AirVisual


The airvisual sensor platform queries the AirVisual API for air quality data. Data can be collected via latitude/longitude or by city/state/country. The resulting information creates sensors for the Air Quality Index (AQI), the human-friendly air quality level, and the main pollutant of that area. Sensors that conform to either/both the U.S. and Chinese air quality standards are created.

This platform requires an AirVisual API key, which can be obtained here. Note that the platform was designed using the “Community” package; the “Startup” and “Enterprise” package keys should continue to function, but actual results may vary (or not work at all).

The Community API key is valid for 12 months after which it will expire. You must then go back to the AirVisual website, delete your old key, create a new one following the same steps and update your configuration with the new key.

The “Community” API key is limited to 10,000 calls per month. In order to leave a buffer, the airvisual platform queries the API every 10 minutes (600 seconds) by default. Note that each item in the geographies list will consume an API call with each update.

Configuration

To enable the platform and gather data via latitude/longitude, add the following lines to your configuration.yaml file:

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY

Configuration Variables

api_key

(string)(Required)

Your AirVisual API key.

geographies

(list | map)(Optional)

A list of geographical locations to monitor

latitude

(float)(Inclusive)

The latitude of the location to monitor.

longitude

(float)(Inclusive)

The longitude of the location to monitor.

city

(string)(Inclusive)

The city to monitor.

state

(string)(Inclusive)

The state the city belongs to.

country

(string)(Inclusive)

The country the state belongs to.

Example Configurations

No explicit configuration (uses the latitude and longitude defined within configuration.yaml):

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY

Configuration using a single custom latitude and longitude:

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY
    geographies:
        latitude: 42.81212
        longitude: 108.12422

Configuration using multiple custom latitude and longitude pairs:

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY
    geographies:
        - latitude: 42.81212
          longitude: 108.12422
        - latitude: 32.87336
          longitude: -117.22743

Configuration using a single city, state, and country:

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY
    geographies:
        city: Los Angeles
        state: California
        country: USA

Determining the City/State/Country

To easily determine the proper values for a particular location, use the AirVisual region directory. Once you browse to the particular city you want, take note of the breadcrumb title, which is of the form country > state/region > city. Use this information to fill out configuration.yaml.

For example, Sao Paulo, Brazil shows a breadcrumb title of Brazil > Sao Paulo > Sao Paulo. Thus, the proper configuration would look like this:

airvisual:
    api_key: YOUR_AIRVISUAL_API_KEY
    geographies:
        city: sao-paulo
        state: sao-paulo
        country: brazil

Sensor Types

When configured, the platform will create three sensors for each air quality standard:

Air Quality Index

  • Description: This sensor displays a numeric air quality index (AQI), a metric for the overall “health” of the air.
  • Example Sensor Name: sensor.chinese_air_quality_index
  • Example Sensor Value: 32
  • Explanation:
AQI Status Description
0 - 50 Good Air quality is considered satisfactory, and air pollution poses little or no risk
51 - 100 Moderate Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution
101 - 150 Unhealthy for Sensitive Groups Members of sensitive groups may experience health effects. The general public is not likely to be affected
151 - 200 Unhealthy Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects
201 - 300 Very unhealthy Health warnings of emergency conditions. The entire population is more likely to be affected
301+ Hazardous Health alert: everyone may experience more serious health effects

Air Pollution Level

  • Description: This sensor displays the associated Status (from the above table) for the current AQI.
  • Sample Sensor Name: sensor.us_air_pollution_level
  • Example Sensor Value: Moderate

Main Pollutant

  • Description: This sensor displays the pollutant whose value is currently highest.
  • Sample Sensor Name: sensor.us_main_pollutant
  • Example Sensor Value: PM2.5
  • Explanation:
Pollutant Symbol More Info
Particulate (<= 2.5 μm) PM2.5 EPA: Particulate Matter (PM) Pollution
Particulate (<= 10 μm) PM10 EPA: Particulate Matter (PM) Pollution
Ozone O EPA: Ozone Pollution
Sulpher Dioxide SO2 EPA: Sulfur Dioxide (SO2) Pollution
Carbon Monoxide CO EPA: Carbon Monoxide (CO) Pollution in Outdoor Air