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Science3 publishersIndependently confirmed3 min readPublished

Haze shuts schools across Kuala Lumpur, Putrajaya and four Malaysian states

Malaysia shut schools in Kuala Lumpur, Putrajaya and four states on Oct 9 as haze drove air quality to unhealthy levels. How much warning families get next time depends on which of the education ministry's two pollutant-index triggers is crossed.

The Scientist · Science desk

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Photograph accompanying Haze shuts schools across Kuala Lumpur, Putrajaya and four Malaysian states
Photo: channelnewsasia.com

What happened

  • The education ministry requires schools to close when the Air Pollutant Index exceeds 180, or stays above 150 for three consecutive days.
  • AFP reported that the haze comes from peatland and forest fires in Indonesia and has covered cities across the region for more than a month.
  • Johor was the first peninsular state to close schools this haze season, shutting all of them for two days from Thursday.
  • Closed schools must switch to home-based learning, and teachers and support staff are allowed to work from home during the closure.
  • Prime Minister Anwar Ibrahim asked his foreign minister to seek an urgent meeting of ASEAN environment ministers on the haze.

Compiled by The ScientistSomething wrong?How this is made

Why it matters

  • contradiction Read as AFP reported it, the king's guidance would close schools at the first reading of 150, sooner than the ministry's rule requires; that rule needs three days at that level.
  • constraint A week of readings in the 150s would keep schools closed under the three-day rule without any single reading reaching the very unhealthy tier.
  • cost Working parents absorb the childcare for every closure day, a cost Johor's state government acknowledged when it shut all its schools.

Both of the ministry's closure triggers sit inside the band that Malaysian guidelines label "unhealthy." Under those guidelines, Air Pollutant Index readings above 100 count as unhealthy, above 200 as very unhealthy and above 300 as hazardous [6]. A reading beyond 500 is the threshold for declaring a local emergency [6]. Neither 150 nor 180 reaches the very unhealthy tier [27]. On Friday morning, government data showed 37 areas at unhealthy levels [23].

Kuala Lumpur's reading on Friday was around 170 [12]. That is 10 points under the single-reading trigger and 20 above the persistence one [28]. On the rule as reported, the capital's closure rests on three straight days above 150, or on the king's guidance [28]. AFP reported only that the city stayed at "unhealthy levels" through the week [13], a label that covers every reading from 101 to 200 [6]. The reports do not include Kuala Lumpur's readings for the days before Friday.

The two arms give different amounts of warning. A closure under the three-day arm comes after at least two consecutive days above 150 that parents can follow in the official updates [29]. The 180 arm needs only one reading [10]. In Johor's Batu Pahat district, about 300 educational institutions closed on Wednesday after readings there reached the very unhealthy range [15], a day before the statewide shutdown began [14]. Negeri Sembilan's order rested on readings taken at 5pm on Oct 8 in Seremban, Port Dickson and Nilai, for closures starting the next day [26]. Nationally, the minister announced on Thursday the closures that took effect on Friday [24]. "In the future, we will ensure that any decision to close schools is notified in advance so that parents have sufficient time to prepare," Fadhlina said [4].

The king's guidance appears in two forms. AFP wrote that Sultan Ibrahim said schools should close when readings reach 150 or higher [5]. The ministry's director-general, Mohd Azam Ahmad, said officials had heeded the king's advice to close schools particularly where readings stay between 150 and 180 for prolonged periods [11]. The ministry's rule, with its three-day clause, matches that second account [10][11]. "The ministry expresses its appreciation for the concern and decree of His Majesty regarding the safety and health of students following the haze affecting the country," Mohd Azam said [22].

IQAir's ranking needs a caution about scales. The Swiss-based monitor put Kuala Lumpur second among the world's most polluted cities on Friday morning, behind Singapore [19], where its Air Quality Index read 205, in the very unhealthy range [20]. That index calls readings above 150 unhealthy [21]; Malaysia's API applies the same label above 100 [6]. Singapore's 205 and Kuala Lumpur's 170 come from different scales and cannot be compared directly [30].

"The state government understands that the closure could affect parents and guardians who still had to work," said Muhammad Naqib Md Ghazali, who chairs Johor's education and information committee [17]. Johor has postponed assessments scheduled during its closure [16]. Outdoor events have also moved. The Ministry of Youth and Sports postponed Saturday's National Sports Day celebrations in seven states and federal territories, and said new dates would be "subject to air quality returning to safe levels for outdoor activities" [25].

"The haze issue is indeed at a worrying level. And I have personally contacted President Prabowo," Prime Minister Anwar Ibrahim said on Thursday, referring to Indonesia's leader, Prabowo Subianto [7]. He said Malaysia has stepped up attempts to trigger rain through cloud seeding [9].

What to watch

  • Whether the next closure notice arrives two or more days ahead, as the three-day rule allows, or overnight again.
  • Whether ASEAN environment ministers meet as Anwar requested, and what Indonesia commits to on the fires.
  • Whether Kuala Lumpur's readings pass 180, the level at which a single reading closes schools under the ministry's rule.

Clarity's read

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Reality

Evidence72
Adoption
Insufficient
Hype gap0
Incentives
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Confidence70

Perspective Coverage

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  1. [1]

    Education Minister Fadhlina Sidek said in a Facebook post on Thursday that schools in Johor, Melaka, Negeri Sembilan, Selangor, Kuala Lumpur and Putrajaya were closed on Friday (Oct 9) as worsening haze pushed air quality to unhealthy levels.

    ReportedSupportedSource: Channel NewsAsia, citing Fadhlina Sidek4 sources— create a free account to open themView cited source
  2. [2]

    Fadhlina Sidek said she ordered full school closures in four states and two federal territories, as well as one partial closure in Pahang.

    ReportedSupportedSource: AFP via phys.org4 sources— create a free account to open themView cited source
  3. [3]

    Haze from peatland and forest fires in neighbouring Indonesia has shrouded cities in the region for more than a month.

    ReportedSupportedSource: AFP via phys.org3 sources— create a free account to open themView cited source

Sources

3 independent publishers whose own reporting we read for this story.

  1. channelnewsasia.com

    1 article · October 8, 2026

    Sweeping school closures across Malaysia as haze worsens
  2. gulfnews.com

    1 article · October 8, 2026

    Malaysia Shuts Schools Amid Toxic Haze from Indonesian Fires
  3. phys.org

    1 article · October 9, 2026

    Malaysia closes schools in capital, parts of country due to haze
  4. straitstimes.com

    1 article · October 8, 2026

    Schools close in Negeri Sembilan, Melaka and Selangor

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