NYC's Air Quality Slowly Improving Amid Environmental Concerns.

New York City's air quality has improved to "moderate" levels for the first time in days due to the clearing of the thick orange haze caused by the Canadian wildfires. However, the air could still cause health impacts to those who are "unusually sensitive to particle pollution." The New York City Department of Health has advised people with heart or breathing problems, as well as older adults, to limit their time outdoors. The air quality is expected to improve over the weekend, but the situation could be a "long-duration event." Millions of Americans are still facing dangerously bad air quality, as hundreds of wildfires burn in Canada.