Guides
Plain explanations of the air Kabut measures: where the haze comes from, what the numbers mean, and what helps.
Indonesia's haze season, explained
Most years, smoke from fires in Sumatra and Kalimantan reaches cities hundreds of kilometres away. When it happens, why, and how to read it on Kabut.
What PM2.5 is and why it matters
PM2.5 is the fine dust in smoke and traffic fumes, and the number Kabut's air quality reading is built on. Here is what it is and how to read it.
Masks for haze: N95, surgical or cloth?
Haze smoke is mostly PM2.5, particles small enough that only a fitted respirator stops most of them. Here is which mask is worth wearing, and when.
Keeping indoor air cleaner during haze
Most people spend most of a haze day indoors, so the air inside matters more than any mask. A few habits and one filter can make a large difference.
Why peat fires are so hard to put out
Most of Indonesia's worst haze comes from burning peat, which smoulders underground for weeks. Why it smokes so much, and why water from above rarely stops it.
ISPU and US AQI: why there are two numbers
Indonesian city pages on Kabut show two indices for the same air. Here is why they differ, and which one the advice follows.
Volcanic ash and your health
Volcanic ash is not smoke: it is crushed rock and glass, and it needs different care. Here is what it does, how to protect yourself, and how Kabut reports it.