World major city air quality ranking
| # | city | US AQI |
|---|
| 1 | Santiago, Chile | 139 |
| 2 | Lima, Peru | 128 |
| 3 | Dubai, United Arab Emirates | 126 |
| 4 | Mumbai, India | 124 |
Air quality and pollution city ranking
| Major city | Followers |
|---|
| 1 | Santiago, Chile | 58.6K |
| 2 | Kuwait City, Kuwait | 39.9K |
| 3 | Dubai, United Arab Emirates | 240.6K |
| 4 | Ho Chi Minh City, Vietnam | 2.1M |
AQI values at or below 100 are generally thought of as satisfactory. When AQI values are above 100, air quality is considered to be unhealthy—at first for certain sensitive groups of people, then for everyone as AQI values increase.
In the Bay Area, there are really only two or three pollutants that are present in concentrations high enough to show up in the daily forecast. Ozone - Ground-level ozone, commonly called "smog," is the major summertime cause of poor air quality in the Bay Area.
Real-time India Cleanest city ranking
| # | city | US AQI |
|---|
| 1 | Cochin, Kerala | 7 |
| 2 | Solap, West Bengal | 13 |
| 3 | Thiruvananthapuram, Kerala | 15 |
| 4 | Visakhapatnam, Andhra Pradesh | 16 |
But Delhi's is extreme because of a combination of smoke from thermal plants and brick kilns in the capital region, effluents from a congested transportation network, stubble or biomass burning by farmers in neighboring states, and the lack of cleansing winds that causes air pollution to hang over the city.
24-hourly average concentration value (8-hourly in case of CO and O3) and health breakpoint concentration range. The worst sub-index is the AQI for that location. calculated only if data are available for minimum three pollutants out of which one should necessarily be either PM2.
India
| AQI Category (Range) | PM10 (24hr) | NO2 (24hr) |
|---|
| Good (0–50) | 0–50 | 0–40 |
| Satisfactory (51–100) | 51–100 | 41–80 |
| Moderately polluted (101–200) | 101–250 | 81–180 |
| Poor (201–300) | 251–350 | 181–280 |
These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.
Delhi Air Pollution: Real-time Air Quality Index (AQI)
| Current | Max |
|---|
| PM2.5 AQI | 157 | 223 |
| PM10 AQI | 90 | 647 |
| O3 AQI | 13 | 79 |
| NO2 AQI | 17 | 29 |
Ground-level ozone and airborne particles are the two pollutants that pose the greatest threat to human health in this country.
The combustion of fossil fuels like coal, petroleum and other factory combustibles is a major cause of air pollution. These are generally used in power plants, manufacturing facilities (factories) and waste incinerators, as well as furnaces and other types of fuel-burning heating devices.
Top 10 countries with the best environment in 2021
| Place | Country | Scores |
|---|
| 1 | Denmark | 82,5 |
| 2 | Luxembourg | 82,3 |
| 3 | Switzerland | 81,5 |
| 4 | United Kingdom | 81,3 |
1. Bangladesh. Bangladesh is now the most polluted country with 1st rank and an average concentration of PM 2.5 of 79ug/m3. The country is home to over 166 million people.
List of most-polluted cities by particulate matter concentration
| Position | Country | PM2.5 |
|---|
| 1 | India | 173 |
| 2 | India | 172 |
| 3 | India | 149 |
| 4 | India | 146 |
As per the report, the top most polluted city is Xinjiang in China followed by nine Indian cities. Ghaziabad is the second most polluted city in the world followed by Bulandshahar, Bisrakh Jalalpur, Noida, Greater Noida, Kanpur, Lucknow and Bhiwari.
Japan - the cleanest country in the world and their sense of environmental protection. Japan is the country most affected by natural disasters in the world, so the environment is destroyed, pollution is unavoidable. However, Japan is considered to be the greenest, cleanest and most beautiful country in the world.
The Top Seven U.S. States with the Worst Air Quality
- #1: California. California consistently ranks as the most polluted state in the country.
- #2: Pennsylvania. Pennsylvania, a state with a long-standing coal industry, has consistently struggled with ozone and particle pollution, according to the ALA.
- #3: Texas.
- #4: Washington.
- #5: Oregon.
- #6: Alaska.
- #7: Utah.
World air quality report
| Rank | City | 2020 AVG |
|---|
| 1 | Hotan, China | 110.2 |
| 2 | Ghaziabad, India | 106.6 |
| 3 | Bulandshahr, India | 98.4 |
| 4 | Bisrakh Jalalpur, India | 96 |
People in these 10 states have the lowest exposure to pollution and its consequences:
- Rhode Island.
- Montana.
- New York.
- Wyoming.
- New Mexico. Industrial toxins ranking: No.
- South Dakota. Industrial toxins ranking: No.
- Vermont. Industrial toxins ranking: No.
- New Hampshire. Industrial toxins ranking: No.
Coming in at the bottom of the list was Philadelphia, which was named the dirtiest city in America.
According to a 2009 report, around "60 percent of Americans live in areas where
air pollution has reached unhealthy levels that can make people sick".
Pollution level rankings 2019.
| Rank | City |
|---|
| 1 | Los Angeles-Long Beach, CA |
| 2 | Visalia, CA |
| 3 | Bakersfield, CA |
| 4 | Fresno-Madera-Hanford, CA |
