Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 23-Sep-2026 5:30am - next update at 5:35am  
Summary / Temperature Wind Precipitation Outlook


Night time, Dry, Clear skies
Night time, Dry, Clear skies

76.7°F Colder 0.7°F than last hour.
Comfortable
Currently 76.7, Max: 83.1, Min: 76.7 Feels like:
78°F

24-hr
difference
2.8°FWarmer 2.8°F than yesterday at this time.
TEMP HIGH LOW
Today 83.1°F
12:00am
76.7°F
5:15am
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 ESE ESE
4.0
Gust:
4.4
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 3.5 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
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Barometer Humidity/Dew Point Moon
Current: 30.002 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 30.011  |  Low: 29.993
Humidity: 74 % Increased 3% since last hour.
Humidex: 90.2°F
Dewpoint: 67.8°F Increased 0.5°F since last hour.
Wetbulb: 70.9°F
Waxing Gibbous
Waxing Gibbous, Moon at 11 days in cycle
89%
Illuminated
UV Forecast Current Solar Energy
23-Sep-2026   High   7.8   
24-Sep-2026   High   7.5   
25-Sep-2026   High   7.4   
Energy: 0 W/m2 (0%)
High: 0 at  12:00am
Apparent Temp: 79.9°F
Heat Index Cooling Degree Days Sun
Current: 78.3°F
Today: 85.0°F  12:00am
Yesterday: 104.7°F
Last Week: 108.8°F
Record: 127.2°F   26-Aug-2023
Today: 3.4
September: 510.3
2026 to Date: 3202.6
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: 0.07 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: 1.18 kg/m3
Cloud Height: 2795 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:1 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
3.0 at 05:30 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  -   Overnight's and Wednesday's Outlook
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 74 °F
NWS forecast: Mostly clear. Low around 74, with temperatures rising to around 76 overnight. East northeast wind 5 to 10 mph.
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Hi 95 °F
NWS forecast: Mostly sunny. High near 95, with temperatures falling to around 93 in the afternoon. Heat index values as high as 99. East wind around 10 mph.
 NWS NWS Short Term Weather Forecast
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
Thursday

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

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

Saturday: Partly Sunny
Partly Sunny
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Hi 95 °F Lo 74 °F Hi 94 °F Lo 70 °F Hi 92 °F Lo 72 °F Hi 95 °F Lo 76 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.