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Primary air pollutant in the Walden area:
PM2.5 - 39 Good
Enjoy your outdoor activities.
Other Pollutants:
PM10 - 19 Good
Primary Pollutant: PM2.5 - 52 Moderate
Primary Pollutant: PM2.5 - 50 Good
Primary Pollutant: PM2.5 - 44 Good