Think of the AQI as a yardstick that runs from 0 to 500. The updated map is only one hour ago. On September 9, 2020, as skies above Oakland and San Francisco turned an eerie dark orange from the smoke, about 600,000 people visited the PurpleAir air quality … Everyone else, especially children, should limit outdoor exertion. Air Quality Info My top two choices for air quality: EPA airnow.gov and PurpleAir.com. The interactive, crowdsourced air quality map called Purple Air shows a wide range of air quality conditions across the Bay Area, from "good" to "unhealthy." AirNow is also running a pilot project that adds data from low-cost sensors to a fire and smoke map. According to air quality monitoring network Purple Air, Northern California’s air quality is currently the worst in the world. Discover the most accurate information on air quality today, using our air quality index map to find air quality … Here is how to protect yourself from wildfire smoke. Now the timestamp displayed shows, "Updated 9:00pm PDT, Sep 7." Here is a short summary of the sites I used around the San Francisco Bay during the Paradise Fire. Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views. SF assigned to State’s Purple Tier, will roll back many non-essential activities (November 28, 2020) Indoor dining suspended, capacity for gyms and movies reduced due to … SF health director predicts city could hit purple tier by Sunday, prompting state-mandated curfew. The map below, updated hourly, shows air quality levels across broad areas in the Bay Area. •The three Purple Air PA-II sensor nodes (two raw sensors in each node) were very reliable (data recovery was between 95 and 99% for all units tested) and were characterized by very low intra-model variability •PM 1.0 sensor data correlated very well (R2 > 0.96) with the corresponding values collected Very easy to set up, they only require a WIFI access point and a USB power supply. Purple Air’s air quality map can be found here. Before you step out, check air quality levels in your area. Localized Air Quality Index and forecast for San Francisco, CA. Saratoga-weather.org hosts a PurpleAir PA-II-SD air quality sensor on the north side of the house adjacent to the temperature/humidity sensors for our Davis Vantage Pro Plus weather station. Air Monitoring Data View current and historical air quality and weather information collected from the Air District’s air monitoring network . Air Quality Alert - Purple/Very Unhealthy ALERTSF: Air Quality-Very Unhealthy: Active youth/adults/people with heart or lung diseases should avoid prolonged outdoor exertion. More info at www.sf72.org, airnow.gov, baaqmd.gov Current and forecast air quality data for San Francisco, California This poor air quality isn't new to San Francisco. The Bay Area air district lists current and recent AQI from individual monitoring stations. Check Air Pollution Levels. Air Quality Index (AQI) sites use a map to show the AQI number for an area. 1. Where “Purple Air” is the QC’d PM2.5 ATM output from the A and B sensors. Get air quality and weather information for the Bay Area. Pollen and Air Quality forecast for San Francisco, CA with air quality index, pollutants, pollen count and pollution map from Weather Underground. AirNow is your one-stop source for air quality data. The Purple Air air-quality map on Friday Sept. 11, 2020, shows most of the west coast with hazardous levels of pollution from wildfire smoke. Everyone, especially people with medical conditions and respiratory diseases, should avoid outdoor activities if possible. A precise date stamp would be nice, however, an hour off is acceptable. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality. 3 In November 2018, the Camp fire burned 153,336 acres and drove San Francisco’s AQI for the month up to 137 (“unhealthy for sensitive groups”). If the air quality hits purple, clean air centers will be set up, focusing in areas of highest need. If levels are high, consider rescheduling your exercise for another time — pollution levels are typically highest near midday or early afternoon — or choose to exercise indoors. At purple, the air quality is very unhealthy with a range of 201 to 300, when everyone should avoid outdoor activities and stay indoors. Cities including Fairfield, San Rafael, San Francisco and Oakland were awash in purple, the color the Bay Area Air Quality Management District has chosen for "unhealthy air." Track air pollution now to help plan your day and make healthier lifestyle decisions. For example, on August 21st, when I checked these sites, the AQI given on AirNow.gov for the 94720 zip code of Berkeley was 107. Update Saturday, 10 a.m.: An interactive, crowdsourced air quality map indicates "moderate" to "unhealthy" conditions over a large swath of the Bay Area. By contrast, PurpleAir gave values that are in the 130s to 150s. The results are automatically sent to purpleair.com website for aggregation and analysis. You’ll need to zoom into the map to see the sensor reports. San Francisco’s Air Quality seems to be getting worse, current AQI is 239, purple, very unhealthy. A new report entitled, Sustainable Aviation Fuel: Greenhouse Gas Reductions from Bay Area Commercial Aircraft, commissioned by the Air District and examining the potential positive air quality effects of sustainable aviation fuel, has been released and is available on the Air District website. A group to share information and experiences with PurpleAir sensors. Plus, the air quality is based upon your current location, or your zip code. The readings below are from both sensors in the PA-II-SD sensor unit. But what does this AQI number mean and why do different sites report different numbers? San Francisco air quality is now Purple (very unhealthy). For checking your areas Air Quality, the updated UI is terrific and relatively current. 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