Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 24-May-2026 11:30pm - next update at 11:35pm  
Summary / Temperature Wind Precipitation Outlook


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

72.4°F Colder 0.9°F than last hour.
Comfortable
Currently 72.4, Max: 87.2, Min: 67.0 Feels like:
72°F

24-hr
difference
-0.9°FColder 0.9°F than yesterday at this time.
TEMP HIGH LOW
Today 87.2°F
3:37pm
67.0°F
5:22am
Yesterday 83.6°F
5:23pm
64.8°F
4:34am
Record 96°F
1996
54°F
1940
Normal 86°F
67°F
 Calm W
0.0
Gust:
0.0
Calm

60-Min Avg: Calm
120-Min Avg: Calm
Max Gust: 25.3 mph 5:46pm
Month: 41.7 mph May 17
Today: 0.00 in
Yesterday: 0.68 in
Last
Rain:
5/23/2026
9:05 PM
May: 3.27 in
Last 7 Days: 1.39 in
Rain Season:1 14.18 in
Rain Days: 41 in 2026
7 rain days in May
Memorial
Day
Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 87. East northeast wind around 5 mph.
Sunny then
Slight Chance
T-storms

Barometer Humidity/Dew Point Moon
Current: 29.988 inHg Falling 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 30.010  |  Low: 29.931
Humidity: 83 % Increased 3% since last hour.
Humidex: 85.2°F
Dewpoint: 66.9°F Increased 0.2°F since last hour.
Wetbulb: 68.9°F
Waxing Gibbous
Waxing Gibbous, Moon at 9 days in cycle
68%
Illuminated
UV Forecast Current Solar Energy
24-May-2026   Very High   8.8   
25-May-2026   Very High   8.5   
26-May-2026   Very High   8.4   
Energy: 0 W/m2 (0%)
High: 924 at  12:45pm
Apparent Temp: 77.3°F
Heat Index Cooling Degree Days Sun
Current: 72.3°F
Today: 93.1°F  3:37pm
Yesterday: 86.0°F
Last Week: 97.8°F
Record: 127.2°F   26-Aug-2023
Today: 7.5
May: 192.8
2026 to Date: 554.5
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
14:05 hrs:min
+ 00:01:08 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:21am
Sunset: 8:26pm
Moonrise: 3:32pm
Moonset: 2:58am
Full Moon: May 31 2026
New Moon: 02:55 UTC June 15 2026
Updated at Midnight
Current: 0.20 in   
7-Days Rain: 1.39 in   
7-Days ET: 1.09 in   
7-Day: 0.3 in 0.3 in water in excess of what evaporated in last 7 days.
May: -0.87 in 0.87 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.19 kg/m3
Cloud Height: 2004 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:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
0.4 at 11:30 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 Memorial Day's Outlook
Tonight

Tonight: Partly cloudy, with a low around 68. South wind around 5 mph becoming northeast after midnight.
Partly Cloudy


Lo 68 °F
NWS forecast: Partly cloudy, with a low around 68. South wind around 5 mph becoming northeast after midnight.
Memorial
Day
Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 87. East northeast wind around 5 mph.
Sunny then
Slight Chance
T-storms

Hi 87 °F
NWS forecast: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87. East northeast wind around 5 mph.
 NWS NWS Short Term Weather Forecast
Memorial
Day
Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 87. East northeast wind around 5 mph.
Sunny then
Slight Chance
T-storms
Monday
Night
Monday Night: Mostly clear, with a low around 68. East southeast wind 5 to 10 mph.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 87. South wind around 5 mph.
Sunny

Tuesday
Night
Tuesday Night: Showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 70. Southeast wind around 5 mph.  Chance of precipitation is 60%.
Partly Cloudy
then Showers
Likely
Wednesday

Wednesday: Showers and possibly a thunderstorm.  High near 82. South southeast wind 5 to 10 mph.  Chance of precipitation is 90%.
Showers

Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Southeast wind around 5 mph.
Chance
T-storms
Thursday

Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly cloudy, with a high near 84. South southeast wind around 5 mph.
Chance
T-storms
Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 70. East southeast wind around 5 mph becoming calm  after midnight.
Slight Chance
T-storms
Hi 87 °F Lo 68 °F Hi 87 °F Lo 70 °F Hi 82 °F Lo 68 °F Hi 84 °F Lo 70 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.