If you are in Bangkok, you will still see a lot of Thai’s wearing facemasks.
This is not so much about covid, although still a risk, but more about air pollution and the high PM 2/5 levels.
The government reported over 1.3 million Thai’s were sickened last year due to the air pollution.
Having an air quality app and monitoring the PM 2.5 levels before you venture out in Bangkok is a smart thing.
If the levels are in the danger zones, protect yourself and wear a mask.