Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 27-Sep-2026 8:00pm - next update at 8:05pm  
Summary / Temperature Wind Precipitation Outlook


Night time, Dry, A few clouds
Night time, Dry, A few clouds

88.3°F Colder 2.1°F than last hour.
Warm
Currently 88.3, Max: 95.6, Min: 74.9 Feels like:
92°F

24-hr
difference
1.9°FWarmer 1.9°F than yesterday at this time.
TEMP HIGH LOW
Today 95.6°F
3:06pm
74.9°F
7:26am
Yesterday 94.4°F
3:55pm
69.2°F
4:46am
Record 103°F
1953
40°F
1942
Normal 85°F
65°F
 Wind from SSE SSE
4.2
Gust:
5.5
Light Breeze

60-Min Avg: 6.9 mph
120-Min Avg: 9.2 mph
Max Gust: 19.8 mph 12:22pm
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
70 days since last rain
Monday

Monday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms

Barometer Humidity/Dew Point Moon
Current: 29.820 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Rising slowly
High: 29.935  |  Low: 29.789
Humidity: 50 % Increased 3% since last hour.
Humidex: 101.4°F
Dewpoint: 67.3°F Decreased 0.2°F since last hour.
Wetbulb: 74.4°F
Waning Gibbous
Waning Gibbous, Moon at 16 days in cycle
98%
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: 800 at  1:30pm
Apparent Temp: 91.7°F
Heat Index Cooling Degree Days Sun
Current: 91.6°F
Today: 103.8°F  2:38pm
Yesterday: 97.8°F
Last Week: 106.3°F
Record: 127.2°F   26-Aug-2023
Today: 11.8
September: 588.3
2026 to Date: 3280.8
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
11:57 hrs:min
-00:02:01 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:19am
Sunset: 7:16pm
Moonrise: 7:47pm
Moonset: 9:22am
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.23 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.49 in   
7-Day: -1.49 in 1.49 in water in deficit of what evaporated in last 7 days.
September: -6.11 in 6.11 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 5561 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:
21.2 at 8:00 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 Monday's Outlook
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Lo 73 °F
NWS forecast: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Monday

Monday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms

Hi 93 °F
NWS forecast: A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny. High near 93, with temperatures falling to around 91 in the afternoon. Heat index values as high as 99. Southeast 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
Monday

Monday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Mostly Cloudy
Mostly Cloudy
Wednesday

Wednesday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Wednesday
Night
Wednesday Night: Showers And Thunderstorms
Showers And T-Storms
Thursday

Thursday: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And T-Storms Likely then Chance Showers And T-Storms
Hi 93 °F Lo 74 °F Hi 96 °F Lo 74 °F Hi 91 °F Lo 73 °F Hi 84 °F Lo 69 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.