I think it's a combination of what you're used to and where you are in the disease progression, and some of it is just you. Weather in all of its forms affects all of us more or less. Some of us really find heat and humidity very difficult to deal with and others do just fine in that but react really badly to cold. I also think that the older you are makes a difference. The older I get, the more I see that I'm reacting to both heat and humidity and to cold, where 10 years ago, I didn't react to either nearly as badly. To some extent where you are in the disease progression also makes a difference. And the fact that we're having more extremes in weather patterns doesn't help. I don't know of any place that's a good place for all of us, though I do know that some folks have found places that seem to work well for them. It's pretty individual and you have to try things out before you up and move.

yes it seems the great lakes air varies from hour to hour,in summer there is a jet stream starts in gulf coast and goes all the way to great lakes,they call it tornado alley;Fortunately ontario has a great web sit ^air quality ontario that gives an hourly data on air quality,the ozone fine particulate matte and sulfer dioxide'Beleive me it does make a difference to everyone,the reason i feel it more is lung capacity 20% so concentration is more because less area,its like putting a teaspoon of salt in a quart of water,then putting the same amount in a pint,you can taste it in quart but pint is really salty.The same for your lungs if you still have 60% you have more volume for air and pollutants to mix,where as at 20% it more condenced and when it passes from your lungs into blood stream you get full dose.

I know from my experience, the heat and humidity affect my breathing. I tend to have to stay inside

Dr Jean says it all. We are all effected differently by the temp and humidity, just have to find out what works best for you. Hope we can all find that zone that provides us the most relief good luck with that.. breathe easy

Hawaii is the best place for people with COPD because there is no humidity and the temperature stays in the low 80's with breeze so they don't get air pollution like most cities do. But it is very expensive to live there.