Front Range Air Quality Forecast & Colorado Smoke Outlook Aug 11

The Colorado Department of Public Health and Environment and the Regional Air Quality Council have issued an OZONE ACTION DAY ALERT at 4 p.m. on Monday, August 10, 2020 for the Front Range Urban Corridor from Douglas County north to Larimer and Weld counties, including the Denver-Boulder area, Fort Collins and Greeley.

Ozone concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Tuesday. Concentrations of ozone in the Unhealthy for Sensitive Groups category are most likely for locations within the Denver Metro area, including the surrounding suburbs and lower foothills.

This Ozone Action Day Alert will remain in effect until at least 4 p.m. Tuesday, August 11, 2020.

For statewide conditions, forecasts and advisories, visit:
www.colorado.gov/airquality/colorado_summary.aspx

The highest Ozone related AQI at 8 o'clock AM Mountain Standard Time on August 11, 2020, is 45 which indicates Good ozone air quality. It was recorded by the NREL ambient ozone monitor.

The highest Particulate Matter (PM2.5) related AQI at 8 o'clock AM Mountain Standard Time on August 11, 2020, is 51 which indicates Moderate Particulate Matter (PM2.5) air quality. It was recorded by the I25DEN ambient monitor. Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults. Unusually sensitive people should consider reducing prolonged or heavy exertion.

FRONT RANGE AIR QUALITY FORECAST:
Tuesday, August 11, 2020, 7:40 AM MDT

Ozone concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Tuesday. Concentrations of ozone in the Unhealthy for Sensitive Groups category are most likely for locations within the Denver Metro area, including the surrounding suburbs and lower foothills. In these areas active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion from noon to 8 pm on Tuesday. Moderate concentrations are expected elsewhere throughout the Front Range, and unusually sensitive people should consider reducing prolonged or heavy outdoor exertion from noon to 10 pm on Tuesday.

Fine Particulate Matter concentrations are expected to be in the Moderate category on Tuesday. Smoke transported from wildfires in western parts of Colorado will produce moderate levels of fine particulates throughout the Front Range region. Unusually sensitive people should consider reducing prolonged or heavy exertion on Tuesday.

Carbon Monoxide concentrations are expected to be in the Good category on Tuesday.

Nitrogen Dioxide concentrations are expected to be in the Good category on Tuesday.

Visibility on Tuesday is expected to be Moderate to Poor.
www.colorado.gov/airquality/advisory.aspx


Analysis from www.airnow.gov