I think my biggest problem is this crappy Midwest weather!
Ah, yes, the weather... Possibly harder to influence than other triggers. But all triggers are hard to influence if we don't realize their mechanisms. And it's good to have a close look at them all bit by bit and try to influence each as much as possible.
Luckily I've been able to get used to or adapt to cold/wind/sun, changing my clothing/protection and now being outdoors almost all day, regardless (from being indoors almost all day).
Having a look around what may be done about it, I spose it depends on the kinds of symptoms. Examples I saw on kaplansinusrelief were sinus headaches, mood, anxiety, stress, fatigue, lower blood pressure / dizziness / blurred vision, lower blood sugar, joint pain from less viscous joint fluid, but also from lack of sunlight during stormy weather.
That company is selling balloon sinuplasty (dilation I think that means), which reminds me of my ENT recommending lasering my sinuses so they are more "airy".
Sinus headaches are something that in my case is caused mainly by histamine (as well as my antihistamine, strangely), and I can influence it with GABA and cold showers, but maybe different/new things would be necessary for weather related ones, and if necessary would consider both of those techniques. My way of combating lack of sunlight is now to be outside anyway and stare at the sky where it is lightest many times a day (otherwise using a good daylight lamp). For the rest I'd try various kinds of exercise(s)/manual stuff and food etc. to increase all that is alack.
A different - indoors - approach would be to increase the barometric pressure in the home. sciencing describes these techniques: "Turn off exhaust fans or reduce the number of them running in the home. Exhaust fans remove air from inside the house to the outside, lowering the inside air pressure. Avoid using exhaust fans when not using the stove or bathroom or when using the dryer, which uses an exhaust fan.
Obtain or install a supply-only ventilation system. Supply-only ventilation uses a fan to force outside air into the home. The ducts channel fresh air into several rooms throughout the home. Inside air leaks through bathroom, stove and other vents.
Cool the home by running the air conditioner, opening windows on a cool day or using ceiling fans. Cool air sinks, suppressing air molecules and increasing air pressure. Warmer air rises, lowering air pressure."
Interesting, not sure how much this can really influence it, but I'd definitely be trying these and looking for other things whilst using a barometer.