When it rains it consistently clears any bad air quality out of the atmosphere where I live, but so I consistently look forward to when it rains for this actually reason, but during and after a massive rain storm the air quality is just super great! It does not matter what time of the year it, then it could be winter, Spring, Summer or even the fall; When it rains the air quality is super appealing! When this happens I appreciate to be able to open up the windows in my household and let all that nice air quality in, but because after a few mornings following the rain the air quality could get quite bad and after that I have no choice but to have to go to my control device and turn on my whole household air purification system. But having a whole household air purification system is nice because it can entirely help retain all that good 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 and the natural and most positive air quality coming from mother nature all flowing throughout your home, however that is what I like best about the rain and the good air quality mixed with the punch of my whole household 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 most people could afford to have, although I am actually lucky that I could and do not take it for granted!