diciembre 26, 2020

AirNow is your one-stop source for air quality data. Historical San Francisco - CA PM10, PM2.5, TSP, carbon monoxide, sulfur dioxide, nitrogen dioxide, ozone information also included. (2020, August 25). Despite significant improvements, air quality in the San Francisco Bay Area has breached federal standards over its 24-hour readings of PM2.5 since 2017. The good air quality rating in San Francisco can be attributed to the city’s coastal location, as well as its natural topography and having a sparse level of factories and other industrial production plants around the city limits. A growing population, congested roads, and new construction sites have also contributed to heightened ambient particle pollution in the Bay Area, with construction sites in particular being somewhat of a ‘silent’ pollution source, responsible for releasing into the air matter such as micro plastics, super finely ground dusts such as concrete and silica, as well as releasing metals such as lead into the atmosphere, particularly when they are poorly maintained or covered during the construction process. When wildfires are burning, air quality can be fast changing, changing from “good” to “unhealthy” based on wind and weather conditions. (2020). San Francisco’s air quality is generally rated “good,” meaning that the air poses little risk to health. California fire is now a 'gigafire,' a rare designation for a blaze that burns at least a million acres. Localized Air Quality Index and forecast for San Francisco, CA. Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air. (2020). This website is historical material reflecting the AirNow website as it existed on April 15, 2020. Realtime broadcasting air quality information on your phone for more than 180 countries. Read the air pollution in San Francisco, California with AirVisual. Increasingly tight regulations against industrial activity and related emission sources are to credit. AQI: Unhealthy (151 - 200) The plan targets: The Plan’s multi-pronged approach includes initiatives such as improving the accessibility and attractiveness of pedestrian/bike lanes, incentivizing the use and subsidization of electric vehicles, city planning for reduced traffic, and enforcement of over-polluting industries, among others. San Francisco air quality index is 37, ranked #273 in California. Air pollution in San Francisco comes primarily from transportation emissions, namely vehicles such as cars, motorbikes and trucks, as well as planes, and ships all contributing to the ambient levels of air pollution.1 Wildfires, which are becoming increasingly common in the Bay Area, give rise to drastic spikes of air pollution, usually occurring during summer and fall. (2020). 2018 experienced severe wildfires, and thus experienced a 26% increase in PM2.5 over the course of a year from 2017. This hourly ranking includes 2347 USA cities with PM2.5 AQI. Read the air pollution in San Francisco, San Francisco with AirVisual. These improvements have largely been driven by cleaner transportation options (such as a gradual transition towards electric and hybrid vehicles), tighter regulatory controls on industry, and increasingly stringent local and state regulations on emissions ranging from domestic wood burning to port activity, with governing bodies such as the Bay area air quality management district contributing with its own initiatives and protocols. AQI: Unhealthy (151 - 200) Whilst the quality of air in the Bay Area is of relatively good quality in comparison to global locations, and San Francisco’s annual (2019) PM2.5 level of 7.1 μg/m3 achieves the World Health Organisation’s target level of 10 μg/m3, the WHO emphasizes that even at low levels, there is no known “safe” limit for particle pollution below which no negative health impacts may be observed. This interactive map shows air quality data for the Bay Area and California, updated every 10 minutes. Therefore, it is in the interests of San Francisco and Bay Area residents to minimize both air pollution emissions, and human exposure to the the present air pollution, as much as possible. GOOD air quality index in South San Francisco, CA, USA.No health implications, enjoy all out door activities. San Francisco Air Quality Index (AQI) is now Moderate. San Francisco County: AQI (US) 46 Good, Pollen 1.9 Low. Wildfires are a significantly more difficult emission source to regulate, particularly in a warming climate. Heavy smoke from nearby wild fires covers the Golden Gate Bridge and San Francisco on August 20, 2020 as seen from the Marin Headlands in Sausalito, California. The month with the cleanest quality of air during 2019 was February, averaging a very low PM2.5 reading of 3.4 μg/m3. 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