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Source
Source
Release date
August 2025
More information
Region
China
Survey time period
January 2022 to August 2025
Supplementary notes
Air quality index:
0-50: Good
51-100: Moderate
101-150: Unhealthy for sensitive groups
151-200: Unhealthy
201-300: Very unhealthy
301-500: Hazardous
>500: Beyond index
According to the source, observational data are not fully verified or validated and subject to change, error and correction. Figures have been calculated based on hourly values monitored outside of the U.S. embassy in Chengdu, China.
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