The forecast for PM2.5 air pollution in the US indicates a gradual decline from 2024 to 2028, with values decreasing from 7.21 to 6.85 micrograms per cubic meter. Given that the PM2.5 level in 2023 was slightly higher, the year-on-year variation between 2024 and 2028 suggests a consistent downward trend. The Compound Annual Growth Rate (CAGR) over this five-year period reflects an average annual reduction in PM2.5 exposure.

Future trends to watch for:

Implementation of stricter environmental regulations could accelerate the reduction of PM2.5 levels.
Technological advancements in emission control for industries and transportation may contribute to further decreases.
Increasing urbanization might counteract some improvements if not managed with sustainable urban planning.