{"id":4636,"date":"2026-03-26T14:38:48","date_gmt":"2026-03-26T11:38:48","guid":{"rendered":"https:\/\/www.acccflagship.fi\/?p=4636"},"modified":"2026-03-26T14:38:50","modified_gmt":"2026-03-26T11:38:50","slug":"katupolykausi-on-kaynnissa-ilmanlaatu-heikentynyt-monin-paikoin","status":"publish","type":"post","link":"https:\/\/www.acccflagship.fi\/index.php\/2026\/03\/26\/katupolykausi-on-kaynnissa-ilmanlaatu-heikentynyt-monin-paikoin\/","title":{"rendered":"Katup\u00f6lykausi on k\u00e4ynniss\u00e4 \u2013 ilmanlaatu heikentynyt monin paikoin"},"content":{"rendered":"\n

Ilmanlaatu on ollut Suomessa viimeisen viikon ajan monin paikoin v\u00e4ltt\u00e4v\u00e4 tai huono, hetkitt\u00e4in jopa eritt\u00e4in huono. Ilmanlaadun heikentyminen johtuu p\u00e4\u00e4osin katup\u00f6lyst\u00e4.<\/strong><\/p>\n\n\n\n

Kev\u00e4\u00e4n eteneminen ja aurinkoinen, kuiva s\u00e4\u00e4 on tuonut mukanaan jokavuotisen katup\u00f6lykauden. Viikonloppuna korkeita katup\u00f6lypitoisuuksia mitattiin laajalti Etel\u00e4- ja Keski-Suomen kaupungeissa etenkin vilkkaiden teiden l\u00e4heisyydess\u00e4. Ilmanlaatu oli monin paikoin v\u00e4ltt\u00e4v\u00e4, ajoittain my\u00f6s eritt\u00e4in huono.<\/p>\n\n\n\n

“Perjantai-iltana mitattiin vuoden korkeimmat katup\u00f6lypitoisuudet, ja katup\u00f6ly heikent\u00e4\u00e4 ilmanlaatua monin paikoin my\u00f6s alkavalla viikolla”, sanoo tutkija Katriina Kyll\u00f6nen<\/strong> Ilmatieteen laitokselta.<\/p>\n\n\n\n

Pahin tilanne on tyypillisesti ruuhka-aikoina vilkkaasti liikenn\u00f6idyill\u00e4 katuosuuksilla. Ilmanlaatu voi parantua nopeasti, kun siirryt\u00e4\u00e4n kauemmas p\u00f6ly\u00e4v\u00e4st\u00e4 kadusta tai v\u00e4yl\u00e4st\u00e4; esimerkiksi hiljaisemmilla sivukaduilla ilma on puhtaampaa.<\/p>\n\n\n\n

Yleisesti p\u00f6lytilanne helpottuu katujen puhdistuksen edetess\u00e4 sek\u00e4 sateiden puhdistaessa ilmaa. Poutainen, kuiva ja tuulinen s\u00e4\u00e4 pahentaa katup\u00f6lytilannetta, sateet puolestaan puhdistavat ilmaa tehokkaasti.<\/p>\n\n\n\n

Lue koko tiedote ilmatieteen laitoksen sivuilta<\/a>.<\/p>\n\n\n\n

Lue uutinen Ylen sivuilta.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ilmanlaatu on ollut Suomessa viimeisen viikon ajan monin paikoin v\u00e4ltt\u00e4v\u00e4 tai huono, hetkitt\u00e4in jopa eritt\u00e4in huono. Ilmanlaadun heikentyminen johtuu p\u00e4\u00e4osin katup\u00f6lyst\u00e4. Kev\u00e4\u00e4n eteneminen ja aurinkoinen, kuiva s\u00e4\u00e4 on tuonut mukanaan jokavuotisen katup\u00f6lykauden. Viikonloppuna korkeita katup\u00f6lypitoisuuksia mitattiin laajalti Etel\u00e4- ja Keski-Suomen kaupungeissa etenkin vilkkaiden teiden l\u00e4heisyydess\u00e4. Ilmanlaatu oli monin paikoin v\u00e4ltt\u00e4v\u00e4, ajoittain my\u00f6s eritt\u00e4in huono. “Perjantai-iltana […]<\/p>\n","protected":false},"author":1,"featured_media":2541,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_vp_format_video_url":"","_vp_image_focal_point":{"x":0.5,"y":0.5500000000000000444089209850062616169452667236328125},"footnotes":""},"categories":[140,25],"tags":[55],"class_list":["post-4636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-impact-en","category-uncategorized-en","tag-accc"],"featured_image_src":"https:\/\/www.acccflagship.fi\/wp-content\/uploads\/ACCC-news-1.png","author_info":{"display_name":"mkulmala","author_link":"https:\/\/www.acccflagship.fi\/index.php\/author\/mkulmala\/"},"_links":{"self":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/comments?post=4636"}],"version-history":[{"count":1,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4636\/revisions"}],"predecessor-version":[{"id":4637,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4636\/revisions\/4637"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media\/2541"}],"wp:attachment":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media?parent=4636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/categories?post=4636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/tags?post=4636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}