Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 26-Sep-2026 11:00pm - next update at 11:05pm  
Summary / Temperature Wind Precipitation Outlook


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

81.8°F Colder 1.3°F than last hour.
Warm
Currently 81.8, Max: 94.4, Min: 69.2 Feels like:
83°F

24-hr
difference
4°FWarmer 4°F than yesterday at this time.
TEMP HIGH LOW
Today 94.4°F
3:55pm
69.2°F
4:46am
Yesterday 91.6°F
4:02pm
68.2°F
7:51am
Record 100°F
1977
45°F
1942
Normal 86°F
65°F
 Wind from SSE SSE
3.3
Gust:
2.2
Light Breeze

60-Min Avg: 8.1 mph
120-Min Avg: 4.6 mph
Max Gust: 22.0 mph 9:44pm
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
69 days since last rain
Sunday

Sunday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Barometer Humidity/Dew Point Moon
Current: 29.932 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Rising
High: 30.037  |  Low: 29.862
Humidity: 52 % Increased 4% since last hour.
Humidex: 91.2°F
Dewpoint: 62.5°F Increased 1.1°F since last hour.
Wetbulb: 69.6°F
Full Moon
Full Moon, Moon at 15 days in cycle
100%
Illuminated
UV Forecast Current Solar Energy
27-Sep-2026   High   7.5   
28-Sep-2026   High   7.6   
29-Sep-2026   High   7.5   
Energy: 0 W/m2 (0%)
High: 743 at  11:06am
Apparent Temp: 84.1°F
Heat Index Cooling Degree Days Sun
Current: 82.8°F
Today: 97.8°F  2:10pm
Yesterday: 94.8°F
Last Week: 107.9°F
Record: 127.2°F   26-Aug-2023
Today: 10.2
September: 570.2
2026 to Date: 3262.7
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:00 hrs:min
-00:02:03 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:18am
Sunset: 7:18pm
Moonrise: 7:16pm
Moonset: 8:16am
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.20 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.53 in   
7-Day: -1.54 in 1.54 in water in deficit of what evaporated in last 7 days.
September: -5.92 in 5.92 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.17 kg/m3
Cloud Height: 5183 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:97%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
18.1 at 11:00 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  -   Tonight's and Sunday's Outlook
Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 75 °F
NWS forecast: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Sunday

Sunday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Hi 94 °F
NWS forecast: A slight chance of showers and thunderstorms after 7am. Mostly sunny. High near 94, with temperatures falling to around 92 in the afternoon. Heat index values as high as 98. South wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
 NWS NWS Short Term Weather Forecast
Sunday

Sunday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Monday

Monday: Chance Rain Showers then Mostly Sunny
Chance Rain Showers then Mostly Sunny
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday

Tuesday: Partly Sunny
Partly Sunny
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday

Wednesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Hi 94 °F Lo 75 °F Hi 94 °F Lo 76 °F Hi 95 °F Lo 76 °F Hi 89 °F Lo 72 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.