Ambient Weather Support

Can the PM25/PM2.5 sensor measure pollen?

No. Pollen doesn’t have much effect on the AQI for particle pollution. Most pollen particles are much larger than the particles we measure for the AQI. The size of PM2.5 is 2.5 micrometers in diameter or smaller while pollen particles are usually well over 10 micrometers. Pollen particles can sometimes rupture and break into smaller airborne particles in the PM2.5 range, but their contribution is too small to make a difference in the AQI.