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Rakovník, nestled in the Středočeský Kraj of the Czech Republic, occupies a strategic position within the Central Bohemian Region, approximately 50 kilometers west of Prague. The city is situated on gently rolling plains, characteristic of the Bohemian Plateau, at an elevation of around 320 meters above sea level. This relatively flat terrain, dissected by the Loděnice stream and other smaller waterways, influences local air circulation patterns. Historically, Rakovník developed as a market town and a centre for brewing, and this legacy is reflected in its compact urban form. Surrounding the city is a predominantly agricultural landscape, with extensive fields of cereals and hops – a key regional crop. To the west and south, the landscape rises towards the Brdy hills, creating a topographical barrier that can contribute to localized air stagnation. While Rakovník isn’t heavily industrialized, its proximity to the Prague metropolitan area and associated transport corridors (particularly the D5 motorway) introduces a degree of long-range pollutant transport. The urban-rural gradient is relatively sharp, with agricultural land immediately bordering the city limits. This proximity means agricultural practices, including fertilizer use and seasonal burning, can impact local air quality, particularly during calmer weather conditions. The prevailing winds, generally from the west, play a crucial role in dispersing pollutants, but can also carry them from more distant sources.

Rakovník experiences a temperate continental climate, resulting in distinct seasonal air quality patterns. Winter, from December to February, often sees the poorest air quality. Low temperatures encourage increased use of solid fuel heating – coal and wood – in residential areas, leading to elevated particulate matter (PM) concentrations. Temperature inversions, common during these months, trap pollutants near the ground, exacerbating the problem. Spring (March-May) brings gradual improvement as heating demand decreases, but agricultural activities like field preparation and fertilizer application can contribute to ammonia and dust levels. Summer (June-August) generally offers the cleanest air, aided by higher temperatures, stronger winds, and increased atmospheric mixing. However, occasional heatwaves can lead to increased ozone formation. Autumn (September-November) is a transitional period. As temperatures fall, heating use rises again, and stagnant high-pressure systems can trap pollutants. Fog, frequent in autumn mornings, can further worsen particulate matter concentrations. Sensitive individuals – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter and autumn mornings. Monitoring pollen levels is also advisable during spring. Avoiding peak heating hours and staying informed about local weather conditions are key strategies for protecting health.