What is the air quality like in Helena?
Helena has an average AQI of 48, which falls in the "Good" category. About 60% of days have Good air quality, 28% are Moderate, and 10% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Helena?
The primary pollutant in Helena is PM2.5. The city's average PM2.5 level is 8.8 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 36 ppb. Major pollution sources include wildfires, wood burning, vehicles.
Is Helena affected by wildfire smoke?
Helena has a very high wildfire risk rating. Wildfire smoke frequently degrades air quality, sometimes pushing AQI into unhealthy ranges for extended periods.
How many good air quality days does Helena have?
Approximately 60% of days in Helena have Good air quality (AQI 0-50). This means the majority of the year has clean, breathable air.
What about allergies in Helena?
Air quality and pollen counts can both affect respiratory health in Helena. On days with higher AQI levels, allergy symptoms may worsen. Using a HEPA air purifier indoors and monitoring both AQI and pollen counts can help manage symptoms.