Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 210; Flight Crew Total 23000; Flight Crew Type 1000
Distraction; Situational Awareness; Confusion
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Environment - Non Weather Related; Company Policy
As I was pre-flighting the aircraft before the passengers were boarding; I noticed that ALL of the cleaners onboard the aircraft did not have a mask on around their nose and mouth.  Most of the cleaners had their mask only around their chin; some didn't have any mask on.  This is a federal mandate; and a company requirement to wear a mask; yet the rule is not being followed.  There's no enforcement.  Plus; there was no air connected to the aircraft; so there was stagnant air.  This was an unsafe environment.  I see this on just about every flight; which is 1-4 legs/day.  I'm also seeing at least 20% of the passengers in the boarding area or walking in the concourse not wearing any mask; and some are just wearing the mask around their mouth only.  There is no enforcement.  I'm seeing this at every airport I've been to in the domestic system.  This Federal Mask Mandate is a complete joke.  Airports are not safe if 20%+ of the passengers are not wearing masks.  These people are not drinking or eating; so there's no reason why they are not wearing a mask.
Air carrier Captain reported observing a cleaning crew onboard an aircraft not wearing face masks correctly.  Pilot also reported people in terminal not wearing face masks correctly.