Why does MEDEP issue air quality forecasts year-round?
MEDEP Air Quality Meteorologists issue Air Quality Forecasts every day of the year because air quality is not just seasonal. Ozone is a photochemical pollutant which means it requires strong sunlight. That is why ozone levels are only a problem in Maine during the warmer months. However, particle pollution levels can climb at any time of the year in Maine. During the summer months particle pollution levels can rise due to regional events. During the winter particle pollution levels can climb due to a combination of factors including winter heating needs. For more information about why this is the case, go to: http://www.maine.gov/dep/air/woodsmoke/woodsmokeinME.htmor http://www.maine.gov/dep/air/meteorology/airqualitytrends/partannualtrend.htm.
