That’s true. I remember during start of Covid lockdown we had a curfew for a few weeks yet the pollution was at 250-300. Mostly because of home heating. It’s w

That’s true. I remember during start of Covid lockdown we had a curfew for a few weeks yet the pollution was at 250-300. Mostly because of home heating. It’s well known at this point, it’s always polluted in the winter yet summers are “fine”.