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Ryan Jacob CAE News

Los Angeles is once again named the No. 1 city with the worst air pollution in America. Compared to other cities charged with the same offense, Los Angeles has held the title for nearly all the American Lung Association’s annual “State of the Air” report’s 19-year history. Ryan Jacob, a CAE or Clean Air Engineering student, adds that Los Angeles isn’t the only one making history. In fact, California should be given more notice because it has 8 of the top 10 cities with the worst air pollution in America.

Most Polluted Cities

Ryan Jacob CAE shares top 10 rankings based on the latest State of the Air report below:

  • #1. Los Angeles-Long Beach, CA
  • #2. Bakersfield, CA
  • #3. Visalia-Porterville-Hanford, CA
  • #4. Fresno-Madera, CA
  • #5. Sacramento-Roseville, CA
  • #6. San Diego-Carlsbad, CA
  • #7. Modesto-Merced, CA
  • #8. Phoenix-Mesa-Scottsdale, AZ
  • #9. Redding-Red Bluff, CA
  • #10. New York-Newark, NY-NJ-CT-PA

This ranking is based by ozone pollution. However, California doesn’t escape its fate in the other two categories, by year round particle pollution and by short-term particle pollution.

For the former, Ryan Jacob CAE shares how California fares below:

  • #1: Fairbanks, AK
  • #2: Visalia-Porterville-Hanford, CA
  • #3: Bakersfield, CA
  • #4: Los Angeles-Long Beach, CA
  • #5: Fresno-Madera, CA
  • #6: Modesto-Merced, CA
  • #7: El Centro, CA
  • #8: Lancaster, PA
  • #8: Pittsburgh-New Castle-Weirton, PA-OH-WV
  • #10: San Jose-San Francisco-Oakland, CA
  • #10: Cleveland-Akron-Canton, OH

As you can see, 7 of the top 10 cities are still in California. Meanwhile, for the latter or by short-term particle pollution, the rankings look like this:

  • #1: Bakersfield, CA
  • #2: Visalia-Porterville-Hanford, CA
  • #3: Fresno-Madera, CA
  • #4: Fairbanks, AK
  • #5: Modesto-Merced, CA
  • #6: San Jose-San Francisco-Oakland, CA
  • #7: Los Angeles-Long Beach, CA
  • #8: Salt Lake City-Provo-Orem, UT
  • #9: El Centro, CA
  • #10: Pittsburgh-New Castle-Weirton, PA-OH-WV

Again, 7 of the top 10 cities are in California. Why is this so?

Ryan Jacob CAE chalks it up to a confluence of factors. First, California has a large population, now estimated around 39.78 million people. That’s nearly 40 million people each with their own activities contributing to air pollution, from driving their own cars to using household and commercial consumer products that release air pollutants. And that’s just to account for personal activities. California is also a bustling city, and business activities and industries contribute to the air pollution as well.

Second, Ryan Jacob CAE explains that California’s topography or terrain and warm, sunny climate are trapping all the air pollution produced in the state. The surrounding mountains make it difficult for air to circulate, hence trapping air pollution, while those sunny days trap air pollutants close to the ground.

Cleanest Cities

Now what about the cleanest cities in America?

If based on year-round particle pollution, the top 10 are:

  • #1: Cheyenne, WY
  • #2: Urban Honolulu, HI
  • #3: Casper, WY
  • #5: Bismarck, ND
  • #5: Kahului-Wailuku-Lahaina, HI
  • #6: Pueblo-Canon City, CO
  • #7: Elmira-Corning, NY
  • #9: Palm Bay-Melbourne-Titusville, FL
  • #9: Sierra Vista-Douglas, AZ
  • #10: Wenatchee, WA

Stay tuned to this page for more news about air pollution by Ryan Jacob CAE.