Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 01-Sep-2026 1:25am - next update at 1:30am  
Summary / Temperature Wind Precipitation Outlook


Night time, Dry, Cloudy with clear patches
Night time, Dry, Cloudy with clear patches

86.5°F Colder 0.5°F than last hour.
Warm
Currently 86.5, Max: 87.4, Min: 86.5 Feels like:
90°F

24-hr
difference
-0.3°FColder 0.3°F than yesterday at this time.
TEMP HIGH LOW
Today 87.4°F
12:41am
86.5°F
1:24am
Yesterday 101.6°F
1:58pm
81.2°F
6:44am
Record 109°F
2000
59°F
1915
Normal 93°F
73°F
 Wind from S S
3.4
Gust:
2.2
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: Calm
Max Gust: 12.7 mph 12:54am
Month: 12.1 mph Sep 1
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
28 days since last rain
Tuesday

Tuesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms

Barometer Humidity/Dew Point Moon
Current: 29.949 inHg Rising 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Rising slowly
High: 29.951  |  Low: 29.929
Humidity: 53 % Increased 3% since last hour.
Humidex: 99.6°F
Dewpoint: 67.3°F Increased 1.3°F since last hour.
Wetbulb: 73.8°F
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
82%
Illuminated
UV Forecast Current Solar Energy
01-Sep-2026   Very High   9.0   
02-Sep-2026   Very High   8.9   
03-Sep-2026   Very High   9.2   
Energy: 0 W/m2 (0%)
High: 0 at  12:00am
Apparent Temp: 90.2°F
Heat Index Cooling Degree Days Sun
Current: 89.7°F
Today: 90.4°F  12:48am
Yesterday: 106.7°F
Last Week: 110.2°F
Record: 127.2°F   26-Aug-2023
Today: 0.9
September: 0.9
2026 to Date: 2691.9
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:52 hrs:min
-00:01:57 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:01am
Sunset: 7:53pm
Moonrise: 9:45pm
Moonset: 11:32am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.10 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.50 in   
7-Day: -1.5 in 1.5 in water in deficit of what evaporated in last 7 days.
September: 0 in 
Irrigation System: Ready
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 5141 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:13 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
17.6 at 01:25 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  -   Overnight's and Tuesday's Outlook
Overnight

Overnight: Clear
Clear

Lo 80 °F
NWS forecast: Clear. Low around 80, with temperatures rising to around 82 overnight. South southeast wind around 5 mph.
Tuesday

Tuesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms

Hi 99 °F
NWS forecast: A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 99. Heat index values as high as 105. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
 NWS NWS Short Term Weather Forecast
Tuesday

Tuesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday

Wednesday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Thursday

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

Friday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Hi 99 °F Lo 78 °F Hi 98 °F Lo 77 °F Hi 93 °F Lo 77 °F Hi 97 °F Lo 79 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.