Map Filter Collapse
Select Date
icon-calendar
Overlays
MSSModerate Haze MSSDense Haze MSS 2500 ft Wind MSSLow Confidence Hotspot MSSMedium Confidence Hotspot MSSHigh Confidence Hotspot

MSS Wind Speed (km/h) MSS Rainfall (mm)

Latest Weather and Haze Situation

Dry weather persisted over most parts of the Mekong sub-region today, except over the southeastern parts of the sub-region where isolated showers were observed. Clusters of scattered to widespread hotspots were detected in Cambodia and Myanmar, while isolated hotspots were detected elsewhere in the Mekong sub- region. Moderate to dense smoke plumes were observed to emanate from hotspot clusters detected in northern Cambodia, parts of northern and southern Lao PDR, as well as parts of central Myanmar. Moderate to dense smoke plumes over the western parts of Cambodia and central parts of Thailand were also observed to drift westwards into the central parts of Thailand and southern parts of Myanmar respectively. Slight to moderate smoke haze was observed over northern and southern parts of Myanmar. Most air quality stations in the northern and central parts of the Mekong sub-region reported Moderate to Unhealthy levels. However, due to cloud cover, the full extent of hotspots and smoke haze situation in the eastern, central and southern parts of the Mekong sub-region could not be fully determined.

Over the southern ASEAN region, isolated showers were observed today, except over Peninsular Malaysia where it was relatively drier. Few hotspots were detected mainly in northern Sumatra. From the satellite imagery, slight localised smoke plume was observed to emanate from a hotspot in northern Sumatra.

Weather and Haze Outlook

Over the next few days, dry conditions are expected to persist over most of the Mekong sub-region, except over the eastern coast of Viet Nam where isolated showers are forecast. The hotspot and smoke haze situation may escalate further over fire-prone areas experiencing prolonged dry conditions, with an increased risk of transboundary haze occurrence. The prevailing winds over the northern ASEAN region are expected to blow from northeast to east, except over the northern and western parts of the Mekong sub-region where winds are light and variable in direction.

Meanwhile, showers are expected to continue over the southern ASEAN region, except over Peninsular Malaysia and parts of central Sumatra where drier conditions are forecast. The overall hotspot activity in the region is expected to remain low, but few to isolated hotspots and localised smoke plumes may occur in areas experiencing drier conditions. The prevailing winds over this region are forecast to blow from west to northwest.

  • All maps are to be used solely for displaying meteorological/geophysical information, and not for any other purpose. All maps are not to scale and for illustrative purpose only.
  • The hotspots depicted on the map are derived from the NOAA satellite and they represent locations with possible fires. Hotspots may go undetected due to cloudy conditions or incomplete satellite pass.
  • At Alert Level 0 and Alert Level 1, the regional haze situation is updated once a day at 0900 UTC. The regional haze situation is updated more frequently at 0300 UTC and 0900 UTC upon activation of Alert Level 2 or Alert Level 3. Updates at 0300 UTC display hotspot information from night-time passes of the NOAA-20 satellite. Fewer hotspots were typically detected at night as fire activities usually peak during the day.
  • Reprocessed satellite data will be availed at a later timing. The hotspot information derived from satellite data reprocessed may differ slightly from that received near real-time but reprocessing is necessary for better quality data.
  • The 2500 ft winds (depicted by arrows) are model analysis winds.