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Primary air pollutant in the National Harbor area:
OZONE - 23 Good
Enjoy your outdoor activities.
Clean, dry fall weather is expected to persist over the next several days. Low dew points and ample surface mixing over this period will ensure Good fine particulate levels through the weekend and into the first half of next week. For the latest air quality information, please visit our website here. -MDE
Primary Pollutant: PM2.5 - 28 Good
Primary Pollutant: PM2.5 - 33 Good
Primary Pollutant: PM2.5 - 33 Good