Which air is better in the south or the north of Xi 'an?

* * Xi The air quality in northern Angola is relatively good. From the measured data, the PM2.5 in the north of the city is the lowest, and the PM2.5 in the south of the city is the highest, indicating that the air quality in the north of the city is relatively good.

However, please note that this is only a measured data, and air quality will be affected by many factors, such as traffic conditions, industrial emissions, and domestic pollution. So the air quality in the south and north of the city may change with time. At the same time, there may be data restrictions, and air quality may change at other times or in other areas.

To sum up, according to the measured data, the air quality in the north of the city is better than that in the south. However, it should be noted that this is not an absolute situation, and air quality will change with time and place.