Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 25-May-2026 12:30pm - next update at 12:35pm  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

86.1°F Warmer 2°F than last hour.
Warm
Currently 86.1, Max: 86.1, Min: 67.6 Feels like:
90°F

24-hr
difference
3.3°FWarmer 3.3°F than yesterday at this time.
TEMP HIGH LOW
Today 86.1°F
12:28pm
67.6°F
3:52am
Yesterday 87.2°F
3:37pm
67.0°F
5:22am
Record 97°F
1980
51°F
1979
Normal 87°F
68°F
 Wind from S S
4.8
Gust:
1.1
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 4.6 mph
Max Gust: 14.3 mph 10:29am
Month: 41.7 mph May 17
Today: 0.00 in
Yesterday: 0.00 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
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 68. East southeast wind around 5 mph.
Slight Chance
T-storms then
Mostly Cloudy

Barometer Humidity/Dew Point Moon
Current: 29.972 inHg Falling 0.01 °F/hr
1-Hr Trend: Falling slowly
3-Hr Trend: Falling
High: 30.006  |  Low: 29.963
Humidity: 56 % Decreased 4% since last hour.
Humidex: 100.2°F
Dewpoint: 68.6°F Decreased 0.2°F since last hour.
Wetbulb: 74.4°F
Waxing Gibbous
Waxing Gibbous, Moon at 9 days in cycle
73%
Illuminated
Current UV Index Current Solar Energy
   5.2    Medium 
High: 5.2 @ 12:23pm
Time to Burn: 22 Mins
Energy: 0 W/m2 (75%)
High: 946 at  12:29pm
Apparent Temp: 106.4°F
Heat Index Cooling Degree Days Sun
Current: 90.2°F
Today: 90.7°F  12:16pm
Yesterday: 93.1°F
Last Week: 97.8°F
Record: 127.2°F   26-Aug-2023
Today: 3.0
May: 199.2
2026 to Date: 560.9
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: 0.19 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: -1.06 in 1.06 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.16 kg/m3
Cloud Height: 4768 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:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
14.5 at 12:30 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  -   Memorial Day's and Tonight's Outlook
Memorial
Day
Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 86. East wind around 5 mph.
Slight Chance
T-storms


Hi 86 °F
NWS forecast: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. East wind around 5 mph.
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 68. East southeast wind around 5 mph.
Slight Chance
T-storms then
Mostly Cloudy

Lo 68 °F
NWS forecast: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 68. East southeast wind around 5 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 68. East southeast wind around 5 mph.
Slight Chance
T-storms then
Mostly Cloudy
Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm.  Partly sunny, with a high near 85. Southeast wind around 5 mph.
Chance
T-storms

Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming south southwest after midnight.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Showers
Likely
Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 81. Southeast wind 5 to 10 mph.
Chance
Showers then
Chance
T-storms
Wednesday
Night
Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Mostly cloudy, with a low around 68. Southeast wind around 5 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
Thursday

Thursday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 84. Southeast wind around 5 mph becoming northwest in the afternoon.
Chance
T-storms

Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 70. East southeast wind around 5 mph.
Slight Chance
T-storms

Friday

Friday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. South southwest wind around 5 mph.
Slight Chance
T-storms

Lo 68 °F Hi 85 °F Lo 69 °F Hi 81 °F Lo 68 °F Hi 84 °F Lo 70 °F Hi 88 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.