Regarding air pollution, the US has some of the planets least polluted (pm2.5) air.
World Health Organization.
In the most recent WHO
report on air pollution, the United States was listed as one of the countries with the cleanest air in the world, significantly cleaner in fact than the air in Germany, Italy, Switzerland, the UK, Japan, Austria and France.
The report, which analyzed the “annual median concentration of particulate matter with an aerodynamic diameter of 2.5 μm or less (PM2.5) for both urban population and rural and urban population” found that the United States was one of the most pollution-free nations in the world.
The annual mean concentrations of particulate matter in the air range from less than 10 to over 100 µg/m3, the report states. At the very low end of the spectrum, the United States has a concentration of just 8, while China has a concentration more than seven times higher at 59, India at 66, Egypt at 101 and Saudi Arabia with the worst air pollution at 127.