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  • Denver Air Quality Generally Good, Winter Pollution Advisory Begins

    Denver Air Quality Generally Good, Winter Pollution Advisory Begins
    2025/11/01
    Today, Denver’s air quality is generally considered good, with some periods of moderate levels, primarily due to fine particulate matter. For Saturday, November 1, 2025, there are no current air quality advisories issued for the Denver metro region, and the winter High Pollution Advisory Program has just begun. Officials will now monitor daily pollution levels more closely through winter to protect residents’s health[5][6].

    The Air Quality Index (AQI) for Denver early this morning is in the good range, meaning pollution poses little or no risk for most people. Fine particulate matter, known as PM2.5, is the main concern this time of year. PM2.5 consists of tiny particles from sources like vehicles, fireplaces, and atmospheric conditions that can penetrate the respiratory system. While levels are not high enough to warrant an Action Day or burning restrictions as of now, individuals who are unusually sensitive to air pollution—such as those with chronic respiratory conditions, young children, or the elderly—should still monitor air quality forecasts[4][5].

    The air in Denver during November is typically influenced by colder temperatures and atmospheric inversions, which trap pollutants close to the ground and can create the familiar “Brown Cloud.” This haze is made up of particulate matter and can impair visibility and affect respiratory health. The Colorado Department of Public Health and Environment (CDPHE) issues daily air pollution advisories, calling for voluntary driving reductions or indoor burning restrictions whenever conditions exceed standards[3].

    Ninety percent of the days so far this year in Denver have been within safe air quality limits, indicating a very low health risk for most residents. However, occasional spikes in pollution—most commonly during stagnant weather or when wildfire smoke drifts from other states—can temporarily elevate particulate matter and ozone, prompting caution for sensitive groups[2][3][4].

    Overall, the city’s air is safe for outdoor activity today, but the start of winter could bring more frequent advisory periods, particularly on calm days when pollution builds up. Denver residents are encouraged to stay informed through state forecasts, reduce unnecessary burning, and help limit emissions on poor air days to protect community health[3][5].

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  • Denver's Air Quality Moderate, Particulate Matter Peaks in Early Morning

    Denver's Air Quality Moderate, Particulate Matter Peaks in Early Morning
    2025/10/25
    Denver’s air quality today is in the Moderate range, with the highest recorded Air Quality Index, or AQI, reaching 68 for particulate matter less than 10 micrometers early in the morning. Throughout much of the city, the AQI has hovered between the high 50s and mid 60s, primarily driven by fine particulate pollution. Ozone and other pollutants remain in the Good category.

    Moderate air quality means that air pollution levels are acceptable for most people, but there is a slight risk for individuals who are unusually sensitive to airborne particles, such as those with respiratory or heart conditions. These individuals should consider reducing prolonged or heavy outdoor exertion, especially if they notice symptoms like coughing or throat irritation.

    No air quality advisories are currently in effect for Denver or the surrounding Front Range Urban Corridor. Carbon monoxide and nitrogen dioxide remain well within Good levels, and ozone is expected to remain in the Good category through the weekend. The highest particulate concentrations were seen near the South Platte River corridor, from Denver northward, but pollution levels are projected to improve in the coming days.

    In terms of visibility, conditions are likely to be moderate to poor at times on Saturday in the Denver area, with improvements expected beginning Sunday. The overall health risk for the Denver area today is considered very low for the general population, and 90 percent of the year’s days so far have been within the World Health Organization’s recommended air quality guidelines.

    Outdoor activities can proceed as usual for most of Denver’s residents, though those with heightened sensitivity may wish to monitor symptoms and remain indoors during periods of increased particulate matter, especially during the early morning hours when daily AQI tends to peak. For most, today’s air remains suitable for work, school, and recreation outdoors.

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  • Denver Air Quality Remains Excellent with AQI Levels Well Below Health Concerns

    Denver Air Quality Remains Excellent with AQI Levels Well Below Health Concerns
    2025/10/18
    Denver’s air quality today is rated as Good, with the Air Quality Index in the low to mid 40s for ozone, and all primary pollutants—ozone, particulate matter, carbon monoxide, and nitrogen dioxide—remaining well below levels of health concern. There are no air quality advisories in effect for Denver or the broader Front Range region.

    The most recent measurements report a highest AQI value of 46 for ozone and 44 around midday yesterday, both categorized as Good by the Environmental Protection Agency. Air quality forecasts expect continued Good air quality conditions through the weekend.

    Throughout 2025, Denver’s air has remained largely within the World Health Organization’s safe limits, with over ninety percent of days rated as Good. The average AQI for the year has been 33, signifying consistently clean air. The highest AQI observed locally in the past two days reached 44 at 2 PM, while the lowest, a very clean 10, was recorded at 7 AM. These values reflect the typical daily pattern: slightly higher AQI numbers in the afternoon and lowest in the early morning hours, but always remaining within the Good category.

    Ozone, which tends to rise on hot, sunny days, has been the primary air quality concern in recent years, but today levels are low. Monitoring data from the Colorado Department of Public Health and Environment and the Regional Air Quality Council confirm no Action Day alerts for ozone or particulates are necessary, and no restrictions, such as burning or driving advisories, are in effect.

    For sensitive populations including young children, the elderly, and those with respiratory conditions, today’s air does not pose a measurable risk. Residents and visitors can safely engage in outdoor activities across Denver and surrounding counties. Visibility is forecasted to remain Good to Moderate, and the risk of acute or chronic health effects is considered very low given today’s pollution levels.

    Denver continues to benefit from improved air quality and stable weather conditions, supporting healthy outdoor recreation this October day.

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  • Denver's Air Moderate, Particulate Matter a Concern

    Denver's Air Moderate, Particulate Matter a Concern
    2025/10/11
    Denver’s air quality today is ranked as moderate, with an Air Quality Index of 52 to 58 measured at monitoring sites in the metro area. The primary pollutant for this reading is fine particulate matter less than 2.5 micrometers, with concentrations around 13 micrograms per cubic meter recorded early in the morning. This moderate AQI means air pollution is acceptable for most individuals but may pose a minor risk for those who are unusually sensitive, such as people with respiratory conditions or older adults.

    No official air quality advisories are currently in effect for the Denver-Boulder region or the greater Front Range Urban Corridor, and ozone levels remain in the good category. The absence of advisories indicates that most residents can go about daily activities without concern for air pollution, though sensitive groups may want to limit prolonged outdoor exertion. Recent trends from this week show Denver’s AQI has hovered in the moderate range, with daily highs typically occurring during early morning hours and lower readings later in the day.

    From a historical perspective, today’s AQI is among the higher readings seen on this date over the past years, but it does not cross into more hazardous categories. Weather conditions are mild, and visibility remains good across the area, with no significant smoke events or air quality alerts affecting Denver at this time.

    Overall, while Denver’s air is moderately affected by fine particulate pollution today, public health impacts are limited and outdoor activities remain safe for most people. However, individuals unusually sensitive to air pollution should monitor their symptoms and consider taking it easy until air quality improves further[2][3][1].

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  • Denver Air Quality Remains Good, Pollutant Levels Low

    Denver Air Quality Remains Good, Pollutant Levels Low
    2025/10/04
    Today’s air quality in Denver is considered good overall, with the Air Quality Index, or AQI, reading at 23 during the latest measurement. At this level, air quality poses little or no risk to health for the general public. The primary pollutants measured are particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, and carbon monoxide. Levels of fine particulate matter, PM2.5, are currently at 0 micrograms per cubic meter, while larger particulates, PM10, are slightly elevated at 38 micrograms per cubic meter, both remaining well within safe limits.

    Ozone levels in Denver are moderate this morning, with a recorded value reaching a maximum of 57 parts per billion during the overnight hours, briefly pushing the AQI into the moderate range at a peak value of 58. These moderate readings occur generally in the early morning and tend to decrease as the day progresses. The ozone level during most of Saturday is expected to remain in the good category, presenting minimal health concerns for sensitive groups, such as people with asthma or respiratory conditions.

    Carbon monoxide and nitrogen dioxide, both traffic-related pollutants, are measured at 140 parts per billion and 12 parts per billion respectively, showing no cause for concern. Sulfur dioxide is at a negligible 1 part per billion, well below any threshold that would prompt a health advisory.

    Meteorological conditions today in Denver support this good air quality, with sunny skies, a temperature around 29 degrees Celsius, low humidity at 14 percent, and light winds at 9 kilometers per hour. These weather factors help disperse any accumulating pollutants.

    Statistically, Denver enjoys relatively healthy air by international standards. This year, 91 percent of days have remained within the World Health Organization’s recommended safe limits, leaving the overall risk of air pollution-related health issues classified as very low for the region.

    In summary, residents and visitors to Denver today can enjoy outdoor activities without restriction, as air quality is firmly in the good range and pollutant concentrations are low. There are no advisories or special precautions recommended for any group. The outlook for the remainder of the day is for air quality to stay favorable as meteorological conditions remain stable and pollutant levels are expected to remain low.

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  • Denver Enjoys Excellent Air Quality on September 27, 2025

    Denver Enjoys Excellent Air Quality on September 27, 2025
    2025/09/27
    Denver’s air quality today, September 27, 2025, is rated as good with an Air Quality Index of 36, meaning the air is healthy for all residents. Fine particulate matter known as PM2.5 is measured at 2 micrograms per cubic meter, and larger particulate matter, PM10, is at 26 micrograms per cubic meter, both well below levels associated with health concerns. Ozone levels are low at 12 parts per billion, with other pollutants like nitrogen dioxide and carbon monoxide also reported at minimal concentrations.

    Over the past 24 hours, the air quality index in Denver fluctuated but consistently remained in the good range, with values peaking at 40 and dipping to as low as 18. The highest readings tended to occur midday, but at no point did air quality reach a level likely to pose health risks for sensitive groups or the general population.

    Denver’s air quality performance this year remains strong, with over 90 percent of days in 2025 so far falling under the World Health Organization’s safe limits. Denverites can be confident heading outdoors today—conditions are clear from significant pollution, thanks in part to dry weather, modest wind speeds around 4 kilometers per hour, and low humidity. No special precautions are recommended, and everyone can safely enjoy outdoor activities without restriction.

    Looking at historical data, Denver’s air quality on this date has consistently been classified as good in recent years, making today consistent with usual trends for early autumn. This overall clean air situation also suggests little lingering smoke or pollution from regional wildfires or industrial sources, both of which sometimes impact Colorado at this time of year.

    In summary, Denver is experiencing healthy air quality conditions today, with very low pollution levels, posing little or no risk even to sensitive populations. Residents and visitors alike can enjoy fall weather and outdoor pursuits without concern for air pollution impacts on health.

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  • Denver Enjoys Excellent Air Quality with No Health Concerns

    Denver Enjoys Excellent Air Quality with No Health Concerns
    2025/09/20
    Today’s air quality in Denver is rated as good, with the Air Quality Index generally measuring between 15 and 29 in the last 24 hours. This level means the air is clean and poses little or no risk to anyone and people are encouraged to enjoy outdoor activities without concern. The main pollutants measured include PM2.5 at 5 micrograms per cubic meter, PM10 at 17 micrograms per cubic meter, ozone at 27 parts per billion, and nitrogen dioxide at 13 parts per billion. All of these are considered well within safe limits for health according to both national and World Health Organization standards.

    No air quality advisories or health warnings are currently in effect for the Denver metropolitan area or the broader Front Range Urban Corridor. The ozone level reached its peak at 67 overnight Thursday, still only at the low end of the moderate range where only unusually sensitive individuals may experience minor respiratory symptoms. For the general population, the risk remains very low.

    For all of 2025 so far, Denver has experienced good or moderate air quality on about 90 percent of days, indicating that the vast majority of the year has seen air meeting or exceeding recommended safety standards for fine particulate matter and ozone. This places Denver among cities with consistently healthy outdoor air, supported by weather conditions such as clear skies, comfortable humidity, and light winds.

    Outdoor exercise, commuting, or extended time outside are all considered safe for people of every age and health status today. There are no restrictions or precautions suggested for schools, athletes, children, elderly, or individuals with respiratory conditions.

    Overall, today’s air quality in Denver offers a safe and pleasant environment for all outdoor activities, reflecting stable and low levels of pollution with clear public health assurances from state and local agencies.

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  • Denver Enjoys Clean Air with Good Air Quality Index

    Denver Enjoys Clean Air with Good Air Quality Index
    2025/09/13
    Air quality in Denver today is rated as Good, with an Air Quality Index around 31 to 34. This means the air is clear and safe for all populations, including sensitive groups such as children, seniors, and those with respiratory conditions. The main pollutants measured are particulate matter and ozone, but all remain well below levels that would raise health concerns.

    The current PM2.5 concentration, the fine inhalable particles often linked to health problems, is just 3 micrograms per cubic meter, and PM10, the larger dust particles, is measured at 24 micrograms per cubic meter. Ozone is at 37 to 40 parts per billion, also within the Good category for air quality. Levels of carbon monoxide, sulfur dioxide, and nitrogen dioxide are minimal and report no risk for short-term exposure.

    Weather conditions today are partly cloudy, with temperatures ranging from 15 to 30 degrees Celsius and humidity near 17 percent. Winds are light, measuring around 4 kilometers per hour, helping to keep air pollutants dispersed rather than concentrated.

    No air quality advisories or health alerts have been issued by the Colorado Department of Public Health for the Denver area or the Front Range. The outlook remains favorable for the next several days, with all pollutants expected to stay in the Good range. Visibility in the region is also expected to be good, further reflecting the low levels of particulates in the air.

    Historically, Denver has experienced excellent air quality for most of 2025, with 90 percent of days falling within the World Health Organization’s safe air quality limits. As of today, the public does not need to restrict outdoor activity due to air pollution. For those enjoying weekend plans outdoors, today’s air in Denver is among the cleanest it has been all year. Daily air quality will continue to be monitored by state and local agencies to ensure these conditions persist.

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