WEBVTT 00:01.067 --> 00:03.403 align:left position:20% line:83% size:70% GEOFF BENNETT: Welcome to the "NewsHour." 00:03.403 --> 00:08.908 align:left position:10% line:77% size:80% A heavy pall of polluted air still blankets much of the Eastern U.S. tonight. It may 00:08.908 --> 00:14.381 align:left position:10% line:77% size:80% not dissipate for days, as fires in Canada send vast curtains of smoke drifting south. 00:14.381 --> 00:19.285 align:left position:10% line:71% size:80% AMNA NAWAZ: The bad air has officials warning, in effect, that breathing can be hazardous to 00:19.285 --> 00:22.789 align:left position:20% line:71% size:70% your health. It's also scrambling schedules, from airports to schools to the White House. 00:22.789 --> 00:26.026 align:left position:10% line:89% size:80% Stephanie Sy has our report. 00:26.026 --> 00:32.332 align:left position:10% line:77% size:80% STEPHANIE SY: A huge swathe of the country spent another day shrouded in haze. This morning, 00:32.332 --> 00:36.202 align:left position:10% line:83% size:80% smoke still obscured parts of the Manhattan skyline. 00:36.202 --> 00:39.072 align:left position:20% line:77% size:70% JOHN CHAN, New York City Resident: The smoke obliterated the island yesterday. So, 00:39.072 --> 00:46.846 align:left position:10% line:77% size:80% it is obviously not a passing phase of wind changes, but it's serious pollution in the air. 00:46.846 --> 00:52.919 align:left position:10% line:77% size:80% STEPHANIE SY: As hundreds of wildfires rage out of control in Canada, winds have carried the 00:52.919 --> 00:58.658 align:left position:10% line:77% size:80% smoke farther south, all the way to Raleigh, North Carolina, which woke up to hazy skies. 00:58.658 --> 01:02.595 align:left position:10% line:77% size:80% And in the nation's capital, a blanket of smoke lay over the White House, 01:02.595 --> 01:05.965 align:left position:20% line:83% size:70% blurring the Washington Monument in the distance. 01:05.965 --> 01:09.669 align:left position:10% line:77% size:80% White House officials postponed today's outdoor Pride celebration until Saturday. 01:12.439 --> 01:17.977 align:left position:10% line:77% size:80% Millions of people were under hazardous air quality advisory today from the Northeast 01:17.977 --> 01:23.316 align:left position:10% line:77% size:80% to the South and parts of the Midwest. Authorities advised people to stay indoors, 01:23.316 --> 01:26.653 align:left position:10% line:77% size:80% especially young children, the elderly, and those with respiratory issues. 01:30.490 --> 01:36.863 align:left position:20% line:77% size:70% Allergy and immunology specialist Dr. Purvi Parikh described the health risks. 01:36.863 --> 01:40.300 align:left position:10% line:71% size:80% DR. PURVI PARIKH, Allergy and Asthma Network: Wildfire smoke has particulate matter. It's very, 01:40.300 --> 01:46.005 align:left position:10% line:77% size:80% very small. And that small particulate matter can really get lodged deep into your lungs. 01:46.005 --> 01:50.844 align:left position:10% line:77% size:80% So it can cause a lot more lung damage in the short term and long term. And in addition to 01:50.844 --> 01:57.550 align:left position:10% line:77% size:80% these particles, wildfire smoke has a variety of gases too that can be harmful to breathe in. 01:57.550 --> 02:02.322 align:left position:10% line:77% size:80% STEPHANIE SY: New York state is making a million N95 masks available to the public, 02:02.322 --> 02:06.059 align:left position:20% line:83% size:70% including 400,000 for New York City. 02:06.059 --> 02:11.331 align:left position:10% line:77% size:80% MAN: Just want to make sure that we are being a safe as we can to protect our health. 02:11.331 --> 02:16.202 align:left position:10% line:77% size:80% STEPHANIE SY: The city's mayor, Eric Adams, has gone door to door 02:16.202 --> 02:21.107 align:left position:10% line:77% size:80% disturbing masks to residents. He says the worst of the air may be behind the city. 02:21.107 --> 02:23.576 align:left position:10% line:77% size:80% ERIC ADAMS (D), Mayor of New York: The smoke models are not indicating 02:23.576 --> 02:28.114 align:left position:10% line:77% size:80% another large plume over the city, so there is a chance for significant 02:28.114 --> 02:31.918 align:left position:10% line:83% size:80% improvement by tomorrow morning and throughout the day tomorrow. 02:31.918 --> 02:35.488 align:left position:10% line:77% size:80% STEPHANIE SY: Even so, New York City announced public schools will teach remotely tomorrow. 02:38.024 --> 02:42.962 align:left position:10% line:77% size:80% Meantime, poor visibility prompted the Federal Aviation Administration to cancel 02:42.962 --> 02:46.533 align:left position:10% line:77% size:80% or delay flights into New York area airports and Philadelphia's international airport. 02:48.935 --> 02:53.806 align:left position:10% line:77% size:80% The dangerous air quality also canceled or postponed more sporting events, 02:53.806 --> 02:57.243 align:left position:10% line:77% size:80% from racing at Belmont Park in New York to the Washington Nationals' home baseball game. 02:59.579 --> 03:03.583 align:left position:10% line:83% size:80% New Jersey Governor Phil Murphy says the harmful impact of the 03:03.583 --> 03:07.654 align:left position:10% line:77% size:80% fires is further proof we must do more to tackle the climate crisis. 03:07.654 --> 03:10.657 align:left position:10% line:77% size:80% GOV. PHIL MURPHY (D-NJ): Climate change is here. And, unfortunately, 03:10.657 --> 03:17.096 align:left position:10% line:71% size:80% this is our reality. That disturbing orange haze in the sky, the smell of smoke and that burning 03:17.096 --> 03:21.901 align:left position:10% line:77% size:80% in our throats, those are clear warning signs that the status quo cannot continue. 03:21.901 --> 03:27.307 align:left position:10% line:77% size:80% STEPHANIE SY: Paul Ullrich, a professor of regional climate modeling at U.C. Davis, agrees. 03:27.307 --> 03:30.510 align:left position:10% line:71% size:80% PAUL ULLRICH, University of California, Davis: We are experiencing warmer conditions and more 03:30.510 --> 03:37.717 align:left position:10% line:71% size:80% extremes every year. We have some manifestation of that, whether it be an extreme tropical cyclone, 03:37.717 --> 03:44.224 align:left position:10% line:77% size:80% an extreme wildfire, tornado outbreaks or other forms of extreme weather. 03:44.224 --> 03:50.263 align:left position:10% line:71% size:80% So the evidence is continuing to pile up that we are having a clear impact on the climate system, 03:50.263 --> 03:53.166 align:left position:10% line:77% size:80% and, as a consequence, the climate system is having an impact on us. 03:53.166 --> 03:57.904 align:left position:10% line:83% size:80% STEPHANIE SY: With more than 400 wildfires still burning 03:57.904 --> 04:03.309 align:left position:10% line:71% size:80% in Canada, forecasters worn the smoke could linger over the Eastern U.S. through the weekend. 04:03.309 --> 04:05.111 align:left position:20% line:83% size:70% For the "PBS NewsHour," I'm Stephanie Sy.