\n<\/p>\n
Ms Fu urged people to check both the 24-hour PSI and 1-hour PM2.5 readings when planning outdoor activities, as the two indicators serve different purposes.<\/p>\n
The 24-hour PSI provides a picture of air quality over a longer period and is useful for assessing sustained exposure, while the 1-hour PM2.5 reading reflects more immediate conditions, which can change quickly.<\/p>\n
A low 24-hour PSI reading coupled with a high one-hour PM2.5 reading could indicate that air quality has recently worsened, even though the longer-term average has yet to rise, she explained.<\/p>\n
This was what happened on Oct 14, when 1-hour PM2.5 readings spiked, particularly in western Singapore.<\/p>\n
Ms Fu advised Singaporeans to refer to the 24-hour PSI forecast when planning activities for the following day, before checking the latest 1-hour PM2.5 readings in their area just before proceeding.<\/p>\n
Citing the example of a group run, she said participants could go ahead with their plans if the forecast allowed for strenuous outdoor activity, but should check the 1-hour PM2.5 reading before setting off.<\/p>\n
If air quality has deteriorated and PM2.5 readings have risen into a higher band, they should cancel the run, she said.<\/p>\n
Ms Fu added that she has asked the National Environment Agency (NEA) to make the information clearer on its website and app to help Singaporeans plan their activities.<\/p>\n
She also urged the public to consider the nature and duration of their activities, prevailing air quality and their own health conditions when deciding whether to proceed.<\/p>\n<\/div>\n
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CHECK BOTH PSI AND PM2.5 READINGS Ms Fu urged people to check both the 24-hour PSI and 1-hour PM2.5 readings when planning outdoor activities, as…<\/p>\n","protected":false},"author":1,"featured_media":93558,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/dam.mediacorp.sg\/image\/upload\/s--ivYw-dJd--\/c_crop,h_1125,w_2000,x_0,y_451\/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\/10\/16\/_wal3001.jpg?itok=3eS5FYdN","fifu_image_alt":"","footnotes":""},"categories":[2],"tags":[7766,2608,8545,31802,19324,5401,17884,12876,1656,29441,5111,19604],"class_list":["post-93557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buzz-news-sg-global","tag-deployed","tag-fully","tag-grace","tag-hazardous","tag-haze","tag-levels","tag-machines","tag-mask","tag-oct","tag-psi","tag-reach","tag-vending","wpcat-2-id"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/93557","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=93557"}],"version-history":[{"count":0,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/posts\/93557\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=\/wp\/v2\/media\/93558"}],"wp:attachment":[{"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sgbuzz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}