Air quality API examples & templates

easyAQI Get the Air Quality Index (AQI) for a location via open data sources. It's "easy" because it strings together multiple lower-level APIs to give you a simple interface for AQI. Accepts a location in basically any string format (ie "downtown manhattan") Uses Nominatim to turn that into longitude and latitude Finds the closest sensor to you on OpenAQ Pulls the readings from OpenAQ Calculates the AQI via EPA's NowCAST algorithm Uses EPA's ranking to classify the severity of the score (ie "Unhealthy for Sensitive Groups") It uses blob storage to cache the openai location id for your location string to skip a couple steps for the next time. Example usage @stevekrouse.easyAQI({ location: "brooklyn navy yard" }) // Returns { "aqi": 23.6, "severity": "Good" } Forkable example: val.town/v/stevekrouse.easyAQIExample Also useful for getting alerts when the AQI is unhealthy near you: https://www.val.town/v/stevekrouse.aqi

// Forked from @stevekrouse.aqi

easyAQI Get the Air Quality Index (AQI) for a location via open data sources. It's "easy" because it strings together multiple lower-level APIs to give you a simple interface for AQI. Accepts a location in basically any string format (ie "downtown manhattan") Uses Nominatim to turn that into longitude and latitude Finds the closest sensor to you on OpenAQ Pulls the readings from OpenAQ Calculates the AQI via EPA's NowCAST algorithm Uses EPA's ranking to classify the severity of the score (ie "Unhealthy for Sensitive Groups") Example usage @stevekrouse.easyAQI({ location: "brooklyn navy yard" }) // Returns { "aqi": 23.6, "severity": "Good" } Forkable example: val.town/v/stevekrouse.easyAQIExample Also useful for getting alerts when the AQI is unhealthy near you: https://www.val.town/v/stevekrouse.aqi

An interactive, runnable TypeScript val by logan

Air Quality Index in Natick, Mass.

US EPA Particulate Matter NowCast AQI (Air Quality Index) Algorithm The US EPA generally uses 24 hours periods of data to calculate AQI. To calculate AQI at an hourly scale the NowCast algorithm is a more appropriate choice Algorithm explained more fully at: https://observablehq.com/@openaq/epa-pm-nowcast inputs an array of measurements values of particulate matter returns an NowCast air quality index number between 0-500 0 to 50 Good 51 to 100 Moderate 101 to 150 Unhealthy for Sensitive Groups 151 to 200 Unhealthy 201 to 300 Very Unhealthy 301 to 500 Hazardous

AQI Alerts Get email alerts when AQI is unhealthy near you. Set up Click Fork Change location (Line 4) to describe your location. It accepts fairly flexible English descriptions which it turns into locations via nominatim's geocoder API . Click Run Background This val uses nominatim's geocoder to get your lat, lon, and air quality data from OpenAQ. It uses EPA's NowCast AQI Index calculation and severity levels. Learn more: https://www.val.town/v/stevekrouse.easyAQI

US EPA Particulate Matter NowCast AQI (Air Quality Index) Algorithm The US EPA generally uses 24 hours periods of data to calculate AQI. To calculate AQI at an hourly scale the NowCast algorithm is a more appropriate choice Algorithm explained more fully at: https://observablehq.com/@openaq/epa-pm-nowcast inputs an array of measurements values of particulate matter returns an NowCast air quality index number between 0-500 0 to 50 Good 51 to 100 Moderate 101 to 150 Unhealthy for Sensitive Groups 151 to 200 Unhealthy 201 to 300 Very Unhealthy 301 to 500 Hazardous

easyAQI Get the Air Quality Index (AQI) for a location via open data sources. It's "easy" because it strings together multiple lower-level APIs to give you a simple interface for AQI. Accepts a location in basically any string format (ie "downtown manhattan") Uses Nominatim to turn that into longitude and latitude Finds the closest sensor to you on OpenAQ Pulls the readings from OpenAQ Calculates the AQI via EPA's NowCAST algorithm Uses EPA's ranking to classify the severity of the score (ie "Unhealthy for Sensitive Groups") It uses blob storage to cache the openai location id for your location string to skip a couple steps for the next time. Example usage @stevekrouse.easyAQI({ location: "brooklyn navy yard" }) // Returns { "aqi": 23.6, "severity": "Good" } Forkable example: val.town/v/stevekrouse.easyAQIExample Also useful for getting alerts when the AQI is unhealthy near you: https://www.val.town/v/stevekrouse.aqi

# Email alerts when air is unhealthy near you

// # Email alerts when air is unhealthy near you

AQI Alerts Get email alerts when AQI is unhealthy near you. This val uses nominatim's geocoder to get your lat, lon, and air quality data from OpenAQ. It uses EPA's NowCast AQI Index calculation and severity levels. Learn more: https://www.val.town/v/stevekrouse.easyAQI

AQI Alerts Get email alerts when AQI is unhealthy near you. Set up Click Fork Change location (Line 4) to describe your location. It accepts fairly flexible English descriptions which it turns into locations via nominatim's geocoder API . Click Run Background This val uses nominatim's geocoder to get your lat, lon, and air quality data from OpenAQ. It uses EPA's NowCast AQI Index calculation and severity levels. Learn more: https://www.val.town/v/stevekrouse.easyAQI

An interactive, runnable TypeScript val by raei

AQI Alerts Get email alerts when AQI is unhealthy near you. Set up Click Fork Change location (Line 4) to describe your location. It accepts fairly flexible English descriptions which it turns into locations via nominatim's geocoder API . Click Run Background This val uses nominatim's geocoder to get your lat, lon, and air quality data from OpenAQ. It uses EPA's NowCast AQI Index calculation and severity levels. Learn more: https://www.val.town/v/stevekrouse.easyAQI

Cloned from russbiggs to learn how to use val.town US EPA Particulate Matter NowCast AQI (Air Quality Index) Algorithm The US EPA generally uses 24 hours periods of data to calculate AQI. To calculate AQI at an hourly scale the NowCast algorithm is a more appropriate choice Algorithm explained more fully at: https://observablehq.com/@openaq/epa-pm-nowcast inputs an array of measurements values of particulate matter returns an NowCast air quality index number between 0-500 0 to 50 Good 51 to 100 Moderate 101 to 150 Unhealthy for Sensitive Groups 151 to 200 Unhealthy 201 to 300 Very Unhealthy 301 to 500 Hazardous