I have no idea what's going on - normally these few weeks around the end of December are clear, crisp, cool and dry - with Thais wearing full-on winter wear as the temp creeps down to 22. However, beginning yesterday we've been covered with a very, very heavy haze, and it is quite warm.
Visibility is ~ 2 Km.
BANGKOK TO HAVE ITSELF A SMOGGY LITTLE CHRISTMAS?
BANGKOK — You better not run; you better not hike; you better not breathe, we’re telling you why – nasty smog has come to town.
It’s time to break out the masks again as heavy smog has returned to the capital just before the long Christmas and New Year’s holidays begin.
As of 10am Friday, Bangkok’s air pollution rose to 184 on an independent international index, a level considered “ unhealthy.” The high levels of ultrafine particles mean active children and adults and people with respiratory diseases are advised to avoid exerting themselves outdoors.
Bangkok to Have Itself a Smoggy Little Christmas?
Seems a bit better today (Saturday).
https://aqicn.org/city/bangkok/
Dangerous haze to linger for 'few days'
https://www.bangkokpost.com/news/general/1598758/dangerous-haze-to-linger-for-few-days