The ideal question is one that will yield the most relevant and reliable information with the least expense and effort. If higher day time temperatures can provide that energy than on days with higher day time temperatures there should be higher levels of ground-level ozone. Notice that this is in the form of a statement. To avoid designing experiments around uncertain or vague research questions, continue to gather as much information as possible, Background Information as a part of this guided research. This is usually is accomplished through library research by consulting the card catalog and any available journals or abstracts in the field of interest.
Internet searches are also valuable but as always, evaluate the source of the information.
Anyone who does not bother to review previous literature runs the risk of needlessly duplicating effort or mistakes. After you have done your information search you should revisit your research question and determine if changes need to be made.