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China

The Beautiful and Sustainable Cities Index - Air Quality

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Percentage of Days with Good Air Quality

  1. PM2.5 Average Concentration over the past 12 months

  2. PM2.5 Ranking over the past 12 months

    -

Air Quality Calendar
2025-09

S

M

T

W

T

F

S

    1. Good
    2. Moderate
    3. Unhealthy for Sensitive
    4. Unhealthy
    5. Very
    6. Hazardous
    7. Beyond Index

    Air Quality Ranking

    By Year
    1. 2025
    2. 2024
    3. 2023
    4. 2022
    5. 2021
    6. 2020
    7. 2019
    8. 2018
    9. 2017
    10. 2016
    11. 2015
    12. 2014
    By Month
    1. 2025
    2. 2024
    3. 2023
    4. 2022
    5. 2021
    6. 2020
    7. 2019
    8. 2018
    9. 2017
    10. 2016
    11. 2015
    12. 2014
    1. 12
    2. 11
    3. 10
    4. 9
    5. 8
    6. 7
    7. 6
    8. 5
    9. 4
    10. 3
    11. 2
    12. 1
    PM2.5
    1. PM2.5 (ug/m3
    2. PM10 (ug/m3
    3. O3 (ug/m3
    4. SO2 (ug/m3
    5. NO2 (ug/m3
    6. CO (mg/m3

    Air Quality Calendar

    PM2.5 Concentration Performance among Cities (2025/8)

    Air Quality Statistics

    • PM2.5
    • PM10
    • O3
    • SO2
    • NO2
    • CO

    Good and Moderate Days

    Number of Day of Unhealthy and beyond

    Air Quality Level

    • Good
    • Moderate
    • Unhealthy for Sensitive
    • Unhealthy
    • Very Unhealthy
    • Hazardous

    Note: The city-level air quality statistics are derived from daily average data published by the national environmental monitoring network. Days affected by dust storms have been partially excluded based on reference criteria for dust removal. These figures have not undergone official validation and are for reference only. For accurate statistics, please refer to official data released by the ecological and environmental authorities.

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