You may want to consider the following points as you plan your program:
We originally designed Smog Watch as a program that has three two-hour sessions with activities to do at home between sessions. Some program leaders who pilot tested the program found that this wasn't enough time to do justice to all of the activities, so you may want to think about extending the time for each session or increasing the number of sessions, or you might select only some of the activities. We also found that sometimes (but by no means always), families had trouble finding the time to do at-home activities or could have used some guidance for these activities. So you might want to rethink which activities participants do during sessions and which ones they do at home.
It may be best to run the Smog Watch program during the summer because that's when the most ozone is present, and the impact of the program is stronger when participants actually measure unhealthy concentrations. In some geographical areas, you could do the program during the school year, in September or in late spring. You may want to contact your regional EPA office or local meteorologist to determine when might be appropriate in your area.