{"id":88609,"date":"2026-09-28T21:41:58","date_gmt":"2026-09-28T13:41:58","guid":{"rendered":"https:\/\/sgbuzz.com\/?p=88609"},"modified":"2026-09-28T21:41:58","modified_gmt":"2026-09-28T13:41:58","slug":"air-quality-in-three-singapore-regions-in-unhealthy-range","status":"publish","type":"post","link":"https:\/\/sgbuzz.com\/?p=88609","title":{"rendered":"Air quality in three Singapore regions in unhealthy range"},"content":{"rendered":"<p><br \/>\n<\/p>\n<div>\n<p>The 24-hour PSI is Singapore&#8217;s indicator of daily\u00a0air quality\u00a0and forms the basis of NEA&#8217;s daily health advisories. It is calculated using six air pollutants &#8211; PM2.5, PM10, ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide.\u00a0<\/p>\n<p>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<p>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<p><span>A 24-hour PSI reading is considered &#8220;unhealthy&#8221; when it is in the 101 to 200 range, &#8220;very unhealthy&#8221; when it is within the 201-300 range, and &#8220;hazardous&#8221; when it goes over 300.<\/span><\/p>\n<\/div>\n<p><br \/>\n<center><br \/>\n<br \/><a href=\"https:\/\/www.channelnewsasia.com\/singapore\/air-quality-haze-unhealthy-regions-sep-28-6413481\" target=\"_blank\" rel=\"noopener\">Read Full Article At Source <\/a><br \/>\n<center\/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The 24-hour PSI is Singapore&#8217;s indicator of daily\u00a0air quality\u00a0and forms the basis of NEA&#8217;s daily health advisories. It is calculated using six air pollutants &#8211;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":88610,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/dam.mediacorp.sg\/image\/upload\/s---jg0_4kr--\/c_crop,h_1124,w_1998,x_0,y_63\/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\/14\/109696.jpg?itok=KD4bkMV6","fifu_image_alt":"","footnotes":""},"categories":[2],"tags":[364,4001,3974,4008,22,11178],"class_list":["post-88609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buzz-news-sg-global","tag-air","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\/88609","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=88609"}],"version-history":[{"count":0,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/88609\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/media\/88610"}],"wp:attachment":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}