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Laixi occupies a distinctive position in eastern Shandong Province, situated approximately 100 kilometers northeast of Qingdao along the Jiaodong Peninsula. This prefecture-level city lies at the transitional zone between the Shandong Hills to the west and the North China Plain to the north, creating a varied topography that influences local air circulation patterns. The city's coordinates place it at moderate elevation (approximately 50-100 meters above sea level) with gently rolling terrain that slopes toward the Yellow Sea coast to the southeast. Laixi's urban core represents a typical Chinese county-level city with dense central development surrounded by expanding suburban zones that gradually blend into agricultural landscapes. The region forms part of Shandong's important agricultural belt, with significant grain production and orchard cultivation in surrounding rural areas. Proximity to major industrial centers like Qingdao and Yantai creates regional pollution transport pathways, particularly when prevailing winds carry emissions from coastal industrial zones inland. The city's location inland from the coast means it experiences less direct maritime influence than coastal cities, allowing pollutants to accumulate more readily under stagnant atmospheric conditions. Laixi's position within the broader Bohai Rim economic zone places it downstream from major industrial clusters, making it susceptible to regional haze episodes that affect much of northern China. The urban-rural gradient shows decreasing pollution levels moving outward from the city center, though agricultural burning during specific seasons can temporarily elevate particulate matter in surrounding areas.

Laixi experiences distinct seasonal air quality patterns shaped by East Asian monsoon circulation and local meteorological conditions. During winter (December-February), cold, stable atmospheric conditions frequently create temperature inversions that trap pollutants near the surface, compounded by increased residential heating emissions. This season typically sees the highest pollution concentrations, with January often being the most challenging month for air quality. Sensitive groups should limit prolonged outdoor exposure during winter haze episodes and consider indoor air purifiers. Spring (March-May) brings variable conditions—early spring still experiences occasional pollution buildup from dust storms originating in northern China, while later spring sees improving dispersion as temperatures rise and winds strengthen. Summer (June-August) offers the cleanest air overall, with the East Asian summer monsoon bringing southeasterly winds from the Yellow Sea that effectively ventilate the region. However, high humidity can occasionally combine with pollutants to create summer haze, particularly during stagnant periods between weather systems. Autumn (September-November) begins with relatively good air quality in September but gradually deteriorates as temperatures drop, heating season begins, and atmospheric stability increases. The transition months of October and November often see rapid changes between clean and polluted days depending on wind patterns. For optimal outdoor activity, late spring through early autumn provides the most consistently favorable conditions, while winter requires careful monitoring of daily air quality forecasts.