Static level on HF bands????

Hi all,

Just a question for those who are reading this blog (I hope there are a few of you that find it interesting...)
I've noticed a high level of static noise on most of the HF bands, increasing slightly in the evening time during the sunset, up to S5-S6 here....(S3 during day-time).
It's almost impossible for me to find a "clear" band at the moment

 same effect on your side? Any root cause (Aurora...season changing, others)? Just as a complement, this static noise disappears couple of hours after complete sunset...

Thanks in advance !!!!!!!