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IL it <br />Declining <br />Air Quality <br />The Boulder area's air quality has declined recently due to increased <br />urbanization and pollution from neighboring cities. Poor air quality stems from <br />three major factors: <br />1. Weather: Boulder County experiences high atmospheric ozone levels during <br />warm -weather months due to sunlight and reactive hydrocarbons in the <br />atmosphere. <br />2. Industrial emissions including automobiles exhaust, factory emissions, and <br />emissions from oil and gas production. <br />3. Population increase: Since 2000, Boulder County's population growth spurred <br />an increase in vehicle miles traveled (VMT). <br />Source: "Boulder County Says Urgent Action Needed to Improve Air Quality and Public Health," <br />Mews, July 21, 2022 <br />