Malaysia haze watch
Every day on which a Malaysian state or territory reached AQI 101 or above — the point at which health advice stops saying “fine” and starts naming who should stay indoors. Each bulletin is built from our own hourly archive of station readings, so it records what the monitors read rather than restating someone else’s headline.
14 days on record
Most recent first.
- 157Wednesday, 28 October 2026Worst in Johor · 6 regions at 101+
- 173Tuesday, 27 October 2026Worst in Sarawak · 6 regions at 101+
- 174Monday, 26 October 2026Worst in Sarawak · 6 regions at 101+
- 238Sunday, 25 October 2026Worst in Sarawak · 11 regions at 101+
- 251Saturday, 24 October 2026Worst in Sarawak · 12 regions at 101+
- 356Friday, 23 October 2026Worst in Johor · 10 regions at 101+
- 500Thursday, 22 October 2026Worst in Kuala Lumpur · 10 regions at 101+
- 195Wednesday, 21 October 2026Worst in Selangor · 11 regions at 101+
- 215Tuesday, 20 October 2026Worst in Selangor · 12 regions at 101+
- 223Monday, 19 October 2026Worst in Kuala Lumpur · 12 regions at 101+
- 204Sunday, 18 October 2026Worst in Johor · 11 regions at 101+
- 289Saturday, 17 October 2026Worst in Johor · 10 regions at 101+
- 268Friday, 16 October 2026Worst in Johor · 11 regions at 101+
- 181Thursday, 15 October 2026Worst in Perak · 1 region at 101+
How these bulletins are made
Our own readings, not a news summary.
Every ten minutes we pull the readings published by monitoring stations across Malaysia and record, for each state and territory, the highest station reading in each hour. A bulletin is generated for any Malaysian day on which at least one region reached AQI 101, and it names the region, the station, the hour of the peak, and how many hours the region spent at or above the threshold.
The scale is the US EPA Air Quality Index as published by the World Air Quality Index project. It is not Malaysia’s official Air Pollutant Index — the Department of Environment’s API uses different breakpoints over different averaging windows, so the same air gives a different number. A bulletin here is a record of what these stations reported, not a declaration of an official haze episode.
Jerebu — haze — in Malaysia is usually a mix of local open burning and transboundary smoke from peat and forest fires in Sumatra and Kalimantan, and it most often builds during the southwest monsoon between June and September. Sarawak’s episodes frequently run on a different timetable from the peninsula’s, because its smoke comes from across the border in Kalimantan rather than across the Strait of Malacca.
Air quality by state
Live readings and trends for every state and territory.