epa purpleair

AirNow Interactive Map

AirNow Interactive Map. The map includes data for air quality monitors in the U.S., Canada, and Mexico. Find U.S. Embassies and Consulates data here . All readings are preliminary, unvalidated, and subject to change. See more information about the AQI . See more information about the NowCast AQI . …

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Cleaner Indoor Air During Wildfires Challenge ... - EPA

26-05-2021 · This sensor has been extensively evaluated by EPA and other scientists for wildfire smoke. PurpleAir data is now being displayed on the AirNow Fire and Smoke Map to show smoke concentrations across the U.S. during wildfire season. This is one sensor type that can be used to evaluate the effectiveness of your prototype.

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PurpleAir Data for the Moraga Ranch Swim Club v1.3

The EPA's 'PurpleAir PM2.5 U.S. Correction and Performance During Smoke Events' Report An article describing PurpleAir's data and various conversion factors v1.3 - 9/13/2020 - added more PurpleAir Sensors - added EPA conversion v1.2 - 9/7/2020 - using 30 minute average - added percent away from 120 v1.1 - 9/4/2020 - added hourly data - added 6 ...

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Making Sense of Air Quality – The Injection

13-09-2020 · In seasons of rapidly changing air quality, the PurpleAir sensors will differ sometimes significantly from the EPA counterparts. This occurs for two reasons. First, the PurpleAir sensors deliver real-time readings of air quality. The EPA sensors transmit an average reading over the past 1 to 3 hours.

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PurpleAir Data for the Moraga Ranch Swim Club v1.3

The EPA's 'PurpleAir PM2.5 U.S. Correction and Performance During Smoke Events' Report An article describing PurpleAir's data and various conversion factors v1.3 - 9/13/2020 - added more PurpleAir Sensors - added EPA conversion v1.2 - 9/7/2020 - using 30 minute average - added percent away from 120 v1.1 - 9/4/2020 - added hourly data - added 6 ...

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PurpleAir PA-II - AQMD

PurpleAir PA-II. The PurpleAir (PA-II) Sensor is an optical particle counter. Measurements of PM 1.0, PM 2.5 & PM 10 mass concentrations are calculated from the counts. PurpleAir PA-II uses Plantower PMS5003 laser particle counter, where laser beams detect particles going past by their reflectivity. These sensors count suspended particles in ...

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PurpleAir vs. government sensors? - airquality baaqmd ...

Aug 26, 2020 · For reference, here's a screenshot of the PurpleAir numbers, which I checked are the PM2.5 EPA Air Quality Index (so scaled to 100) and averaged over an hour. Obviously there are differences in terrain, wind, etc., between sensors, but these seem wildly different. Pretty much the whole Bay Area is in the green as far the the BAAQMD goes, but PurpleAir is twice that.

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AirCare - All PurpleAir sensors on your phone : PurpleAir

My app - AirCare, has been collecting and visualising air quality for over 40 countries, and 12.000 locations around the world. 10 days ago, we added measurements from both PurpleAir and EPA into the app, so it should be super easy to find any sensor in your area. The app has a bunch more features that got developed over the years (location ...

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PurpleAir PA-II - AQMD

PurpleAir PA-II. The PurpleAir (PA-II) Sensor is an optical particle counter. Measurements of PM 1.0, PM 2.5 & PM 10 mass concentrations are calculated from the counts. PurpleAir PA-II uses Plantower PMS5003 laser particle counter, where laser beams detect particles going past by their reflectivity. These sensors count suspended particles in ...

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Airwyn - Air Quality Alerts for PurpleAir

Airwyn lets you monitor a single public PurpleAir sensor or US EPA (AirNow) sensor. You can get ongoing silent notifications, or choose to get an audible alert when air quality index (AQI) goes up or down. This can let you make important decisions for your safety and health -- like when to go inside, and when to open or close windows.

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