It's official: US air quality got worse in 2023
The annual World Air Quality Report by IQAir, a Swiss air quality technology company, showed that U.S. residents enjoyed cleaner air in 2023 than 75 percent of the 134 countries and territories measured. The report found that most of the US had almost double the level of air pollution deemed acceptable by the World Health Organization. Smoke from Canadian wildfires was behind many of these spikes.