Denver’s air quality for Sunday, May 11, 2025, is in the moderate range, mainly due to ozone levels. At 3 PM on Saturday, the highest Air Quality Index value recorded for ozone was 97, which falls within the moderate category. This means that air is generally acceptable for the majority of the population. However, people who are unusually sensitive to ozone may experience mild health effects and should consider reducing prolonged or heavy outdoor exertion, especially between noon and 8 PM.

Forecasts for the Front Range indicate that ozone concentrations will remain in the good to moderate range through Monday. Fine particulate matter, carbon monoxide, and nitrogen dioxide are all expected to stay within the good category during this period, presenting minimal risk to the general population. Visibility is also expected to remain good to moderate across Denver.

A moderate air quality index is not typically dangerous for the average person, but those with respiratory conditions like asthma or other sensitivities should be cautious and consider limiting outdoor activities during peak ozone hours. No action days have been declared for today, meaning there are no additional restrictions or recommendations beyond general caution for sensitive individuals.

To summarize, Denver residents can expect decent air quality today, suitable for most outdoor activities. Sensitive groups should remain aware during the afternoon hours when ozone levels tend to rise, but no widespread health threats are present at this time. Ongoing weather patterns, including warm temperatures and increased sunlight, may continue to influence air quality over the next couple of days. Checking real-time updates is always advised for the most current information, especially for those with heightened sensitivity to air quality changes. The overall outlook remains stable and favorable for the general public in Denver today[1][4].

Today in Denver, air quality sits in the Moderate range on the Air Quality Index. Ozone concentrations are expected to range from Good to Moderate throughout the day. People who are unusually sensitive to ozone are advised to consider limiting prolonged or heavy outdoor exertion from noon until 8 pm. Fine particulate matter, carbon monoxide, and nitrogen dioxide all remain in the Good category, meaning levels are low and unlikely to affect the general population.

Visibility in Denver is expected to be Good to Moderate, with no major obstructions forecasted. These conditions are typical for spring, as meteorological patterns and increased sunlight can prompt higher ozone levels, especially during the warmest part of the afternoon. The key air quality concern for today is ozone, particularly for children, older adults, and anyone with pre-existing respiratory conditions.

For those in sensitive groups, it is wise to monitor any symptoms such as coughing or difficulty breathing and take breaks indoors if needed. While Action Days—when air quality is classified as Unhealthy or Unhealthy for Sensitive Groups—are not in effect today, the public is reminded that outdoor activities may still carry some risk for those who are more susceptible.

Outdoor burning restrictions are not currently in place, and the city-wide air remains generally healthy for most residents and visitors. Checking real-time updates from state and national air quality agencies is recommended for the latest conditions as they can shift with temperature, wind, and local pollution sources.

Today’s weather in Denver is partly sunny with temperatures reaching the mid-20s Celsius, which may contribute to mild ozone formation in the afternoon, making it a good idea for sensitive individuals to enjoy early morning or late evening outdoor activities. Overall, Denver’s air quality today supports most outdoor plans, provided sensitive groups remain cautious during the afternoon hours.

Today in Denver, air quality concerns are important to keep in mind. According to the most recent forecast, Denver’s Air Quality Index has reached a level that is considered poor. This means that air pollution has climbed high enough to be considered unhealthy for sensitive groups, such as children, older adults, and people with underlying respiratory conditions. If you belong to one of these groups, or if you notice symptoms like difficulty breathing or throat irritation, it is a good idea to limit your time outdoors and reduce strenuous activities outside today.

No official air quality advisories are currently in effect for the Denver-Boulder area and the rest of the Front Range Urban Corridor, according to the Colorado Department of Public Health and Environment. The highest ozone values recently measured were within the “Good” range, but today’s conditions indicate a change, with increased pollution levels prompting warnings for sensitive individuals. It is worth noting that ozone levels and other pollutants can fluctuate throughout the day based on weather and local emissions, so real-time monitoring is always helpful for planning outdoor activities. Action Day Alert programs for the summer season, which focus on ozone pollution, are set to begin in June.

Today also coincides with World Asthma Day and the broader Air Quality Awareness Week, a time dedicated to promoting resources and information about the impact of air pollution on health. Staying informed and taking simple precautions can help protect you and your loved ones from the effects of poor air quality.

Keep an eye on symptoms, monitor updates from local health agencies, and try to stay indoors during periods of elevated pollution. For those sensitive to air quality changes, running air purifiers and keeping windows closed can also make a difference in indoor air quality.

Today's Air Quality in Denver

As of today, May 4, 2025, Denver is experiencing good air quality conditions. The Front Range Urban Corridor, which includes the Denver-Boulder area, Fort Collins, and Greeley, currently has no air quality advisories in effect[1][3].

The most recent air quality data from yesterday, May 3, showed an Air Quality Index (AQI) value of 74 for Ozone, indicating Moderate air quality conditions[1]. Today's forecast suggests continued favorable conditions with an AQI of 26, which falls in the Good category[5].

Temperature-wise, Denver is expected to reach approximately 25°C (77°F) today with a low of 12°C (54°F)[2]. These pleasant conditions are expected to change in the coming days, with forecasts showing a drop in temperatures starting Monday.

For unusually sensitive individuals, yesterday's Moderate air quality levels may have caused some respiratory symptoms, and such individuals were advised to consider reducing prolonged or heavy outdoor exertion[1]. However, with today's improved air quality, no special precautions are needed, and everyone can enjoy outdoor activities freely[5].

The Colorado Department of Public Health and Environment's Summer 2025 Ozone Action Day Alert Program is set to begin on June 1, while the winter High Pollution Advisory Program will start on November 1[1]. These programs are part of ongoing efforts to monitor and improve air quality for Denver metro area residents.

The Winter 2024/2025 High Pollution Advisory Program has concluded, marking a transition to spring and summer air quality monitoring priorities[3]. Residents interested in tracking Denver's air quality can view real-time data and forecasts through the Colorado Department of Public Health and Environment's air quality websites.

For those planning outdoor activities today in Denver, conditions appear favorable with good air quality and comfortable temperatures.

Denver's Air Quality Update: May 3, 2025

Today's air quality in Denver presents a mixed picture for residents and visitors. The current Air Quality Index (AQI) shows varying assessments across different monitoring sources. While some reports indicate a "Good" level with an AQI of 26, featuring low levels of particulate matter, other forecasts suggest "Poor" conditions that may affect sensitive groups[4][5].

The Front Range Air Quality Forecast from the Colorado Department of Public Health and Environment recently reported that ozone concentrations were in the Moderate range with an AQI value of 74 as of Friday evening[2]. This indicates acceptable air quality for most people, though unusually sensitive individuals may experience respiratory effects.

For today, May 3, forecasts suggest continuing "Poor" air quality conditions, meaning the air has reached a level of pollution that could be unhealthy for sensitive groups[5]. Those with respiratory conditions, the elderly, and young children should consider reducing time spent outdoors, especially if experiencing symptoms like difficulty breathing or throat irritation.

Fine particulate matter readings are expected to change throughout the day, with some fluctuation anticipated in the coming hours[1]. The air quality situation reflects typical spring patterns for Denver, where changing weather conditions can quickly alter pollution levels.

The Colorado air quality monitoring system continues to track multiple pollutants including ozone, fine particulate matter, carbon monoxide, and nitrogen dioxide across the Denver metro area[2][3]. This comprehensive monitoring helps authorities issue timely advisories when needed.

For those planning outdoor activities today, it's advisable to check real-time air quality updates and consider scheduling strenuous activities during periods of better air quality. While most residents won't experience significant health effects, those with pre-existing conditions should remain cautious and follow recommended health guidelines during periods of elevated pollution.

Today in Denver, the air quality is rated as poor, with an Air Quality Index value around 61. This level falls into the range considered unhealthy for sensitive groups, such as children, older adults, and people with respiratory conditions. Residents are advised to limit prolonged outdoor exertion, especially if they experience symptoms like coughing, throat irritation, or difficulty breathing.

The main pollutant of concern today is ozone. Ozone at ground level can cause acute respiratory problems and trigger asthma attacks. Prolonged exposure during poor air quality periods may lead to long-term lung damage. Experts recommend avoiding vigorous outdoor activity during the hottest part of the day when ozone levels tend to peak.

There are currently no mandatory air quality advisories or restrictions in place, meaning open burning and driving are not restricted at this time. However, voluntary efforts to reduce car trips and limit other emissions are encouraged to help improve air conditions. Even small changes, like combining errands or postponing unnecessary driving, can contribute to better air for everyone along Denver’s Front Range.

Real-time reports indicate that conditions are expected to remain similar throughout the day. Those who are unusually sensitive to air pollution should continue monitoring symptoms and minimize time outside when possible. Updates and more personalized recommendations can be found on state and national air quality websites.

Today’s conditions serve as a reminder of the persistent air pollution challenges in Denver, particularly during warmer months when ozone levels can rise. Monitoring local forecasts and taking voluntary steps to reduce emissions are effective ways everyone can help promote cleaner, healthier air for the Denver community[1][2][4][5].

Today in Denver, air quality is being impacted by elevated levels of air pollution. Measurements from the Colorado Department of Public Health and Environment indicate that the Air Quality Index is in the moderate to poor range across the metro area, with values around 49 to 63 for key pollutants like ozone and particulate matter less than 10 micrometers in diameter. These levels mean that while the air is generally safe for most people, unusually sensitive individuals—such as those with asthma, respiratory conditions, or cardiovascular issues—may begin to experience mild symptoms like breathing discomfort or throat irritation.

Ozone, a common pollution concern in the Denver region, is currently reported at moderate levels. Real-time updates confirm that the maximum AQI value for ozone earlier in the day reached 51, which fits the moderate category. In this range, most people can carry on with normal outdoor activities, but those who are unusually sensitive should consider limiting prolonged or intense physical exertion outdoors.

Other key pollutants, including fine particulate matter, are also present at moderate concentrations. Recent readings for particulate matter less than 10 micrometers (PM10) were about 63 on the AQI scale and measured at 79 micrograms per cubic meter. While this is not considered dangerous for healthy adults, sensitive groups are again encouraged to be cautious, especially if symptoms like coughing, shortness of breath, or throat irritation arise.

No official air quality advisories or pollution alerts are currently in effect for Denver and the broader Front Range Urban Corridor. The air quality is expected to remain in the moderate range throughout the day. As always, residents and visitors are encouraged to monitor symptoms and reduce outdoor activity if sensitive to air pollution. Conditions can shift with weather changes, traffic, and other urban activity, so keeping an eye on local air quality reports is recommended for those at higher risk.

Denver’s air quality today is rated as poor, with elevated pollution levels making conditions potentially unhealthy for sensitive groups such as children, the elderly, and those with respiratory issues. The main concern is particulate matter under 10 micrometers in diameter, which reached a maximum AQI reading of 63 in the early morning hours. This falls within the moderate to poor range, meaning while the general population is not likely to be affected, people in sensitive groups may experience symptoms like difficulty breathing or throat irritation. Residents are advised to limit prolonged outdoor exertion if they are susceptible to these effects, especially during periods when pollution levels are at their peak.

No official air quality advisories have been issued for the Denver metro area, and other pollutants such as ozone and nitrogen dioxide currently remain well within the good range. Ozone readings were last measured at an AQI of 37, which is categorized as good. However, localized pollution levels, particularly for particulate matter, can fluctuate throughout the day, especially near traffic corridors or during inversions.

The Colorado Department of Public Health and Environment notes that no alerts are currently in effect, but encourages monitoring for any symptoms in sensitive groups. Looking ahead to the next few days, the forecast predicts continued poor air quality, so it will be important to stay informed of changing conditions if you have plans for outdoor activities. Overall, while most residents can go about their routines as usual, those who are particularly sensitive to air quality should take precautions when spending time outdoors today. The next ozone alert season starts in June, so for now, particulate pollution remains the most significant concern for Denver’s air quality. [1][2][3]

As of April 15, 2025, air quality in Denver is classified as "Moderate" with an Air Quality Index (AQI) of 54. This means air quality is generally acceptable for most individuals, though sensitive groups—such as those with respiratory conditions or children—may experience minor health effects. The main pollutant contributing to today’s moderate level is ground-level ozone, a persistent issue in Denver, especially during warmer months.

Ground-level ozone forms when emissions from vehicles and industrial processes react with sunlight. Denver’s geographical location at the base of the Rocky Mountains often traps air pollutants due to temperature inversions, where warm air above cooler air prevents pollutants from dispersing. This can exacerbate ozone levels and create visibility concerns, commonly seen as a hazy layer over the city.

Ozone levels today are forecast to remain within the higher end of the "Moderate" range, particularly during the afternoon when sunlight and temperature peaks intensify chemical reactions forming ozone. Sensitive individuals are advised to limit prolonged outdoor activities during the late afternoon and early evening hours.

Other pollutants, including fine particulate matter (PM2.5) and nitrogen dioxide, are currently within the "Good" range, indicating minimal health risks from these factors. However, Denver's broader air quality struggles with consistent ozone issues have placed it among the top cities in the U.S. for ozone pollution, as highlighted in recent air quality reports.

While no air quality advisories are active today, residents can contribute to improved air quality by reducing vehicle emissions and avoiding activities like open burning. Denver's regional and state initiatives continue to focus on improving air quality and addressing the challenges posed by ozone pollution.

Today, Denver’s air quality is rated as "Moderate" with an Air Quality Index (AQI) of 87, primarily influenced by elevated ozone levels. This AQI level means the air is generally acceptable for most people, but individuals who are unusually sensitive to pollution might experience mild respiratory irritation and should consider limiting prolonged outdoor activities. Ozone concentrations, a key pollutant in Denver, are reported at 66 parts per billion (ppb) for an 8-hour average, which is just below the Environmental Protection Agency's stricter standard of 70 ppb for air quality compliance.

Denver’s location at the foothills of the Rocky Mountains creates unique challenges for air quality, especially in warm weather. Airflow patterns sometimes trap pollutants in the region, contributing to ozone formation. Ground-level ozone forms when pollutants like nitrogen dioxide and hydrocarbons from vehicles and industrial sources react with sunlight and heat. This leads to the creation of smog, which is harmful to breathe and exacerbates conditions like asthma and bronchitis.

Historically, Denver has struggled with air quality issues, earning the nickname "Brown Cloud" during the 1970s and 1980s due to high pollution levels. While advancements in vehicle technology and stricter emission controls have reduced many pollutants, ozone remains a persistent problem. The American Lung Association ranks Denver among the most ozone-polluted cities in the United States.

For individuals in Denver today, especially those with respiratory conditions, it is advisable to avoid strenuous outdoor activities during the afternoon, when ozone levels peak due to sunlight and temperature. Remaining indoors or in well-filtered spaces can help mitigate exposure. Denver residents also contribute to improving air quality by using public transportation or combining errands to reduce vehicle emissions.