Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 18-Sep-2026 5:45pm - next update at 5:50pm  
Summary / Temperature Wind Precipitation Outlook


Mostly cloudy, Dry
Mostly cloudy, Dry

93.2°F Colder 2.3°F than last hour.
Hot
Currently 93.2, Max: 98.0, Min: 76.9 Feels like:
96°F

24-hr
difference
-3.6°FColder 3.6°F than yesterday at this time.
TEMP HIGH LOW
Today 98.0°F
3:25pm
76.9°F
7:19am
Yesterday 99.8°F
3:32pm
80.3°F
7:09am
Record 100°F
1975
47°F
1981
Normal 88°F
68°F
 Wind from S S
2.2
Gust:
3.3
Light Air

60-Min Avg: 6.9 mph
120-Min Avg: 2.3 mph
Max Gust: 17.6 mph 4:35pm
Month: 26.5 mph Sep 11
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/4/2026
6:09 PM
September: 0.00 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 58 in 2026
45 days since last rain
Tonight

Tonight: Clear
Clear

Barometer Humidity/Dew Point Moon
Current: 29.986 inHg  
1-Hr Trend: Steady
3-Hr Trend: Falling
High: 30.147  |  Low: 29.984
Humidity: 41 % Increased 3% since last hour.
Humidex: 105.2°F
Dewpoint: 66.0°F Decreased 0.1°F since last hour.
Wetbulb: 75.2°F
Waxing Gibbous
Waxing Gibbous, Moon at 7 days in cycle
51%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 4.3 @ 1:23pm
Time to Burn: 720 Mins
Energy: 0 W/m2 (35%)
High: 833 at  1:32pm
Apparent Temp: 103.3°F
Heat Index Cooling Degree Days Sun
Current: 96.1°F
Today: 103.2°F  3:36pm
Yesterday: 109.2°F
Last Week: 116.5°F
Record: 127.2°F   26-Aug-2023
Today: 13.6
September: 416.9
2026 to Date: 3108.9
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:18 hrs:min
-00:02:01 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:12am
Sunset: 7:30pm
Moonrise: 2:37pm
Moonset: 11:19pm
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.22 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.78 in   
7-Day: -1.78 in 1.78 in water in deficit of what evaporated in last 7 days.
September: -4.18 in 4.18 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 6981 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:19 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
36.0 at 5:45 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  -   This Afternoon's and Tonight's Outlook
This
Afternoon
This Afternoon: Sunny
Sunny

Hi 99 °F
NWS forecast: Sunny. High near 99, with temperatures falling to around 97 in the afternoon. Heat index values as high as 101. Southeast wind 5 to 10 mph.
Tonight

Tonight: Clear
Clear

Lo 77 °F
NWS forecast: Clear. Low around 77, with temperatures rising to around 79 overnight. Heat index values as high as 98. South wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Clear
Clear
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday

Monday: Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Rain Showers then Slight 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: Mostly Sunny
Mostly Sunny
Lo 77 °F Hi 99 °F Lo 77 °F Hi 99 °F Lo 76 °F Hi 94 °F Lo 73 °F Hi 93 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.