The US capital city of Washington DC, known for its sprawling, suburban landscape, is also the capital of Washington state, the largest state in the country.
The city is home to the world’s third-largest oil refinery, and the Washington Air Quality Management District (WAQMD) operates more than 30 air quality monitoring stations across the state.
But it’s also home to some of the world-class air quality facilities in the US, including the nation’s largest nuclear power plant and the nations largest coal-fired power plant.
Here are five cities that rank highly in the quality of their air, according to the Environmental Protection Agency (EPA) and other government agencies.1.
Portland, OregonPortland is a small city in Oregon’s Cascade Mountains.
It has a population of just under 3,000 people, but it’s ranked first in the nation for average annual PM 2.5 concentrations, with a maximum reading of 7 micrograms per cubic meter.
It’s also ranked second in the world for average daily particle size, with 1.6 particles per cubic metre.
Portland is also home the largest solar-panel installation in the state, which means it’s home to an abundance of clean energy.
The Oregon Department of Environmental Quality (ODEQ) says solar panels are the best option for generating electricity, and its solar-generated power is a big contributor to its air quality.2.
New York CityNew York City is a large city on Staten Island, New York, in the Catskills.
The US city is also considered the city with the most air pollution in the United States, with an average PM 2