Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 28-Sep-2026 7:55pm - next update at 8:00pm  
Summary / Temperature Wind Precipitation Outlook


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

84.3°F Colder 1.4°F than last hour.
Warm
Currently 84.3, Max: 91.2, Min: 73.0 Feels like:
87°F

24-hr
difference
-4.2°FColder 4.2°F than yesterday at this time.
TEMP HIGH LOW
Today 91.2°F
3:39pm
73.0°F
8:36am
Yesterday 95.6°F
3:06pm
74.9°F
7:26am
Record 105°F
1953
40°F
1908
Normal 85°F
64°F
 Wind from E E
8.7
Gust:
6.6
Gentle Breeze

60-Min Avg: 9.2 mph
120-Min Avg: 4.6 mph
Max Gust: 19.8 mph 6:22pm
Month: 27.5 mph Sep 20
Today: 0.02 in
Yesterday: 0.00 in
Last
Rain:
9/28/2026
10:44 AM
September: 0.02 in
Last 7 Days: 0.00 in
Rain Season:1 22.56 in
Rain Days: 57 in 2026
1 rain day in September
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny

Barometer Humidity/Dew Point Moon
Current: 29.825 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 29.947  |  Low: 29.813
Humidity: 58 %  
Humidex: 97.9°F
Dewpoint: 67.9°F Decreased 1.3°F since last hour.
Wetbulb: 73.4°F
Waning Gibbous
Waning Gibbous, Moon at 17 days in cycle
93%
Illuminated
UV Forecast Current Solar Energy
28-Sep-2026   High   7.4   
29-Sep-2026   High   7.5   
30-Sep-2026   High   7.6   
Energy: 0 W/m2 (0%)
High: 818 at  1:50pm
Apparent Temp: 85.4°F
Heat Index Cooling Degree Days Sun
Current: 87.5°F
Today: 98.8°F  3:45pm
Yesterday: 103.8°F
Last Week: 106.0°F
Record: 127.2°F   26-Aug-2023
Today: 11.7
September: 607.4
2026 to Date: 3300.0
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
11:56 hrs:min
-00:02:02 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:19am
Sunset: 7:15pm
Moonrise: 8:21pm
Moonset: 10:31am
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.18 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.47 in   
7-Day: -1.47 in 1.47 in water in deficit of what evaporated in last 7 days.
September: -6.31 in 6.31 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 4506 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:
12.6 at 7:55 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  -   Tonight's and Tuesday's Outlook
Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 74 °F
NWS forecast: Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny

Hi 94 °F
NWS forecast: Mostly sunny, with a high near 94. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
 NWS NWS Short Term Weather Forecast
Tuesday

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

Wednesday: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms
Chance Showers And T-Storms then Showers And T-Storms
Thursday

Thursday: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Hi 94 °F Lo 75 °F Hi 93 °F Lo 74 °F Hi 84 °F Lo 70 °F Hi 79 °F Lo 67 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.