New Carrollton Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

New Carrollton, Maryland, occupies a strategically important position within the broader Washington-Baltimore metropolitan area, a region characterized by a complex interplay of urban development and remnant agricultural landscapes. Situated in Prince George’s County, the city’s geography is relatively flat, typical of the coastal plain, with an elevation averaging around 150 feet above sea level. This low elevation contributes to a tendency for stagnant air conditions, particularly during periods of calm weather. The city lies approximately 10 miles northeast of Washington, D.C., placing it within the sphere of influence of the capital’s extensive transportation network and industrial activity. To the west, agricultural fields and rural communities gradually transition into the dense urban fabric of the metropolitan area. To the east, the Patapsco River and its tributaries offer a degree of moisture and influence local weather patterns, though their impact on air quality is generally secondary to regional pollution sources. The proximity to major highways, including Interstate 495 (the Capital Beltway) and Route 50, introduces significant vehicular emissions. While New Carrollton lacks major industrial zones within its immediate boundaries, it benefits from, and is impacted by, the broader industrial belts located further out in Prince George’s County and surrounding jurisdictions. The urban–rural gradient is relatively sharp, with the city representing a suburban node within a larger, densely populated urban corridor, amplifying the effects of regional air pollution.

New Carrollton’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions. Spring (March-May) often brings relief as increasing temperatures and more frequent rainfall help disperse pollutants, though pollen levels can significantly impact respiratory health. Summer (June-August) presents a mixed picture. While generally warmer, periods of stagnant high-pressure systems can lead to temperature inversions, trapping pollutants near the ground and exacerbating air quality concerns. These inversions are more common in July and August. Autumn (September-November) often sees a gradual improvement in air quality as temperatures cool and wind patterns become more variable, though leaf burn restrictions can occasionally introduce localized smoke. Winter (December-February) typically poses the greatest challenge. Cold, stable air masses frequently settle over the region, creating conditions ripe for temperature inversions and trapping emissions from vehicles, heating systems, and nearby industrial sources. Fog, common during these months, further reduces visibility and concentrates pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions like asthma, should exercise caution during winter months and on days with stagnant air. Limiting outdoor exertion during peak pollution periods and ensuring proper ventilation in homes are advisable. The interplay of these seasonal factors dictates the overall air quality profile, with winter generally presenting the most significant challenges and spring offering the most favorable conditions.