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  • LA AIR QUALITY MOSTLY GOOD TO MODERATE TODAY

    LA AIR QUALITY MOSTLY GOOD TO MODERATE TODAY
    2025/09/13
    Today’s air quality in Los Angeles is generally good to moderate, with most regions experiencing clean air and some areas reporting only slightly elevated levels of particulate matter and ozone. The official forecast shows Air Quality Index values ranging from 39 to 58 across the city, indicating good to moderate conditions depending on the location and time of day. Central Los Angeles County, East San Fernando Valley, and East San Gabriel Valley show moderate air quality with AQI values between 53 and 58, primarily due to fine particulate matter (PM2.5) and ozone levels, while coastal and western areas report AQI values near 39, considered good and safe for outdoor activity[2].

    Throughout 2025, Los Angeles air quality has shown improvement when compared to previous years. The yearly average AQI so far stands at 46, which is the lowest and therefore best of the past six years. More than two-thirds of this year’s days have had air quality below the World Health Organization’s recommended limit, although about a third of the days have exceeded it, especially during wildfire events or high ozone periods. Today’s readings reflect this positive trend, with cleanest levels observed in the early morning and late evening hours[1].

    Despite these improvements, residents with pre-existing respiratory or heart conditions are still advised to take precautions during times when the AQI approaches the moderate threshold. Official health guidance recommends limiting strenuous outdoor activities, especially in areas and times of day where PM2.5 or ozone readings are higher. Typical seasonal patterns include slightly higher air pollution from midday into the early evening, coinciding with increased traffic and sun-induced ozone formation.

    Recent UCLA-led research confirms that local wildfires, such as those in January 2025, can significantly worsen air pollution and cause localized hazardous AQI spikes. However, these events have been rare this year and do not currently impact today’s forecast[3][4].

    Overall, Los Angeles air quality today is suitable for most people to enjoy outdoor activities, with only minor precautions necessary for sensitive groups.

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    3 分
  • Moderate Air Quality Persists Across Los Angeles, Some Elevated Ozone in East San Gabriel Valley

    Moderate Air Quality Persists Across Los Angeles, Some Elevated Ozone in East San Gabriel Valley
    2025/09/09
    Air quality in Los Angeles today is mostly in the moderate range, with the primary pollutant being fine particulate matter, known as PM2.5. In central Los Angeles County, the Air Quality Index, or AQI, is measured at 58, which is classified as moderate, meaning air quality is acceptable but there may be some risk for people who are unusually sensitive to air pollution. Northwest coastal and southwest Los Angeles County also report moderate AQI levels at 58 and 56, respectively. South and southeast Los Angeles County show similar AQI numbers, all in the mid-50s. This trend of moderate air quality holds across large urban and suburban sections of the county throughout the day.

    The West and East San Fernando Valley and the West San Gabriel Valley also experience moderate air quality, with AQI levels between 53 and 77. The East San Gabriel Valley, however, reaches an AQI of 101 for ozone, which is considered unhealthy for sensitive groups. Individuals with respiratory conditions, young children, and older adults in that area are advised to limit prolonged or heavy outdoor exertion.

    Historical air quality data from this month indicates an improvement compared to previous years, with the AQI trending lower, suggesting cleaner air than in the recent past. Over the last 24 hours, Los Angeles's AQI varied from a low of 43 during the early morning to a high of 60 in the evening, both readings remaining within the moderate range.

    No major spikes in pollution or hazard alerts have been issued. Residents are encouraged to follow routine guidelines, such as staying indoors during peak pollution hours if sensitive, but for the average person, outdoor activity remains generally safe in most areas of Los Angeles today[1][2].

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    2 分
  • Moderate Air Quality in Los Angeles, but Wildfire Smoke Concerns Persist

    Moderate Air Quality in Los Angeles, but Wildfire Smoke Concerns Persist
    2025/09/06
    Today’s air quality in Los Angeles is classified as moderate, according to the official forecast from the South Coast Air Quality Management District. Across central, coastal, valley, and surrounding areas, the Air Quality Index readings range from the low 50s to low 90s, with most locations measuring between 53 and 67. This means particulate matter, especially fine particles known as PM2.5 and ozone, are the primary pollutants and are expected to remain at similar levels throughout the day.

    A moderate AQI indicates that air pollution levels are acceptable for the general public, but there may be a minor concern for people who are unusually sensitive to air pollution. For most individuals, outdoor activities can continue as usual. However, sensitive groups such as children, seniors, and individuals with respiratory or heart conditions may consider limiting prolonged exertion outdoors.

    Smoke and ash from ongoing wildfires in Southern California, including the Rosa, Gifford, and Gold fires, have contributed to a dusty haze across the region. These fires elevate PM2.5 concentrations, which are fine inhalable particles that can penetrate deep into the lungs and may carry toxic compounds. Health experts note that exposure can aggravate respiratory and cardiovascular conditions, producing symptoms like wheezing, cough, throat pain, or eye irritation, particularly in sensitive individuals.

    Residents are advised to monitor any changes in local conditions and follow health recommendations. Keeping windows closed, running air conditioning on recirculation, and using air purifiers can help reduce indoor exposure to wildfire smoke. For those who must go outside, wearing an N95 mask provides some protection against fine particulate matter.

    Despite the wildfire impacts, Los Angeles’s average air quality in 2025 is improved compared to recent years, with a downward trend in the region’s annual AQI. This reflects broader air quality gains, although wildfire seasons can still produce short-term spikes and localized warnings.

    The smoke advisory remains in effect, and residents should remain alert to updates from local health and air quality agencies as the wildfire situation evolves.

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    3 分
  • LA Sees Excellent Air Quality with Minimal Pollution Levels

    LA Sees Excellent Air Quality with Minimal Pollution Levels
    2025/08/30
    Today's air quality in Los Angeles is classified as Good, with the Air Quality Index measured at 40. This rating falls well within the lowest category for pollution, indicating that air pollution poses minimal or no risk to the general population. The primary pollutants tracked today include particulate matter PM2.5 at 8 micrograms per cubic meter and PM10 at 27 micrograms per cubic meter, both considerably below levels considered moderate or unhealthy. Nitrogen dioxide is present at 10 parts per billion, and ozone levels are at 38 parts per billion, also within safe ranges. Carbon monoxide and sulfur dioxide are nearly undetectable.

    Weather conditions are favorable for maintaining clear air, with local temperatures around 27 degrees Celsius. Humidity is low at 33 percent, and a light wind blowing at 6 kilometers per hour helps prevent the buildup of pollutants.

    This consistently good air quality follows a trend seen over the past several days, attributable in part to mild weather, low emissions, and a lack of wildfire activity in the region. Los Angeles typically experiences fluctuating air quality related to factors such as traffic emissions, industrial activities, and seasonal changes, but today is notable for its clean atmospheric conditions.

    Residents and visitors in Los Angeles can enjoy outdoor activities with minimal concern for respiratory health impacts, as there are no air quality advisories in effect. Sensitive groups, including children and the elderly, are also unlikely to experience adverse effects under these conditions. No unusual odors or visible haze have been reported.

    In summary, Los Angeles is experiencing some of the cleanest air of the season, with pollutant levels well below the thresholds set for moderate or unhealthy air. For those monitoring environmental conditions, today’s readings point to a city benefiting from improved air quality management and favorable meteorological influences. The next scheduled updates will continue to track these trends, ensuring the community remains informed if conditions change[1][5].
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    2 分
  • Moderate Air Quality in LA, Valleys See Unhealthy Conditions for Sensitive Groups

    Moderate Air Quality in LA, Valleys See Unhealthy Conditions for Sensitive Groups
    2025/08/23
    Today in Los Angeles, the air quality index is moderate, with values in most regions ranging between 53 and 56 AQI. The main pollutant contributing to this status is fine particulate matter, also known as PM2.5, which tends to remain consistent throughout the day. Central Los Angeles County and several coastal and inland areas report moderate air quality, while southwest and south coastal zones are seeing good conditions with AQI values around 44.

    In the valleys, especially the West and East San Fernando Valley as well as the San Gabriel Valley, ozone levels have pushed the AQI above 100, classifying those areas as unhealthy for sensitive groups. The cleanest air in those places tends to be found in the early morning, typically before noon. For people with asthma or other preexisting conditions, limiting strenuous outdoor activity in those areas during the afternoon is advised.

    The broader Los Angeles basin is not currently experiencing the severe smoke events linked to wildfires seen earlier this year, but continued vigilance is warranted. PM10 and PM2.5 concentrations are at moderate to good levels, with PM2.5 around 12 micrograms per cubic meter and PM10 about 44 micrograms per cubic meter. Other pollutants such as carbon monoxide, sulfur dioxide, and nitrogen dioxide remain well within safe limits.

    With temperatures forecasted to reach 33 degrees Celsius and relative humidity at 24 percent, the sunny and warm conditions may encourage more outdoor activities. However, moderate air quality means sensitive individuals should still take precautions, particularly during late afternoon hours when ozone tends to peak.

    In summary, air quality for most of Los Angeles today is acceptable for the general public, but people who are especially sensitive to air pollution, such as those with heart or lung disease, older adults, or children, should consider limiting extended time outdoors during peak hours in the valleys.
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    2 分
  • Los Angeles Experiences Mostly Moderate to Good Air Quality Across the City

    Los Angeles Experiences Mostly Moderate to Good Air Quality Across the City
    2025/08/19
    Today Los Angeles is experiencing mostly moderate to good air quality, with an Air Quality Index ranging from 50 to 97 across the city’s different regions. Central and Northwest Coastal Los Angeles County have AQI scores of 58 and 55, showing moderate levels due to fine particulate matter. Southwest and South Coastal areas are enjoying good air quality, with an AQI of 50. Southeast LA, West and East San Fernando Valley, and San Gabriel Valley regions show moderate readings, mainly from ozone and PM2.5, with East San Gabriel Valley peaking at an AQI of 97[1].

    The primary pollutants are fine particulates and ground-level ozone. PM2.5 concentrations are stable throughout the day, while ozone readings are higher in the eastern valleys. Most residents will experience clean air during outdoor activities, and sensitive groups such as people with asthma or respiratory issues may want to monitor for moderate readings, especially in East San Gabriel Valley. For context, PM2.5 levels are generally below 5 micrograms per cubic meter, and ozone slightly above 20 parts per billion, both remaining well below hazardous thresholds[2].

    The historical trends for August show Los Angeles routinely shifts between good and moderate air quality, with values peaking during afternoons and receding overnight. During this week, the AQI reached 61 at mid-afternoon, but typically stays below 60 before sunset[3].

    Weather conditions today are sunny with temperatures around 22 to 32 degrees Celsius and moderate humidity, which helps disperse pollutants. The wind speed is gentle at 9 kilometers per hour, with a UV index of 7, indicating strong sunlight which can enhance ozone formation[2].

    While air quality has improved compared to historical highs, residents in moderate AQI zones should be cautious during strenuous outdoor exercise and those in sensitive groups may wish to limit prolonged exposure during the afternoon hours. Continued monitoring using local forecasting apps or the South Coast Air Quality Management District updates is advisable for real-time information[1].
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    2 分
  • Unhealthy Air Quality Grips Los Angeles Due to Wildfire Smoke

    Unhealthy Air Quality Grips Los Angeles Due to Wildfire Smoke
    2025/08/09
    Today’s air quality in Los Angeles is classified as unhealthy, especially in the downtown and Compton areas, where EPA monitoring stations report elevated levels of fine particulate matter, known as PM2.5. These readings place air quality in the Unhealthy range, meaning that everyone may begin to experience health effects, and sensitive groups such as children, older adults, and those with respiratory or heart conditions should take extra precautions. Current conditions are influenced by recent wildfire smoke, which has raised the concentration of harmful particles across the city.

    For Los Angeles, August is historically marked by higher ozone and particulate matter levels due to summer heat and stagnant air. The average Air Quality Index for August 2025 is tracking slightly better than previous years, but today’s spike is notable and marks a potential risk for outdoor activities. Over the last 24 hours, AQI levels in Los Angeles have fluctuated, reaching unhealthy levels in the afternoon during periods of higher traffic and heat. By the early morning hours, values are often lower and may return to moderate or even good ranges before climbing again as the day progresses.

    Wildfire smoke remains a concern for the broader Southern California area, and wind shifts can rapidly change air quality conditions without much notice. Residents are advised to limit outdoor exertion, run air filtration indoors if possible, and check for real-time air quality updates before spending extended time outside. The Air Quality Alert in effect for neighboring Ventura County does not directly cover Los Angeles, but similar smoke patterns and weather conditions may impact the area intermittently.

    Overall, today’s air quality levels should prompt caution for all Angelenos, especially those in neighborhoods experiencing the brunt of wildfire-related air pollution. It is recommended to follow local advisories and stay informed about changes throughout the day.
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    2 分
  • Air Quality Varies Across Los Angeles, with Moderate to Good Conditions Reported

    Air Quality Varies Across Los Angeles, with Moderate to Good Conditions Reported
    2025/08/02
    Today’s air quality in Los Angeles varies by region, with much of the county experiencing moderate conditions. Central Los Angeles County has an Air Quality Index of 56, categorized as moderate, mainly due to PM2.5 particles. Northwest and Southeast Los Angeles County also report moderate air quality, with AQI values of 55 and 53 respectively, both driven by PM2.5 levels. Residents in these areas can generally go about their daily activities but may consider limiting prolonged outdoor exertion, especially those with pre-existing respiratory conditions[1].

    Some areas are enjoying better conditions. Southwest and South Coastal Los Angeles County both have good air quality today, with AQI levels at 50 and 44, respectively. This indicates that the air is generally clean, and there is minimal risk from exposure to air pollution[1].

    There are zones with elevated health concerns, particularly the East San Gabriel Valley, where the AQI has reached 115. This is classified as unhealthy for sensitive groups due to elevated ozone concentrations. Children, elderly adults, and anyone with respiratory or heart problems should limit outdoor activities in this area, especially during the afternoon. The cleanest air in this region is forecast between 6 PM and 10 PM, making that the best window for time spent outdoors[1].

    Air quality in the West and East San Fernando Valley and the West San Gabriel Valley also falls in the moderate range today, with AQI values from 64 to 71, attributed primarily to ozone. Residents in these valleys may notice some haze and should be aware of possible respiratory irritation, especially in the afternoon hours when ozone peaks[1].

    Overall, Los Angeles is not experiencing severe pollution today, but sensitive individuals in specific neighborhoods—particularly the eastern valleys—should take precautions against moderate to high ozone levels. For most residents, outdoor activities can continue as normal, but it is always wise to check the AQI for your neighborhood before spending extended time outdoors[1].
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    2 分