18 Apr 24 - around 07:00 #AirPollution #PM25 PM 2.5 #Smog season for Northern #Thailand. Here, near-surface measurements for the determination of AQI via aqicn.org > #ChiangMai - PURPLE-BROWN > #ChiangRai - RED-PURPLE > #MaeHongSong - RED->BROWN > VERY BAD DAY
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