City comparison
New York vs Los Angeles air quality
Live AQI comparison between New York and Los Angeles. Data updates every 15 minutes.
New York and Los Angeles differ by 8 AQI points right now. Los Angeles has cleaner air at this moment.
What drives air quality in New York and Los Angeles
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.
Los Angeles
Los Angeles is shaped by basin geography, high vehicle activity, and strong sunlight, a combination that supports persistent smog dynamics. Nitrogen dioxide is elevated near freeways and major freight routes, while ozone can become the dominant afternoon pollutant across broad areas. Topographic trapping often worsens conditions inland relative to coastal zones.
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.