Extreme Heat Warning EXTREME HEAT WARNING - Plano, Collin County, Texas
Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 23-Aug-2026 11:30am - next update at 11:35am  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

97.8°F Warmer 5.4°F than last hour.
Dangerously Hot
Currently 97.8, Max: 98.0, Min: 81.7 Feels like:
105°F

24-hr
difference
0.1°FWarmer 0.1°F than yesterday at this time.
TEMP HIGH LOW
Today 98.0°F
11:28am
81.7°F
7:27am
Yesterday 103.0°F
12:47pm
80.3°F
6:45am
Record 107°F
2010
64°F
1961
Normal 95°F
75°F
 Wind from SSE SSE
3.4
Gust:
5.5
Light Breeze

60-Min Avg: 4.6 mph
120-Min Avg: 3.5 mph
Max Gust: 13.2 mph 2:58am
Month: 30.8 mph Aug 9
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/4/2026
6:09 PM
August: 0.01 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 58 in 2026
19 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.953 inHg  
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 29.966  |  Low: 29.892
Humidity: 38 % Decreased 7% since last hour.
Humidex: 111.3°F
Dewpoint: 67.9°F Increased 0.3°F since last hour.
Wetbulb: 77.6°F
Waxing Gibbous
Waxing Gibbous, Moon at 10 days in cycle
82%
Illuminated
Current UV Index Current Solar Energy
   3.6    Medium 
High: 3.6 @ 11:25am
Time to Burn: 31 Mins
Energy: 0 W/m2 (76%)
High: 689 at  11:29am
Apparent Temp: 116.1°F
Heat Index Cooling Degree Days Sun
Current: 104.8°F
Today: 104.9°F  11:28am
Yesterday: 116.1°F
Last Week: 114.9°F
Record: 127.2°F   26-Aug-2023
Today: 10.1
August: 568.8
2026 to Date: 2462.5
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:09 hrs:min
-00:01:52 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:55am
Sunset: 8:04pm
Moonrise: 5:34pm
Moonset: 2:22am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.19 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.94 in   
7-Day: -1.94 in 1.94 in water in deficit of what evaporated in last 7 days.
August: -6.66 in 6.66 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 7601 ft
HIGHS: LOWS:
111.0°F
Aug 18 2023
-2.0°F
Feb 16 2021
Daytime Records
108.1°F
Aug 19 2024
3.6°F
Feb 15 2021
Nitetime Records
95.2°F
Aug 11 2023
2.1°F
Feb 16 2021
ICN:0 ISS:Ok CON:4.6 RCP:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
43.0 at 11:30 AM
1 Rain season: Jan 1st to Dec 31st.    5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present.)
 NWS Weather Forecast  -   Today's and Tonight's Outlook
Today

Today: Sunny
Sunny

Hi 106 °F
NWS forecast: Sunny, with a high near 106. Heat index values as high as 106. South wind 5 to 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 84 °F
NWS forecast: Mostly clear. Low around 84, with temperatures rising to around 87 overnight. Heat index values as high as 105. South wind 5 to 10 mph, with gusts as high as 20 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
Monday

Monday: Mostly Sunny
Mostly Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Thursday

Thursday: Sunny
Sunny
Lo 84 °F Hi 106 °F Lo 83 °F Hi 105 °F Lo 82 °F Hi 100 °F Lo 79 °F Hi 101 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.