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Special Air Quality Statement
Air Quality Health Advisory for Wildfire Smoke for Jefferson County, including Genesee and Golden.

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Front Range
No Advisories in Effect

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This is the Denver Metro Air Pollution Forecast effective 4PM on Friday, 9/20/2019:

No advisories are in effect until at least 4 p.m. on Saturday for the Front Range Urban Corridor from El Paso County north to Larimer and Weld counties, including the Denver-Boulder area, Colorado Springs, Fort Collins and Greeley.

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

At 8PM (MST), Friday, 9/20/2019 the highest AQI value was 63 for Particulate less than 10 micrometers which indicates Moderate air quality. 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.

The Colorado Department of Public Health and Environment and the Regional Air Quality Council's Summer 2019 Ozone Action Day Alert Program has concluded. The winter High Pollution Advisory Program begins on November 1. Air Quality Action Days or advisories for ozone for other pollutants, however, will be issued as needed at any time during the year and reported on this web page.

The Air Pollution Control Division's Winter 2019/2020 High Pollution Advisory Program will begin November 1. Thank you for your interest in and support for efforts to improve air quality for the citizens of the Denver- metro area.


Front Range Air Quality Forecast & Colorado Smoke Outlook
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FRONT RANGE AIR QUALITY FORECAST:
Friday, September 20, 2019, 1:40 PM MDT

Ozone concentrations are expected to be in the Good to Moderate range Friday through Monday. Moderate concentrations of ozone are most likely for locations in the western portions of the northern Colorado Front Range, including western portions of the Denver Metro area, and northward along the foothills through Boulder, Longmont, and Fort Collins. In these areas unusually sensitive people should consider reducing prolonged or heavy outdoor exertion between noon and 8 PM Friday through Monday.

Fine Particulate Matter concentrations are expected to be in the Good to Moderate range Friday through Monday. Moderate concentrations of fine particulates are most likely for locations within the Denver Metro area, particularly near heavy industrialized areas, as well as northward into southern and central Weld County including Greeley. In these areas, unusually sensitive people should consider reducing prolonged or heavy exertion on Friday.

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

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

Visibility is expected to be Good to Moderate, Friday through Monday.

COLORADO SMOKE OUTLOOK:
Friday, September 20, 2019, 5:00 PM MDT

Air Quality Health Advisory for Wildfire Smoke

Issued for portions of Jefferson County
Issued at 5:00 PM MDT, Friday, September 20, 2019

Issued by the Colorado Department of Public Health and Environment

Affected Area: Central portions of Jefferson County. Locations include, but are not limited to Genesee and Golden

Advisory in Effect: 5:00 PM MDT, Friday, September 20, 2019 to 9:00 AM MDT, Saturday, September 21, 2019.

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 heavy smoke from the Bald Mountain Wildfire will generally move to the east and northeast of the Fire through Friday evening, possibly bringing periods of smoke to areas downwind including Golden. As the winds calm overnight Friday night, smoke will settle and could produce periods of heavy smoke to Genesee and Golden through early Saturday morning.

The 885 acre Decker wildfire is located in northeastern Saguache County, approximately 8 miles south of Poncha Springs. Winds near the fire on Friday will primarily be out of the southwest. This will transport smoke to locations northeast of the fire. Winds will be breezy at times, possibly increasing fire activity and smoke production. This could bring periods of light to moderate smoke to Salida, Cleora, Wellsville, and Howard. Winds will likely remain primarily out of the west through Monday, though winds direction may oscillate, shifting to come from the northwest, west, and southwest at times. Winds may be also be breezy at times throughout the weekend. During overnight hours, light drainage winds may allow smoke to settle in locations below the fire, both to the south and southwest in northeastern Saguache County, and toward the east or northeast in western Fremont County. Areas with the best chance for smoke will be along and near US Highway 285, from Alder south to Villa Grove, and in areas of the Arkansas River Valley near State Highway 50 near Wellsville and Howard.

Prescribed burning operations may take place on Friday north of Red Feather Lakes in eastern Larimer County. Smoke from this burn will be visible in the area of Red Feather Lakes and from Highway 287 between Livermore and Virginia Dale. Light smoke is expected to be transported to the north or northeast of this area, remaining primarily in rural portions of Larimer County, just south of the Wyoming State line. Residual smoke production from smoldering fuels and continued operations on this prescribed burn may continue throughout the weekend. In this vicinity, unusually sensitive people should consider reducing prolonged or heavy exertion Friday through Monday.

Light to moderate concentrations of smoke are also 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.


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)

Winter High Pollution Advisory Program
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The Winter High Pollution Advisory Program is coordinated by the Air Pollution Control Division of the Colorado Department of Public Health and Environment.

Winter season air pollution forecasts are issued daily from October 31 through March 31 at 4 p.m. When conditions warrant, forecasts will include information about Action Days and subsequent indoor burning restrictions.

An Action Day for fine particulates, carbon monoxide or ozone 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 trigger mandatory restrictions that limit indoor burning to approved devices only (see indoor burning above), voluntary driving reductions, and public health recommendations.

An Action Day for Visibility alone indicates that the Visibility Standard Index for visual air quality is expected to be poor on the current or following day. An Action Day for Visibility will trigger mandatory restrictions on indoor burning and voluntary driving reductions for the seven-county Denver-Boulder metropolitan area only.

When no advisories are issued, air quality is good or moderate and is expected to remain so during the effective period of the forecast. No restrictions are in place.

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.