Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 31-Aug-2026 1:05pm - next update at 1:10pm  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

98.8°F Warmer 3.2°F than last hour.
Dangerously Hot
Currently 98.8, Max: 99.0, Min: 81.2 Feels like:
104°F

24-hr
difference
-0.4°FColder 0.4°F than yesterday at this time.
TEMP HIGH LOW
Today 99.0°F
1:02pm
81.2°F
6:44am
Yesterday 102.0°F
4:33pm
78.8°F
6:06am
Record 108°F
2000
55°F
1915
Normal 93°F
73°F
 Wind from SSE SSE
5.9
Gust:
2.2
Light Breeze

60-Min Avg: 2.3 mph
120-Min Avg: 4.6 mph
Max Gust: 15.4 mph 10:42am
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
27 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.981 inHg Falling 0.02 °F/hr
1-Hr Trend: Falling slowly
3-Hr Trend: Falling slowly
High: 30.013  |  Low: 29.906
Humidity: 37 % Decreased 6% since last hour.
Humidex: 112.4°F
Dewpoint: 68.0°F Decreased 1.7°F since last hour.
Wetbulb: 77.9°F
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
86%
Illuminated
Current UV Index Current Solar Energy
   4.8    Medium 
High: 4.8 @ 12:59pm
Time to Burn: 23 Mins
Energy: 0 W/m2 (74%)
High: 806 at  1:04pm
Apparent Temp: 117.5°F
Heat Index Cooling Degree Days Sun
Current: 104.2°F
Today: 106.7°F  12:41pm
Yesterday: 107.7°F
Last Week: 115.4°F
Record: 127.2°F   26-Aug-2023
Today: 11.4
August: 782.1
2026 to Date: 2676.4
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:54 hrs:min
-00:01:55 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:00am
Sunset: 7:54pm
Moonrise: 9:14pm
Moonset: 10:27am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.23 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.87 in   
7-Day: -1.87 in 1.87 in water in deficit of what evaporated in last 7 days.
August: -8.83 in 8.83 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 7805 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:9 ISS:Ok CON:4.6 RCP:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
45.4 at 1:05 PM
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 100 °F
NWS forecast: Sunny, with a high near 100. Heat index values as high as 101. South wind 5 to 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 80 °F
NWS forecast: Mostly clear. Low around 80, with temperatures rising to around 82 overnight. Heat index values as high as 101. South southeast wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
Tuesday

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

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday

Friday: Sunny
Sunny
Lo 80 °F Hi 99 °F Lo 78 °F Hi 97 °F Lo 78 °F Hi 97 °F Lo 77 °F Hi 97 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.