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Front Range Air Quality Forecast & Colorado Smoke Outlook

Friday, August 23, 2019, 2:20 PM MDT

Ozone concentrations are expected to be in the Good to Moderate range on Friday and in the Moderate to Unhealthy for Sensitive Groups range on Saturday. Concentrations of ozone in the Unhealthy for Sensitive Groups category are most likely for locations in the northwestern portions of the Denver Metro area and northward along the foothills, including western portions of Boulder, Longmont, and into western Fort Collins. In these areas active children and adults, and people with lung disease, such as asthma should reduce prolonged or heavy outdoor exertion between 2 PM and 8 PM on Saturday. Elsewhere throughout the Colorado Front Range, Moderate concentrations of ozone are expected, and unusually sensitive people should consider reducing prolonged or heavy outdoor exertion between noon and 10 PM on Friday and Saturday.

Fine Particulate Matter concentrations are expected to be in the Good category on Friday and Saturday.

Carbon Monoxide concentrations are expected to be in the Good category Friday and Saturday.

Nitrogen Dioxide concentrations are expected to be in the Good category on Friday and Saturday.

Visibility on Saturday is expected to be Good to Moderate.

Friday, August 23, 2019, 2:30 PM MDT

Light to moderate concentrations of smoke are possible near small wildfires and prescribed burns around the state.

What if there is a wildfire or smoke in your area?
The focus of the Colorado Smoke Outlook is on large fires (e.g., greater than 100 acres in size). Nevertheless, smoke from smaller fires, prescribed fires, and/or smoke from new fires not yet known to CDPHE air quality meteorologists may cause locally heavy smoke. If there is smoke in your neighborhood, see the public health recommendations below.

Public health recommendations for areas affected by smoke:
If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and the elderly. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. IF VISIBILITY IS LESS THAN 5 MILES IN SMOKE IN YOUR NEIGHBORHOOD, SMOKE HAS REACHED LEVELS THAT ARE UNHEALTHY.

Colorado Department of Public Health & Environment/APCD/Technical Services Program
visit us at: http://www.colorado.gov/airquality - all data are preliminary