
Wildfire Smoke Is Reversing Years of US Ozone Progress
A new analysis of US air data from 2003 to 2024 finds wildfire smoke has helped flip a long decline in surface ozone into an increase after 2015.
- Researchers say wildfire smoke helped shift US ozone levels from declining before 2015 to rising afterward.
- The analysis covered 2003 to 2024 and linked wildfire-driven ozone to increasing premature deaths.
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