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Primary air pollutant in the Altadena area:
OZONE - 41 Good
Enjoy your outdoor activities.
Primary Pollutant: OZONE - 34 Good
Secondary Pollutant: PM2.5 - 33 Good
Secondary Pollutant: PM10 - 17 Good
Secondary Pollutant: CO - 5 Good
Secondary Pollutant: NO2 - 24 Good
Primary Pollutant: NO2 - 36 Good
Secondary Pollutant: PM2.5 - 33 Good
Secondary Pollutant: PM10 - 26 Good
Secondary Pollutant: OZONE - 29 Good
Secondary Pollutant: CO - 8 Good