You mean chemtrails are contrails but with different weather conditions such that the sun doesn't burn them up? I'm guessing you see more chemtrails in the morning and winter (if the sky is clear because mornings are on average less clear).
Maybe we see fewer of them because it's August.
I've seen contrails that didn't dissipate in the middle of August the last 2 years. I understand your reasoning but personal observations show MW different.
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