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Primary air pollutant in the Helena area:
PM2.5 - 29 Good
Enjoy your outdoor activities.
Other Pollutants:
PM10 - 15 Good
OZONE - 27 Good
Friday: It will be another day with mostly cloudy to overcast skies and a high chance for scattered showers and storms. Winds will southerly at 5-10 mph. PM2.5 and Ozone are both expected to remain in the green (good) range of the AQI. ML
Primary Pollutant: OZONE - 45 Good
Secondary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 43 Good
Secondary Pollutant: OZONE - 36 Good
Primary Pollutant: OZONE - 36 Good
Secondary Pollutant: PM2.5 - 32 Good
Primary Pollutant: OZONE - 44 Good
Secondary Pollutant: PM2.5 - 33 Good
Primary Pollutant: OZONE - 50 Good
Secondary Pollutant: PM2.5 - 42 Good
Primary Pollutant: OZONE - 54 Moderate
Secondary Pollutant: PM2.5 - 47 Good