There are plenty of deals to be had during the second day of Amazon Prime Day sales, but you can't beat a deal on cleaner air. Right now, the Blueair 411 Auto air purifier is 34% off at $93.

An LED indicator displays air quality status as excellent (blue), moderate (orange) or polluted (red), so you can monitor the quality of the air in real-time.

Blueair Air Purifier (save $42)

$93 at Amazon

This air purifier removes 99.97% of airborne particles, like viruses and bacteria, dust, pollen, dander, and mold. It can clean spaces that are 190 square feet in 12.5 min or up to a 912 square-foot space in an hour when on the highest setting. Blueair's purifiers are also 40% more energy-efficient than standard models.

You can also save on this air purifier's two other sizes: the Blue 311 Auto for rooms up to 1,862 square feet for $168 or the Blue 211+ Auto  for rooms up to 2,640 square feet for $238.

For more savings well within your budget, check out our deals page for Prime Day savings under $100. 

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• The 100+ best October Prime Day deals you can buy: Live updates
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• The best Android phones you can buy (including a surprise pick)
• The best robot vacuum and mop combos (and if they're worth the money)