Effect of temperature on oxygen content in air

High temperature weather is high pressure weather, the airflow tends to sink, and water vapor cannot be transported upward, so the air density is slightly higher, while dry weather is the opposite, and the air density is small. Therefore, the corresponding oxygen content in muggy weather may be high. The reason why you say this is because the oxygen content in the air is not necessarily so stable, but will fluctuate with the changes in forest cities during the day, so you have no accurate answer to this question.

Also, if the weather is very hot in summer, but the low pressure control area, then the air density is low, and the same air density is lower than the air with low temperature, so the oxygen content is less (unit volume).

By the way, your question is not very accurate and clear, and you can only say it from these angles.