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New research links short-term PM2.5 exposure to decreased cognitive ability.

Recent research published in Nature Aging finds that short-term exposure to PM2.5 particles may affect cognitive ability.

The long-term affects of exposure to airborne hazards is well-known however, this recent research suggests that the short-term dangers may be more significant than previously thought.

The study measured cognitive impact using varying levels of PM2.5 and recorded the highest impact on cognitive ability after 21 to 28 days with PM2.5 levels of 8.52 to 10.25 μg per m3.

To provide some relevancy to those levels, view our Air Quality Monitor below to see current μg per m3 levels in your area.

4C Air has developed a new BreSafe nanotechnology and is offering a face mask that provides excellent protection from PM2.5 particles in areas with high exposure. The great benefit to these masks is the amazing breathability they have while also providing a high level of filtration for the wearer.

Click here to view these masks.

The full study is referenced below.


Ryan, J., Owen, A.J. The impact of the climate crisis on brain health. Nat Aging (2021).

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