Yep, those are chemtrails.
i've noticed that they use different patterns to cover the sky.
They always used to be like tic tac toe, crosshatched at right angles,
then earlier this year i started to notice a radiant pattern, where the chemtrailers all came from the same point on the horizon at different angles, like rays from the sun.
The other day i noticed a new design, sort of narrowing parallel trails, alternating from North to South.
These seem to be three different methods employed, to cloud the sky 100 percent.
i think they are trying to maintain a plasma layer in the atmosphere, so they can control the weather with radio-waves and ionizing lasers.