Health warnings were issued on Saturday as the northern province of Lampang entered a second week contending with heavy smog from agricultural burning that has generated an excess of particulate matter smaller than 2.5 microns (PM2.5).
The Pollution Control Department reported on Saturday that average PM2.5 levels in Lampang were between 87 and 135 microgrammes per cubic metre, exceeding dangerous levels for a 13th consecutive day. The Air Quality Index reading on Saturday afternoon was 174 — any reading above 150 is unhealthy for everyone.
