{"id":82338,"date":"2026-09-05T07:25:00","date_gmt":"2026-09-04T23:25:00","guid":{"rendered":"https:\/\/sgbuzz.com\/?p=82338"},"modified":"2026-09-05T07:25:00","modified_gmt":"2026-09-04T23:25:00","slug":"haze-in-singapore-air-quality-at-unhealthy-range-in-two-regions","status":"publish","type":"post","link":"https:\/\/sgbuzz.com\/?p=82338","title":{"rendered":"Haze in Singapore: Air quality at unhealthy range in two regions"},"content":{"rendered":"


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The 24-hour PSI is Singapore’s indicator of daily air quality and forms the basis of NEA’s daily health advisories. It is calculated using six air pollutants – PM2.5, PM10, ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide.\u00a0<\/p>\n

The 1-hour PM2.5 reading, on the other hand, is the hourly average of the PM2.5 pollutant levels. PM2.5 is fine particulate matter with a diameter of 2.5 micrometres or shorter, and is the dominant pollutant during haze that causes harm to health.<\/p>\n

While the 24-hour PSI is an average of the past 24 hours, the one-hour PM2.5 reading reflects the air quality at a single point in time.<\/p>\n

A 24-hour PSI reading is considered “very unhealthy” when it is within the 201-300 range, and “hazardous” when it goes over 300.<\/p>\n

In an earlier joint media release issued on behalf of agencies in the Haze Task Force (HTF), NEA said those in the task force have implemented their respective action plans and advisories to protect public health and well-being.<\/span><\/p>\n

NEA’s daily haze advisories<\/span> will include the 24-hour PSI forecast, which can be used by the public to plan their activities and events for the next 24 hours.<\/p>\n<\/div>\n


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The 24-hour PSI is Singapore’s indicator of daily air quality and forms the basis of NEA’s daily health advisories. It is calculated using six air…<\/p>\n","protected":false},"author":1,"featured_media":82339,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/dam.mediacorp.sg\/image\/upload\/s--tk4MB2Ji--\/c_crop,h_1125,w_2000,x_0,y_238\/c_fill,g_auto,h_676,w_1200\/fl_relative,g_south_east,l_mediacorp:cna:watermark:2021-08:cna,w_0.1\/f_auto,q_auto\/v1\/mediacorp\/cna\/image\/2026\/09\/04\/59548.jpg?itok=3fmIqZmr","fifu_image_alt":"","footnotes":""},"categories":[2],"tags":[364,19324,4001,3974,4008,22,11178],"class_list":["post-82338","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buzz-news-sg-global","tag-air","tag-haze","tag-quality","tag-range","tag-regions","tag-singapore","tag-unhealthy","wpcat-2-id"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/82338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=82338"}],"version-history":[{"count":0,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/82338\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/media\/82339"}],"wp:attachment":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=82338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=82338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=82338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}