The Keeling curve has been measuring the levels of carbon dioxide concentration in the atmosphere at Mauna Loa since the 60s, and in each decade there has been a rise. It is thought that man-made greenhouse gases cause global warming. In areas such as Hawaii, where there are less forests than in northern zones, the uptake of carbon dioxide (caused by seasonal variations) by pants is lower than in the north. More carbon dioxide is removed in the northern hemisphere than in the southern hemisphere. Therefore, it may be true that we will never see below 400 ppm carbon dioxide in this area of Hawaii.
Carbon dioxide measurements at the Mauna Loa observatory in Hawaii are forecast to soar by a record 3.1ppm this year – up from an annual average of 2.1ppm – due in large part to the cyclical El Niño weather event in the Pacific. This prediction has been made by the scientific community so I believe that it is a valid prediction.
The world is just not focused enough on the problem at hand involving global air pollution and global warming. Because of this, I don't think the air quality at Mauna Loa and other places around the world will get better in our lifetime, or any to come. The air quality will continue to get worse unless we act upon the crisis.
The atmosphere is too far gone at this point, there is no way to clean it up. Unfortunately, the best laid plans have never come to fruition and we are now forced to choke on our own filthy air. It is a shame but it is our own sad doing