDT  ·  Refresh
97°F
Feels like 102°
Clear
▲ 99°  /  ▼ 73°
Wind
9 mph S
Humidity
37%
Dew Point
68°
Pressure
29.45 inHg
Visibility
10 mi
UV Index
8.0
Cloud Cover
8%
Sunrise
7:08 AM
Sunset
7:34 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Robertson County is currently clear at 97°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2076 J/kg) — isolated convective development possible. Sunrise: 7:08AM · Sunset: 7:34PM.

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
29 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
97°
4%
4 PM
99°
13%
5 PM
97°
13%
6 PM
94°
13%
7 PM
91°
13%
8 PM
87°
13%
9 PM
84°
10%
10 PM
83°
5%
11 PM
81°
5%
12 AM
80°
3%
1 AM
79°
3%
2 AM
78°
3%
3 AM
77°
3%
4 AM
76°
3%
5 AM
73°
3%
6 AM
73°
3%
7 AM
74°
3%
8 AM
77°
3%
9 AM
79°
3%
10 AM
84°
3%
11 AM
86°
3%
12 PM
87°
3%
1 PM
92°
3%
2 PM
93°
3%
7-Day Forecast
Today
99° 73°
Clear.
Mon
101° 73°
Partly Cloudy.
Tue
101° 73°
Partly Cloudy.
Wed
97° 70°
Mostly Clear.
Thu
98° 73°
Clear.
Fri
98° 72°
Clear.
Sat
98° 71°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 97° Clear 4% 9 mph S 37%
4 PM 99° Mostly Clear 13% 9 mph SSE 36%
5 PM 97° Mostly Clear 13% 10 mph S 39%
6 PM 94° Clear 13% 12 mph SSE 43%
7 PM 91° Partly Cloudy 13% 11 mph S 48%
8 PM 87° Partly Cloudy 13% 11 mph S 55%
9 PM 84° Partly Cloudy 10% 10 mph S 60%
10 PM 83° Partly Cloudy 5% 10 mph S 66%
11 PM 81° Partly Cloudy 5% 9 mph S 71%
12 AM 80° Clear 3% 9 mph S 77%
1 AM 79° Clear 3% 8 mph S 81%
2 AM 78° Clear 3% 6 mph S 84%
3 AM 77° Clear 3% 5 mph S 87%
4 AM 76° Mostly Clear 3% 4 mph S 89%
5 AM 73° Mostly Clear 3% 4 mph S 91%
6 AM 73° Partly Cloudy 3% 4 mph SSE 93%
7 AM 74° Mostly Clear 3% 4 mph S 88%
8 AM 77° Mostly Clear 3% 5 mph S 80%
9 AM 79° Mostly Clear 3% 6 mph S 74%
10 AM 84° Mostly Clear 3% 6 mph S 68%
11 AM 86° Mostly Clear 3% 6 mph S 63%
12 PM 87° Partly Cloudy 3% 7 mph S 58%
1 PM 92° Partly Cloudy 3% 7 mph S 55%
2 PM 93° Partly Cloudy 3% 8 mph S 53%
15-Day Forecast
Today
9/13
Clear
13%
73°
99°
Mon
9/14
Partly Cloudy
7%
73°
101°
Tue
9/15
Partly Cloudy
3%
73°
101°
Wed
9/16
Mostly Clear
8%
70°
97°
Thu
9/17
Clear
9%
73°
98°
Fri
9/18
Clear
3%
72°
98°
Sat
9/19
Clear
19%
71°
98°
Sun
9/20
Clear
60%
72°
96°
Mon
9/21
Drizzle
60%
71°
95°
Tue
9/22
Drizzle
60%
66°
94°
Wed
9/23
Drizzle
60%
68°
92°
Thu
9/24
Clear
60%
70°
92°
Fri
9/25
Drizzle
60%
69°
91°
Sat
9/26
Clear
25%
68°
91°
Sun
9/27
Clear
60%
68°
92°
29
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
29 AQI 5.4 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 29 Good 27 29
Tue 31 Good 31 22
Wed 31 Good 31 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, 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
SBCAPE2013 J/kg
MLCAPE1309 J/kg
MUCAPE2013 J/kg
SBCIN0 J/kg
MLCIN-14 J/kg
Lifted Index-3.3
Kinematics
0–6 km Shear8 kt
0–1 km Shear2 kt
Eff. Shear13 kt
0–1 km SRH-6
0–3 km SRH12
Eff. SRH12
Storm Motion142° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.7
Thermo & Levels
PWAT1.78 in
0–3 km LR8.7 °C/km
700–500 LR5.2 °C/km
Total Totals45.3
LCL789 hPa
LFC997 hPa
EL165 hPa
Freezing Lvl16,532 ft