The environment itself can be the dystopian element. We often see poisoned wastelands, but consider a world that successfully geo-engineered a 'perfect' climate, but at the cost of permanent, controlled stagnation.
Weather is a state-administered product. The 'Sunshine Lottery' decides which districts get clear skies each year. The protagonist lives in a perpetually overcast sector and works in 'atmospheric nostalgia,' designing and selling virtual memories of unpredictable weather—thunderstorms, blizzards, even just a wildly windy day. The core idea is exploring how the elimination of natural chaos, of anything beyond total control, drains the soul from human experience. The conflict might arise when a real, unplanned fog rolls in, and the state declares it a terrorist act.