San Francisco’s air quality is generally rated “good,” meaning that the air poses little risk to health. Read the air pollution in Mission Street, San Francisco with AirVisual. (2020). Wildfires in the Bay Area have been growing in size and frequency over the last two decades. Ces données sont basées sur les perceptions des visiteurs de ce site au cours des 3 dernières années. (2020, August 25). We have updated our Privacy Policy and Cookie Policy. [7] SF Environment - Clean Fuels and Vehicles. Track air pollution now to help plan your day and make healthier lifestyle decisions. More frequent and excessive exposure can result in more serious health effects. While transportation emissions are a constant source of air pollution, wildfires are generally the reason for extreme air quality events, and as such it is often during these time periods that the air quality becomes labelled as unhealthy or hazardous to breathe. Our air quality map displays the current air quality across a particular area. In the case of San Francisco, waters from the Pacific Ocean are cold and reduce ground temperatures in surrounding areas. The information associated with the air quality maps are as real-time as possible and are displayed as soon as practical upon transmission to us, including current index, forecast, daily and hourly air quality data. Primary factors for elevated pollution levels in the Bay Area include transportation emissions from cars, trucks, planes, and ships as well as seasonal wildfires. Other issues related to the breathing of burnt organic matter can include permanent reduction in lung capacity, which has the ability to stunt growth in young children as well as causing cognitive defects. In 2019, for example, San Francisco experienced a 43.7% decrease in PM2.5 levels from the year prior, though this reduction is attributed largely to the reduction in severe wildfires and not from emission reductions from other sources. Follow recommendations for the "Hazardous category." Our air quality forecast chart breaks down the quality of the air on an hour-by-hour scale, allowing you to visualize the trends in air quality and plan your outdoor activities. The Hunters Point and Potrero Hill power plants were closed in 2006 and 2010 respectively, while other industrial businesses have since moved out of the city. However, sensitive groups may experience minor to moderate symptoms from long-term exposure. The raw measurements are then converted by Plume Labs into values comprising the Air Quality Index (AQI), using standards and guidelines developed by the Environmental Protection Agency (EPA) and the World Health Organization (WHO), among other scientific studies by Plume Labs. However, despite this there has not been a significant increase in days classified as having good ratings (US AQI 0-50).5, This is because whilst pollution levels on average have decreased, peaks into “moderate” air quality levels are still common. Healthy individuals are likely to experience difficulty breathing and throat irritation; consider staying indoors and rescheduling outdoor activities. Localized Air Quality Index and forecast for San Fernando Valley, CA. SAN FRANCISCO (CBS SF) — There is plenty of confusion when it comes to Air Quality Index readings during this time of smoke-filled skies from the historic outbreak of wildfires. Furthermore, during instances of higher pollution levels, either due to vehicular activity or the occurrence of a forest fire (or a combination of both), pollution levels can quickly climb to the point where they become to have the potential to cause several negative effects upon inhalation. Localized Air Quality Index and forecast for South San Francisco, CA. Find out more about contributors and data sources, Bay Area Air Quality Management District (BAAQMD), Close your windows to avoid dirty outdoor air, Sensitive groups should reduce outdoor exercise. An AQI value of 50 or below represents good air quality, over 150 is unhealthy, over 200 is very unhealthy and over 300 signals hazardous conditions. The fires in Northern California have made the air quality bad in the Bay Area. Without taking into account the effects of potential wildfires, winter months are commonly much more polluted than the summer season, often as a result of increased heating and wood burning taking place. 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. The City and County of San Francisco developed the Air Quality Element of the General Plan in order to improve air quality and achieve state and federal standards. Carbon Monoxide is a colorless and odorless gas and when inhaled at high levels can cause headache, nausea, dizziness, and vomiting. Any exposure to the air, even for a few minutes, can lead to serious health effects on everybody. Although AccuWeather intends to provide accurate information relating to air quality and forecasting, the data or information may not have been subject to a quality assurance review to determine their accuracy. South San Francisco: AQI (US) 14 Good, Pollen 0.7 Low. Read the air pollution in South San Francisco, California with AirVisual. Zoom in on your neighborhood to see where air quality is excellent or dangerous or zoom out to see air quality across the world. Interested in hourly forecast? Mission Street Air Quality Index (AQI) is now Moderate. The 2020 August Complex fire burned for more than 55 days, surpassing a million scorched acres and becoming the largest fire in California history.9 During this period, San Francisco air quality levels reached “unhealthy” or worse levels for more than 10 combined days. These temperatures are often significantly colder than the winds moving over the region from inland locations. 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