Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 28-Sep-2026 9:40am - next update at 9:45am  
Summary / Temperature Wind Precipitation Outlook


Overcast, Dry
Overcast, Dry

75.6°F Warmer 2.5°F than last hour.
Comfortable
Currently 75.6, Max: 83.4, Min: 73.0 Feels like:
77°F

24-hr
difference
-5.1°FColder 5.1°F than yesterday at this time.
TEMP HIGH LOW
Today 83.4°F
12:00am
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 ENE ENE
1.5
Gust:
0.0
Light Air

60-Min Avg: 4.6 mph
120-Min Avg: 3.5 mph
Max Gust: 12.7 mph 2:11am
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
71 days since last rain
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Barometer Humidity/Dew Point Moon
Current: 29.937 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Rising
High: 29.937  |  Low: 29.865
Humidity: 79 % Decreased 3% since last hour.
Humidex: 89.8°F
Dewpoint: 68.6°F Increased 1.5°F since last hour.
Wetbulb: 71.0°F
Waning Gibbous
Waning Gibbous, Moon at 16 days in cycle
95%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 0.0 @ 12:00am
Time to Burn: 720 Mins
Energy: 0 W/m2 (12%)
High: 92 at  9:20am
Apparent Temp: 85.5°F
Heat Index Cooling Degree Days Sun
Current: 76.6°F
Today: 85.8°F  12:00am
Yesterday: 103.8°F
Last Week: 106.3°F
Record: 127.2°F   26-Aug-2023
Today: 6.1
September: 601.8
2026 to Date: 3294.4
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: 0.06 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: -6.33 in 6.33 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.18 kg/m3
Cloud Height: 2351 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:3 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
1.4 at 09:40 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: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 91 °F
NWS forecast: A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms. Mostly sunny. High near 91, with temperatures falling to around 89 in the afternoon. Heat index values as high as 97. Southeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 74 °F
NWS forecast: A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
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
Friday

Friday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Lo 74 °F Hi 94 °F Lo 75 °F Hi 93 °F Lo 73 °F Hi 83 °F Lo 69 °F Hi 79 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.