{"id":44321,"date":"2025-07-06T21:22:08","date_gmt":"2025-07-06T21:22:08","guid":{"rendered":"https:\/\/www.europesays.com\/us\/44321\/"},"modified":"2025-07-06T21:22:08","modified_gmt":"2025-07-06T21:22:08","slug":"philly-air-quality-why-heat-waves-often-bring-ozone-alerts","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/44321\/","title":{"rendered":"Philly air quality: Why heat waves often bring ozone alerts"},"content":{"rendered":"<p>From Philly and the Pa. suburbs to South Jersey and Delaware, what would you like WHYY News to cover? <a href=\"#Section1\">Let us know!<\/a>\n<\/p>\n<p>The <a href=\"https:\/\/whyy.org\/articles\/philly-to-declare-code-red-for-heat-wave-starting-sunday\/\" target=\"_blank\" rel=\"noopener\">heatwave that brought 100-degree temperatures<\/a> to the Philadelphia region in June also brought <a href=\"https:\/\/x.com\/PHLPublicHealth\/status\/1937118890628194603&#039;\">warnings that the air quality was unhealthy<\/a> for sensitive groups.\n<\/p>\n<p>This was not a coincidence.\n<\/p>\n<p>Heat and sunlight are key ingredients in the reaction that creates ground-level ozone, a common air pollutant that can cause coughing, wheezing and more frequent asthma attacks.\n  <\/p>\n<p>Ozone is what\u2019s known as a secondary pollutant. It forms from other pollutants produced by sources such as cars, trucks and power plants.\n<\/p>\n<p>In an urban area like Philadelphia, the air already contains plenty of these precursor pollutants, said Kabindra Shakya, a professor at Villanova University who studies air quality.\n<\/p>\n<p>\u201cThey also need one other ingredient, which is the sunlight,\u201d Shakya said. \u201cWhen we see the high heat and the sun, then that actually drives more formation of the ozone.\u201d\n        <\/p>\n","protected":false},"excerpt":{"rendered":"From Philly and the Pa. suburbs to South Jersey and Delaware, what would you like WHYY News to&hellip;\n","protected":false},"author":3,"featured_media":44322,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5132],"tags":[12986,5229,2096,1448,2830,1311,67,586,132,5230,68,2969],"class_list":{"0":"post-44321","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-philadelphia","8":"tag-air-quality","9":"tag-america","10":"tag-heat","11":"tag-pa","12":"tag-pennsylvania","13":"tag-philadelphia","14":"tag-united-states","15":"tag-united-states-of-america","16":"tag-unitedstates","17":"tag-unitedstatesofamerica","18":"tag-us","19":"tag-usa"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/114808392496600519","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/44321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=44321"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/44321\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/44322"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=44321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=44321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=44321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}