When it rains it always clears any bad air quality out of the atmosphere where I live. So I always look forward to when it rains for this very reason. During and after a massive rain storm the air quality is just super great! It does not matter what time of the year it. It could be winter, spring, summer or even the fall. When it rains the air quality is super wonderful! When this happens I love to be able to open up the windows in my home and let all that nice air quality in. Because after a few days following the rain the air quality could get quite bad and then I have no choice but to have to go to my thermostat and turn on my whole home air purification system. But having a whole home air purification system is nice because it can really help retain all that great air quality you let in after the rain when you had the windows open. So you have a mixture of the air purification type air quality as well as the natural and most positive air quality coming from mother nature all flowing throughout your home. That is what I like best about the rain and the good air quality mixed with the punch of my whole home air purification system which is good when things start to get bad and you have to close up all the windows again. It was an investment and not something everyone could afford to have, but I am very lucky that I could and do not take it for granted!