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Air Pollution Threatens Millions of Americans
22 Apr
Summary
- 152 million Americans breathe unhealthy air, impacting nearly half of children.
- Smog levels increased for millions, while soot pollution saw some improvements.
- AI data centers are increasingly contributing to air pollution concerns.

Air pollution remains a critical concern for 152 million Americans, affecting nearly half of the country's children and teens. According to a recent report, 44% of the U.S. population resides in areas with unhealthy pollution levels, posing particular risks to young people whose lungs are still developing. While some improvements in soot pollution were noted, smog levels have increased for millions between 2022 and 2024.
Southern and southwestern states, along with parts of Texas, experienced notable particle pollution. Bakersfield, California, continues to rank as the city with the worst year-round particle pollution. Emerging concerns also point to AI data centers as a growing source of air pollution.
This report also revisits regulatory decisions, referencing policies that have weakened environmental protections. Experts emphasize the need for robust pollution controls, especially for new data centers, and urge policy makers not to devalue the benefits of cleaner air for children's health.