Air Pollution: The Most Polluted Cities in the United States: View List

IQAIR points out that air pollution is the greatest environmental threat to human health. The World Health Organization (WHO) reports that 99% of people live in areas with unsafe air quality levels. Air pollution is the second leading cause of death worldwide. This also poses a serious health risk to children under the age of five, second only to malnutrition.
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Our most polluted city
There are also hot spots in the United States. Ontario, California is the most polluted city in the country. Los Angeles is the most polluted major city. The five most polluted cities are in California. Here are the 10 most polluted cities in the United States in 2024:
Ontario, California
Bloomington, CA
Huntington Park, California
San Bernardino, CA
Fontana, California
Visalia, California
Texas Mission
Glendola, CA
Hanford, California
Conrow, Texas
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The least polluted city in the United States
Seattle, Washington is the cleanest major city in Waimia, Hawaii, the United States, with the lowest pollution in regional cities. The United States ranks 116 in the World Air Quality Report. This is the least polluted city in the United States:
Waimea in Hawaii
Sea view, Hawaii
California Waterfront
Washington Steinwood
Hawaii mountain view
Rand, Wyoming
Astoria, Oregon
Tiramoke, Oregon
Washington Silverdale
Hawaii Kiyi
FAQ
Why do South Asian countries have the most polluting?
South Asian countries are highly polluted due to industrial emissions, vehicle exhaust and biomass combustion. Rapid urbanization and the lack of strict environmental regulations also contribute to this problem.
What steps can be taken to reduce air pollution?
Governments can reduce pollution by enforcing stricter emission laws, promoting clean energy and improving public transport. Individuals can help by using environmentally friendly transportation and reducing waste.
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