Bucyrus Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Bucyrus, Ohio, nestled in the heart of Crawford County, presents a compelling case study in Midwestern urban geography and its influence on air quality. Situated at approximately 40.8054° N, 82.9719° W, the city occupies a gently rolling terrain within the Till Plains region, a landscape sculpted by glacial activity during the Pleistocene epoch. The elevation averages around 988 feet (301 meters) above sea level, contributing to a relatively stable atmospheric layer, which can, at times, exacerbate pollution events. Bucyrus’s location is significant; it lies within the broader agricultural belt of Ohio, surrounded by farmland primarily dedicated to corn and soybean cultivation. This proximity to intensive agricultural practices introduces potential sources of ammonia and particulate matter, particularly during planting and harvesting seasons. While not directly adjacent to a major river, the city benefits from the presence of several smaller creeks and drainage systems, which can influence local humidity and wind patterns. The urban–rural gradient around Bucyrus is gradual, with smaller towns and agricultural fields transitioning seamlessly into the city limits. Bucyrus itself exhibits a classic small-town character, with a compact downtown area and residential neighborhoods radiating outwards. The absence of major industrial zones within the city limits is notable, though the region’s historical connection to manufacturing, particularly related to agricultural equipment, means occasional transport-related emissions are a factor. The prevailing winds generally flow from the southwest, carrying potential pollutants from larger industrial areas further west.

Bucyrus’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions. Spring, particularly March and April, often sees elevated particulate matter levels due to agricultural activities – tilling, planting, and the application of fertilizers release dust and ammonia into the atmosphere. The warming temperatures also increase volatile organic compound (VOC) emissions from vegetation. Summer months, while generally offering improved air quality due to increased convective mixing and rainfall, can occasionally experience stagnant air conditions, especially during heatwaves, leading to ozone formation. The humidity also increases, which can trap pollutants closer to the ground. Autumn, from September to November, presents a mixed picture. Harvest season continues to contribute to particulate matter, while cooler temperatures can lead to temperature inversions, trapping pollutants near the surface. These inversions are more frequent during clear, calm nights. Winter, from December to February, is often the most challenging period. Cold temperatures and frequent temperature inversions create stable atmospheric conditions, preventing the vertical dispersion of pollutants. The use of heating systems, particularly those burning fuel oil or wood, further contributes to particulate matter and carbon monoxide levels. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit prolonged outdoor exertion during these periods, especially on days with calm winds and clear skies. During spring and autumn, monitoring local weather forecasts for temperature inversion warnings is advisable. Increased awareness and responsible agricultural practices are crucial for mitigating seasonal air quality challenges.