City comparison
New York vs Chicago air quality
Live AQI comparison between New York and Chicago. Data updates every 15 minutes.
New York and Chicago differ by 53 AQI points right now. New York has cleaner air at this moment.
What drives air quality in New York and Chicago
New York
New York air quality varies significantly between dense traffic corridors, waterfront zones, and neighborhood streets with lighter flow. Nitrogen dioxide often peaks near highways, bridges, and major bus routes, while PM2.5 reflects both local emissions and regional background transport. Building density can intensify street-level exposure in some parts of Manhattan and the Bronx.
Chicago
Chicago air quality reflects a mix of urban traffic emissions, industrial influence, and changing lake-driven meteorology. Nitrogen dioxide tends to rise near expressways and freight corridors, while particulate levels vary across neighborhoods with different land use and building density. Lake breeze boundaries can shift pollution concentrations within the metro area.
Both cities are shaped by different combinations of traffic density, terrain, weather patterns, and seasonal events, which is why the same AQI band can feel different on the ground. Checking live readings rather than relying on reputation or past visits is the most reliable way to plan travel, exercise, or outdoor time between the two.
Live AQI from Open-Meteo (CAMS). Conditions change hourly — refresh for the latest readings. South African cities may show WAQI station data on their dedicated pages.