Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 23-Sep-2026 4:55pm - next update at 5:00pm  
Summary / Temperature Wind Precipitation Outlook


Partly cloudy, Dry
Partly cloudy, Dry

95.4°F Colder 1.3°F than last hour.
Dangerously Hot
Currently 95.4, Max: 97.9, Min: 75.7 Feels like:
101°F

24-hr
difference
0.3°FWarmer 0.3°F than yesterday at this time.
TEMP HIGH LOW
Today 97.9°F
3:37pm
75.7°F
7:19am
Yesterday 96.7°F
3:38pm
72.9°F
7:29am
Record 101°F
2023
44°F
1995
Normal 87°F
66°F
 Wind from ENE ENE
3.8
Gust:
1.1
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 1.2 mph
Max Gust: 16.5 mph 12:23am
Month: 27.5 mph Sep 20
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
7/19/2026
7:44 PM
September: 0.00 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 57 in 2026
66 days since last rain
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Barometer Humidity/Dew Point Moon
Current: 29.975 inHg Falling 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Falling
High: 30.079  |  Low: 29.973
Humidity: 39 % Decreased 2% since last hour.
Humidex: 107.8°F
Dewpoint: 66.5°F Decreased 2.5°F since last hour.
Wetbulb: 76.1°F
Waxing Gibbous
Waxing Gibbous, Moon at 11 days in cycle
92%
Illuminated
Current UV Index Current Solar Energy
   0.9    Low 
High: 4.3 @ 1:39pm
Time to Burn: 124 Mins
Energy: 0 W/m2 (55%)
High: 747 at  1:39pm
Apparent Temp: 106.4°F
Heat Index Cooling Degree Days Sun
Current: 100.7°F
Today: 106.7°F  3:13pm
Yesterday: 104.7°F
Last Week: 108.7°F
Record: 127.2°F   26-Aug-2023
Today: 10.7
September: 517.6
2026 to Date: 3209.9
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:08 hrs:min
-00:02:02 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:15am
Sunset: 7:23pm
Moonrise: 5:52pm
Moonset: 4:08am
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.29 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.61 in   
7-Day: -1.61 in 1.61 in water in deficit of what evaporated in last 7 days.
September: -5.28 in 5.28 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 7366 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:19 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
40.4 at 4:55 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  -   This Afternoon's and Tonight's Outlook
This
Afternoon
This Afternoon: Partly Sunny
Partly Sunny

Hi 97 °F
NWS forecast: Partly sunny, with a high near 97. Heat index values as high as 101. East wind around 10 mph.
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 74 °F
NWS forecast: Mostly cloudy. Low around 74, with temperatures rising to around 76 overnight. Heat index values as high as 98. East wind around 10 mph, with gusts as high as 20 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Thursday

Thursday: Partly Sunny
Partly Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Partly Sunny
Partly Sunny
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Partly Sunny
Partly Sunny
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday

Sunday: Slight Chance Rain Showers
Slight Chance Rain Showers
Lo 74 °F Hi 94 °F Lo 70 °F Hi 93 °F Lo 73 °F Hi 95 °F Lo 75 °F Hi 96 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.