I was out for errands,heading south on hwy 249 from northpointe region. i was approaching the intersection of 249/frontage rd and spring-cypress rd when i noticed something black in the sky heading on a straight path to the north. i thought it was a traffic helicopter-they are over the highways often.The light had changed and traffic was starting to move..So i was unable to get a perfect view at that point. the object banked to the ne a bit,and that is when i realized it was not a helicopter; there was no tail or blades, just a round dark ball.I saw as it turned that it was a blue-green color also. i tried to keep an eye on it as i passed through the intersection, changed lanes to pull into the ross shopping center at that corner.By the time i got into the lot and parked,it was totally out of sight. (1) day was sunny, beautiful and mostly clear,some fluffy clouding here and there.Attaching photo i took from lowe's in tomball(not the actual location of sighting) to show the sky conditions. (2) checked weather and the winds were at 9mph and visibility 11 miles. (3) felt upset i was unable to get a photo or video of the object.