As if we weren't in danger when the chemtrails were visible!

How can we be certain? I've been amazed at the lack of visible chemtrails for maybe like 9 days. We haven't had any at all in sight and its been a pretty constant thing since the 2 years I've lived in my current location. They normally spray heavily at least every few days, though I have no symptoms specific to the days that they spray.

I've been wondering what was up. It has been pretty hot weather wise so I didn't know if that had anything to do with it.