Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 28-Aug-2026 10:35am - next update at 10:40am  
Summary / Temperature Wind Precipitation Outlook


Sunny, Dry
Sunny, Dry

90.8°F Warmer 3.8°F than last hour.
Hot
Currently 90.8, Max: 91.2, Min: 75.2 Feels like:
100°F

24-hr
difference
2°FWarmer 2°F than yesterday at this time.
TEMP HIGH LOW
Today 91.2°F
10:30am
75.2°F
6:39am
Yesterday 99.8°F
4:10pm
77.8°F
7:03am
Record 108°F
1901
56°F
1906
Normal 94°F
74°F
 Wind from E E
3.4
Gust:
1.1
Light Breeze

60-Min Avg: Calm
120-Min Avg: 2.3 mph
Max Gust: 9.2 mph 10:32am
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
24 days since last rain
Tonight

Tonight: Clear
Clear

Barometer Humidity/Dew Point Moon
Current: 30.033 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Rising slowly
High: 30.036  |  Low: 29.962
Humidity: 57 % Decreased 7% since last hour.
Humidex: 109.4°F
Dewpoint: 73.5°F Increased 0.2°F since last hour.
Wetbulb: 78.7°F
Full Moon
Full Moon, Moon at 15 days in cycle
100%
Illuminated
Current UV Index Current Solar Energy
   2.2    Low 
High: 2.2 @ 10:29am
Time to Burn: 51 Mins
Energy: 0 W/m2 (91%)
High: 551 at  10:34am
Apparent Temp: 109.0°F
Heat Index Cooling Degree Days Sun
Current: 100.4°F
Today: 102.0°F  10:30am
Yesterday: 109.1°F
Last Week: 116.0°F
Record: 127.2°F   26-Aug-2023
Today: 6.6
August: 702.5
2026 to Date: 2596.6
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:00 hrs:min
-00:01:55 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:58am
Sunset: 7:58pm
Moonrise: 7:53pm
Moonset: 7:23am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.08 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.79 in   
7-Day: -1.8 in 1.8 in water in deficit of what evaporated in last 7 days.
August: -8.02 in 8.02 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 4723 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:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
14.1 at 10:35 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 100 °F
NWS forecast: Sunny, with a high near 100. Heat index values as high as 101. East northeast wind 0 to 5 mph.
Tonight

Tonight: Clear
Clear

Lo 77 °F
NWS forecast: Clear. Low around 77, with temperatures rising to around 79 overnight. Heat index values as high as 97. East wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Clear
Clear
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Sunny
Sunny
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday

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

Tuesday: Sunny
Sunny
Lo 77 °F Hi 100 °F Lo 79 °F Hi 101 °F Lo 79 °F Hi 100 °F Lo 79 °F Hi 99 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.