Posted by Axios on July 12, 2019 08:47:59 The U.S. Air Quality Index (AQI) is a ranking of air quality across the country based on data collected by the Centers for Disease Control and Prevention.
It measures the concentration of PM 2.5 and fine particulate matter (PM2.5) particles that cause respiratory illness and lung damage.
has been at the bottom of the list for the past several years.
The 2016 AQI was the worst in the U..
S., but has improved slightly in recent years.
Since 2014, AQI readings have fallen across the U, from 9.7 in 2016 to 9.3 in 2019.
The best year in AQI’s history came in 2007, when AQI fell to 9 and reached its lowest level in 25 years.
As the number of air pollution cases has fallen, the U.,S.
also has been among the nations leading countries in improving air quality.
The nation’s pollution problem is not limited to the U and its surrounding states.
While most of the U’s pollution is in the East, a few states in the Midwest and West have suffered from more serious pollution problems.
The worst state for air quality is Mississippi, where air quality has fallen by 30% in the past five years.
While the state’s pollution problems are not as severe as those of the South, Mississippi’s pollution levels are worse than those in New Jersey and Pennsylvania.
In 2017, the state was one of the top five worst states for ozone pollution, according to the Environmental Protection Agency (EPA).
The Mississippi Department of Health has reported that the state had the worst ozone problem in the country in 2017, according the agency.
In 2020, the pollution levels were so bad that residents had to wear masks.
The state was ranked the third worst in ozone in the nation, according EPA data.
The Mississippi Delta has also experienced some of the worst pollution in the South.
The air quality in the Delta is the highest in the state.
The EPA data show that the Delta has the third-highest pollution in all of South Carolina.
The pollution levels in the delta have been so bad for so long that it is a real health hazard.
The Delta is located in the Black Hills of South Dakota, and many of its residents live in low-income areas where the air quality problems are exacerbated.
The Black Hills region is home to the Mississippi River, a waterway that runs through the Black Mountains.
This air quality problem is exacerbated by the fact that the Black Mountain Water Company (MBCW) in South Dakota owns a dam that is located just downstream of the Mississippi river.
It is a major source of the pollution in Mississippi.
The MBCW owns the dam that has caused so much of the problems for the Delta residents.
In order to maintain its dam, the MBCU, the largest water company in the region, uses a process called desalination.
The water used to make desalinated water is treated with an ammonia-based fertilizer called BHT.
When the ammonia-containing fertilizer enters the water, it dissolves oxygen in the water and causes the water to freeze.
This causes the ammonia to react with the nitrogen in the air to form ozone.
This ozone is harmful to people living in the area.
The ammonia also causes water to become polluted and causes algae blooms.
In some cases, the algae blooming causes a major health hazard for residents living in areas of the Black River Delta where the water quality has worsened.
The area in which the Mecubia River runs is the most polluted in the entire Black Hills.
In a report by the EPA, the agency estimated that Mississippi had the fourth-highest number of ozone smog days, or days with an ozone level of 5.5 parts per million.
In addition to the pollution caused by the MECUBia dam, there are other major sources of ozone pollution.
For example, the Mississippi Delta region is located about 70 miles north of Mississippi’s capital, Jackson.
The region includes the cities of St. Louis, Hattiesburg, Jackson, and Hattiesville.
All of these cities are near oil refineries and the Mississippi Gulf Coast.
The Gulf is the main source of air pollutants that affect Mississippi residents.
The ozone pollution in St. Paul, Minnesota is not only a problem in Mississippi, but also in nearby Minneapolis, where ozone levels have increased dramatically over the past two years.
In January, the Minnesota Department of Environment and Natural Resources (MDEQ) released data showing that ozone pollution had risen by 30%.
The report also found that ozone levels had increased in the St. Cloud region.
This increase in ozone levels has been linked to an increase in the number and severity of respiratory illnesses.
A number of residents living near the MRCs plant in St Paul have reported that ozone is also affecting their health.
In 2018, a man living near MRC’s plant in Mississippi died from a respiratory illness, according WCCO