Version 2

The International Air Quality API endpoints provide Plume Labs information about material in the air for any global location. Formulate a query to define geographical location and the level of pollutant detail. The Guide and Parameters pages show how to create a query. All requests return an overview of pollution levels, including air quality index values, the dominant pollutant, and a brief statement summarizing risk level and suggested precautions.

• The AccuWeather API provides subscribers access to location based weather data via a simple RESTful web interface.
• Air quality searches require a location key. Please use the Location API in order to obtain the location key for your desired location.

In addition, the premium option for the Current air quality conditions by location key endpoint and the Hourly air quality forecasts by location key endpoint provides data about each pollutant in micrograms per cubic meter of air or parts per million, index values for each pollutant, and a breakdown of:

• Fine particles, such as those found in smoke and haze, are 2.5 micrometers in diameter and smaller. These particles can be directly emitted from sources such as forest fires, or they can form when gases emitted from power plants, industries, and automobiles react in the air.
• Inhalable course particles, such as those found near roadways and dusty industries, are larger than 2.5 micrometers and smaller than 10 micrometers in diameter.

Version 1 (deprecated)

• The AccuWeather API provides subscribers access to location based weather data via a simple RESTful web interface.
• Air quality searches require a location key. Please use the Location API in order to obtain the location key for your desired location.

• AccuWeather continues to expand our air quality offerings around the world. Through our standard air quality data service, observations updated at least once per hour are available for Korea and China. The Korea air quality data is available for over 300 stations and is provided by Air Korea. In China, observations are available from over 1100 stations and the data is provided by Huafeng. Additional air quality data, as added by AccuWeather, will be made available through the standard air quality endpoints.
• As applicable, additional specialized air quality content can be made available through the premium air quality endpoints, under specific business terms.
• Where displayed, Air Korea data must be accompanied by the following messaging:
  "Copyright: Korea Environment Corporations (KECO)"
  "Possibility of error: There might be the possibility of error of real-time data due to disturbance in communications network, malfunction in measuring device, or unpredicted problem at the station area."
• The concentration of particles in the air is measured in micrograms per cubic meter (µg/m³), except for the concentration of carbon monoxide, which is measured in parts per million (ppm).
• "Inhalable course particles" such as those found near roadways and dusty industries, are larger than 2.5 micrometers and smaller than 10 micrometers in diameter.
• "Fine particles" such as those found in smoke and haze, are 2.5 micrometers in diameter and smaller. These particles can be directly emitted from sources such as forest fires, or they can form when gases emitted from power plants, industries, and automobiles react in the air.