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What is the largest air pollutant in the US?

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What is the largest air pollutant in the US?

Lead (Pb) 3-Month Average, 82% (from 2010) Nitrogen Dioxide (NO2) Annual, 57% Nitrogen Dioxide (NO2) 1-Hour, 50% Ozone (O3) 8-Hour, 21%

What is the #1 source of air pollution in the United States?

Mobile sources account for more than half of all the air pollution in the United States and the primary mobile source of air pollution is the automobile, according to the Environmental Protection Agency.

What are the top 5 air pollutants?

5 Major Outdoor Air Pollutants

  • Ozone (O3)
  • Nitrogen Oxides (NOx)
  • Carbon Monoxide (CO)
  • Sulfur Dioxide (SO2)
  • Particulate Matter (PM10 and PM2.5)

What city has worst air quality?

Pollution level rankings 2019

Rank City
1 Los Angeles-Long Beach, CA
2 Visalia, CA
3 Bakersfield, CA
4 Fresno-Madera-Hanford, CA

Who has worst air quality?

What country has the worst air quality?

# country 2020 AVG. US AQI
1 Bangladesh 162
2 Pakistan 153
3 India 141
4 Mongolia 128

Where is the best air quality in us?

States with the Best Air Quality

  • Hawaii. Hawaii has an air quality index of 21.2, the cleanest average air in the U.S. This is well in the good air quality index range.
  • Alaska.
  • Washington.
  • Oregon.
  • Maine.
  • Utah.
  • Ohio.
  • Georgia.

What is the most harmful air pollutant?

Ultrafine Particles (UFPs) UFPs are the most dangerous particulate matter because their tiny size makes them extremely inhalable.

What are the most common air contaminants?

The common air pollutants are:

  • Particulate matter (PM10 and PM2.
  • Ozone (O3)
  • Nitrogen dioxide (NO2)
  • Carbon monoxide (CO)
  • Sulphur dioxide (SO2)

What is the cleanest state to live in?

Here are the 10 states with the best natural environment:

  • North Dakota.
  • Rhode Island.
  • Nebraska.
  • New York.
  • Massachusetts.
  • South Dakota. Urban air quality: 47.6 unhealthy days/year.
  • New Hampshire. Urban air quality: 13.9 unhealthy days/year.
  • Hawaii. Urban air quality: 21.1 unhealthy days/year.

Where is the cleanest air on Earth?

The Caribbean island of Puerto Rico has the world’s cleanest air according to the latest World Air Quality Report by IQAir….COUNTRY RANKING: Cleanest air in the world.

Rank Country Ave. PM2.5
1 Puerto Rico 3.7
2 New Caledonia 3.7
3 US Virgin Islands 3.7
4 Sweden 5.0

Where is the purest air on Earth?

The Caribbean island of Puerto Rico has the world’s cleanest air according to the latest World Air Quality Report by IQAir. The report ranks 106 countries and territories by the level of fine particulate matter present in the air.

What two pollutants pose the greatest threat to human?

Ground-level ozone and airborne particles are the two pollutants that pose the greatest threat to human health in this country.

What are the six common air pollutants?

The six common air pollutants are particle pollution (often referred to as particulate matter), ground-level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead.

What are the most common air pollutants?

The U.S. Environmental Protection Agency (EPA) has named the six most common air pollutants, which are found all over the United States. These pollutants are ozone, particulate matter, carbon monoxide, nitrogen oxides, sulfur dioxide and lead.

What are four examples of air pollutants?

Sources and Effects of the 9 Major Air Pollutants Ozone. Ozone (O 3) is a secondary pollutant gas produced when two primary pollutants react in sunlight and stagnant air. Carbon Monoxide. Carbon Monoxide is a primary pollutant gas that comes from the burning of fossil fuels. Nitrogen Dioxide. Particulate Matter. Sulfur Dioxide. Toxic Air Pollutants. Stratospheric Ozone Depleters. Greenhouse Gases. Lead.

What are the main factors of air pollutants?

The natural factors causing air pollution are: Forest fires Wind erosion Radioactivity released from decay of rocks Volcanic eruptions.