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Special Air Quality Statement
Air Quality Health Advisory for northwestern Colorado

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Front Range
No Ozone Action Day Alert in Effect
Until at least 4 p.m. 06/21/2021

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This is the Front Range Air Pollution Forecast effective 4PM on Sunday, June 20, 2021:

No Advisories for Ozone or any other pollutant are in effect until at least 4 p.m. Monday, June 21, 2021 for the Front Range Urban Corridor from Douglas County north to Larimer and Weld counties, including the Denver-Boulder area, Fort Collins and Greeley.

Cooler weather will keep ozone concentrations in the Good to Moderate range through Monday afternoon.

Should atmospheric conditions suggest increased ground-level ozone concentrations, the Colorado Department of Public Health and Environment and the Regional Air Quality Council will issue an ozone advisory. In addition, if conditions warrant, the Colorado Department of Public Health and Environment will issue advisories for other pollutants. Check this website (https://colorado.gov/airquality/advisory.aspx) often for a report on current air quality conditions and to learn if an ozone action day alert is in effect.

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

The highest Ozone related AQI at 7 o'clock AM Mountain Standard Time on June 21, 2021, is 33 which indicates Good ozone air quality. It was recorded by the HLD ambient ozone monitor.


Front Range Air Quality Forecast & Colorado Smoke Outlook
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FRONT RANGE AIR QUALITY FORECAST:
Monday, June 21, 2021, 7:00 AM MDT

Ozone concentrations are expected to be in the Good to Moderate range on Monday. Unusually sensitive people should consider reducing prolonged or heavy exertion from noon to 8 pm.

Fine Particulate Matter concentrations are expected to be in the Good category on Monday.

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

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

Visibility in Denver on Monday is expected to be Good.

COLORADO SMOKE OUTLOOK:
Monday, June 21, 2021, 6:30 AM MDT

Air Quality Health Advisory for Wildfire Smoke

Issued for Moffat, Rio Blanco, Garfield, Routt, and Eagle Counties
Issued at 6:30 PM MDT, Sunday, June 20, 2021

Issued by the Colorado Department of Public Health and Environment

Affected Area: Moffat, Rio Blanco, Garfield, Routt, and Eagle Counties. Locations include, but are not limited to Craig, Meeker, Rifle, Glenwood Springs, Steamboat Springs, Eagle, and Vail.

Advisory in Effect: 6:30 PM MDT, Sunday, June 20, 2021 to 9:00 AM MDT, Monday, June 21, 2021.

Public Health Recommendations: 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.

Outlook: Areas of moderate to heavy smoke have been observed across the advisory area Saturday evening due to smoke transported from both in-state and out-of-state wildfires. Smoke will likely linger overnight as the winds turn calm, particularly in valley locations.



The 200 acre West wildfire is located in northwestern Moffat County near the Colorado/Wyoming state line. Northwesterly winds at the fire could send smoke into Moffat County through Monday evening. Overnight smoke will generally stay in close vicinity to the fire through Tuesday morning.

The Oil Springs wildfire is located in southwestern Rio Blanco County. Smoke from the fire will be transported southeast of the fire through Monday evening, perhaps bringing periods of light to moderate smoke to locations along I-70 between Palisade and Glenwood Springs. Overnight smoke will likely drain into the North Fork Texas Creek drainage and remain away from populated areas.

The Sylvan wildfire is located in southern Eagle County just south of Sylvan Lake State Park. Northwest winds at the fire will send smoke to the southeast through Monday evening, perhaps bringing periods of light to moderate smoke to Leadville. Overnight smoke will likely drain northward into Sylvan Lake State Park.

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.


Summer Ozone Program
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Ground-level ozone is an air pollution problem that impacts the health of all Coloradans. Exposure can cause acute respiratory problems and trigger asthma attacks. During Ozone Action Alerts, avoid rigorous outdoor activity during the heat of the day. Prolonged exposure can cause long-lasting damage to your lungs.

You CAN make a difference by doing your part to improve air quality along Denver's Front Range. Combining or skipping just two car trips a week has a positive impact on our air quality. Find other easy solutions that fit your lifestyle from Simple Steps. Better Air. (http://www.SimpleStepsBetterAir.org), a program of the Regional Air Quality Council.

Additional Information
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WHAT IS AN ACTION DAY?: An Action Day for fine particulate matter, carbon monoxide, ozone or other pollutants indicates that either current air quality is unhealthy or conditions are expected to worsen later in the day or on the next day. Action Days for air pollutants generally indicate that air quality will be in either the Unhealthy or Unhealthy-for-Sensitive-Groups categories according to the Air Quality Index. Action Days always convey overarching public health recommendations, and, according to season, trigger a variety of mandatory and voluntary pollution prevention measures. For example, during the summer open burning is prohibited when an Action Day for ozone and/or fine particulates is in effect. During the winter, residential burning restrictions are in effect when an Action Day for Visibility is in effect.

For a detailed description of both the AIR QUALITY INDEX and the VISIBILITY STANDARD INDEX please visit https://www.colorado.gov/airquality/brochure.aspx

COLORADO OPEN BURN FORECAST: For those with permits for open burning, that is the burning of waste materials or vegetation outside, check the following webpage to find out if open burning is allowed today. Keep in mind that open burning is prohibited when an Action Day is in effect:
https://www.colorado.gov/airquality/burn_forecast.aspx

FOR CURRENT FRONT RANGE ACTION DAYS/ADVISORIES:
https://www.colorado.gov/airquality/advisory.aspx

FOR CURRENT AIR QUALITY CONDITIONS STATEWIDE:
https://www.colorado.gov/airquality/air_quality.aspx

SOCIAL MEDIA:
https://www.facebook.com/cdphe.apcd
https://twitter.com/cdpheapcd


AIR QUALITY NOTIFICATIONS:
https://www.colorado.gov/airquality/request_alerts.aspx(CDPHE automated e-mail alerts)
http://www.enviroflash.info/signup.cfm(CDPHE forecasts via automated e-mails from the EPA)