{"id":88599,"date":"2026-09-28T20:50:02","date_gmt":"2026-09-28T12:50:02","guid":{"rendered":"https:\/\/sgbuzz.com\/?p=88599"},"modified":"2026-09-28T20:50:02","modified_gmt":"2026-09-28T12:50:02","slug":"air-quality-in-two-singapore-regions-enters-unhealthy-range","status":"publish","type":"post","link":"https:\/\/sgbuzz.com\/?p=88599","title":{"rendered":"Air quality in two Singapore regions enters unhealthy range"},"content":{"rendered":"<p><br \/>\n<\/p>\n<div>\n<p>The 24-hour PSI is Singapore&#8217;s indicator of daily\u00a0<a href=\"https:\/\/www.channelnewsasia.com\/singapore\/haze-101-singapore-psi-reading-meanings-1316026\" target=\"_blank\" rel=\"noopener\">air quality<\/a>\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-central-south-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":88600,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[2611],"tags":[],"class_list":["post-88599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buzz-headlines","wpcat-2611-id"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/88599","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=88599"}],"version-history":[{"count":0,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/88599\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/media\/88600"}],"wp:attachment":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}