Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 27-Sep-2026 8:05am - next update at 8:10am  
Summary / Temperature Wind Precipitation Outlook


Sunny, Dry
Sunny, Dry

76.0°F Warmer 0.9°F than last hour.
Comfortable
Currently 76.0, Max: 81.0, Min: 74.9 Feels like:
77°F

24-hr
difference
5°FWarmer 5°F than yesterday at this time.
TEMP HIGH LOW
Today 81.0°F
12:00am
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 S S
1.4
Gust:
3.3
Light Air

60-Min Avg: 1.2 mph
120-Min Avg: 2.3 mph
Max Gust: 13.2 mph 12:19am
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
Tonight

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

Barometer Humidity/Dew Point Moon
Current: 29.926 inHg Rising 0.02 °F/hr
1-Hr Trend: Rising slowly
3-Hr Trend: Rising slowly
High: 29.935  |  Low: 29.894
Humidity: 75 % Increased 3% since last hour.
Humidex: 89.2°F
Dewpoint: 67.5°F Increased 2°F since last hour.
Wetbulb: 70.5°F
Full Moon
Full Moon, Moon at 15 days in cycle
99%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 0.0 @ 12:00am
Time to Burn: 720 Mins
Energy: 0 W/m2 (100%)
High: 57 at  8:02am
Apparent Temp: 85.7°F
Heat Index Cooling Degree Days Sun
Current: 77.2°F
Today: 82.1°F  12:22am
Yesterday: 97.8°F
Last Week: 107.9°F
Record: 127.2°F   26-Aug-2023
Today: 4.5
September: 581.0
2026 to Date: 3273.6
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: 0.06 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: 1.18 kg/m3
Cloud Height: 2700 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:
2.6 at 08:05 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: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Hi 95 °F
NWS forecast: A slight chance of showers and thunderstorms after 7am. Mostly sunny. High near 95, with temperatures falling to around 93 in the afternoon. Heat index values as high as 97. South wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight

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

Lo 74 °F
NWS forecast: A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
 NWS NWS Short Term Weather Forecast
Tonight

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

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Tuesday

Tuesday: Partly Sunny
Partly Sunny
Tuesday
Night
Tuesday Night: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Wednesday

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

Thursday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Lo 74 °F Hi 95 °F Lo 76 °F Hi 95 °F Lo 76 °F Hi 91 °F Lo 73 °F Hi 85 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.