Front Range Air Quality Forecast & Colorado Smoke Outlook for Aug 6

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 Wednesday, August 5, 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 reach the Moderate to Unhealthy for Sensitive Groups range on Thursday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely from southwestern portions of the Denver metro area, northward along the lower foothills through Golden, Boulder, Longmont, and Fort Collins.

This Ozone Action Day Alert will remain in effect until at least 4 p.m. Thursday, August 6, 2020.

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

The highest Ozone related AQI at 9 o'clock AM Mountain Standard Time on August 6, 2020, is 41 which indicates Good ozone air quality. It was recorded by the BHWK ambient ozone monitor.

The highest Particulate Matter (PM2.5) related AQI at 9 o'clock AM Mountain Standard Time on August 6, 2020, is 54 which indicates Moderate Particulate Matter (PM2.5) air quality. It was recorded by the NJH 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:
Thursday, August 6, 2020, 7:40 AM MDT

Ozone concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely for southwestern portions of the Denver Metro area, northward along the lower foothills through Golden, Boulder, Longmont, and Fort Collins. 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 Thursday. For all other parts of the Front Range region, Moderate concentrations of ozone are expected, and unusually sensitive people should consider reducing prolonged or heavy outdoor exertion from noon to 10 pm on Thursday.

Fine Particulate Matter concentrations are expected to be in the Good to Moderate range on Thursday. Moderate concentrations of fine particulate matter are most likely for locations within the Denver metro area, northward along the Platte River Valley into southern and central parts of Weld County, including Greeley. In these areas, unusually sensitive people should consider reducing prolonged or heavy exertion on Thursday.

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

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

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