Air quality affected by smoke from BC wildfiresAir quality affected by smoke from BC wildfires<div class="ExternalClassAE590B97237A4A1CBC31CF2EF6CC8F46"><p>Smoke from the B.C. wildfires resulted in poor air quality across Metro Vancouver this summer, with air quality advisories in effect for an unprecedented total of 22 days. </p><p>Air quality advisories were issued for 4 different periods in July, August and September when our region experienced high levels of fine particulate matter, primarily due to the smoke from wildfires burning outside the region, and ground level ozone. In our region, these pollutants have the greatest potential to be harmful to human health:</p><ul><li>Fine particulate matter can be emitted directly (primarily from fuel combustion and forest fires) or formed indirectly, such as when nitrogen oxides or sulphur oxides react with ammonia. </li><li>Ground-level ozone is one of the main constituents of smog. It is not emitted directly into the air, but is formed when nitrogen oxides and volatile organic compounds react in the presence of sunlight.</li></ul><p>We have been impacted by intense wildfire activity during three of the last four summers, with valuable lessons learned after the summers of 2015, 2017 and now 2018. Adjustments have been made to advisory procedures during each of these years, and public awareness and collaboration with other agencies has grown. </p><p>Our air quality programs should continue to adapt in response to wildfires, and Metro Vancouver will consider additional actions as it develops the <em>Climate 2050</em> regional climate action strategy and an updated air quality management plan.</p><p>Metro Vancouver operates a comprehensive network of 29 air quality monitoring stations from Horseshoe Bay to Hope, which collects air quality as well as meteorological data around the clock. Data are made available to the public in real time on Metro Vancouver’s own website at <a href="http://www.airmap.ca/" target="_blank"> airmap.ca</a>. </p></div>http://www.metrovancouver.org/metroupdate/PublishingImages/issue46-aq.jpg2018-09-28T07:00:00ZGP0|#1d957925-3125-4fc8-b07f-ef2367c1a312;L0|#01d957925-3125-4fc8-b07f-ef2367c1a312|Issue 46;GTSet|#d14ffe11-45dc-48fb-8684-ff109cf15a74<div class="ExternalClassEB0C9FF95A734A46A34D90369294B4B5"><p>​<span lang="EN-US">Smoke from the B.C. wildfires resulted in poor air quality across Metro Vancouver this summer, with air quality advisories in effect for an unprecedented total of 22 days. </span></p></div>0