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Zhytomyr, the administrative center of Zhytomyrska Oblast in northern Ukraine, occupies a strategic position at the crossroads of major transportation routes connecting Kyiv to western Ukraine and Poland. Situated on the Teteriv River, a tributary of the Dnieper, the city lies within the forest-steppe zone of the Ukrainian Plain at an elevation of approximately 220 meters above sea level. This terrain creates a gently rolling landscape with mixed deciduous and coniferous forests to the north and agricultural plains extending southward, establishing a distinct urban–rural gradient. Zhytomyr's location in a river valley basin contributes to occasional temperature inversions that trap pollutants near ground level, particularly during calm winter conditions. While not part of Ukraine's heavy industrial heartland like the Donbas or Dnieper regions, the city hosts light manufacturing, food processing, and woodworking industries that generate localized emissions. The surrounding agricultural areas contribute seasonal particulate matter from field burning and soil dust. Proximity to major highways and railway lines adds transportation-related pollution, while the city's compact urban core with Soviet-era housing blocks creates microclimates that can concentrate vehicle emissions. The Teteriv River provides some natural ventilation but is insufficient to fully disperse pollutants during stagnant atmospheric conditions common in this continental climate region.

Zhytomyr experiences distinct seasonal air quality patterns shaped by its continental climate with cold winters and warm summers. Winter months from December through February typically see the poorest air quality due to combined factors: residential heating emissions from coal and wood burning intensify as temperatures drop below freezing, while frequent temperature inversions trap pollutants in the river valley basin. These stagnant conditions, often accompanied by fog and low wind speeds, create persistent pollution episodes that can last several days. Sensitive groups like asthmatics, children, and the elderly should limit prolonged outdoor exposure during these months, particularly on calm, cold mornings. Spring brings gradual improvement as increased precipitation helps wash pollutants from the air, though March and April can experience elevated particulate levels from agricultural field preparation and occasional dust storms from dry soils. Summer offers the cleanest air overall with good atmospheric mixing, though July and August can see ozone formation during heatwaves when sunlight interacts with vehicle emissions. Autumn presents variable conditions—September typically maintains good air quality, but October and November see deterioration as heating season begins and atmospheric stability increases. For optimal outdoor activity, late spring through early autumn provides the most favorable conditions, with June and September being particularly reliable months for clean air in Zhytomyr.