Abstract:     In order to study the sensitivity of O₃ concentration to temperature rise under different pollution levels, we fitted the response slope (m_O3-T) of the daily maximum 8-h ozone (O₃-8 h)  to the change of the daily maximum surface air temperature (T_max), by using the data from May to September from 2018 to 2020, and then we analyzed and compared the difference of m_O3-T and ozone pollution characteristics among different types of sites.The results showed that: (1) O₃-8 h increases with T_max increasing at all sites, and the trend is most obvious in the temperature range of 24-36 ℃. (2) The highest m_O3-T is at urban sites, which reach 10.6 μg/(m³·℃). The lowest values is in the northern outer suburbs sites and the northern background sites, which are as low as 5.2 μg/(m³·℃). The suburban sites are equivalent to the urban sites. Overall, the level of m_O3-T in Beijing is similar to that of the South Coast, California in the 1990s, suggesting that the current level of O₃ pollution in Beijing may be similar to that in the South Coast, California at that time. (3) The analysis of the weekend effect shows that the weekend effect of the northern outer suburbs sites and the northern background sites are higher than that of the urban area.The weekend effect represented by m_O3-T could better reflect the differences among different regions. In general, m_O3-T can represent the characteristics of O₃ pollution and the stage of the current O₃ pollution control level in Beijing.