Yokohama Good
Yokohama, Kanagawa
Updated: Jul 10, 2026, 3:00 AM
Air quality is satisfactory, and air pollution poses little or no risk.
Current Weather
Pollutant Breakdown
Dominant pollutant: O3
PM2.5 Forecast (next 7 days)
Health Guidance
Data from: Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム), Kanagawa Prefectural Environmental Science Research Center, Environmental Monitoring Information Division (神奈川県環境科学センター 環境監視情報課), Kanagawa Prefectural Environmental Science Research Center, Environmental Monitoring Information Division (神奈川県環境科学センター 環境監視情報課), World Air Quality Index Project
Is the air safe in Yokohama today?
The current Air Quality Index (AQI) in Yokohama is 14, which is classified as "Good". Air quality is satisfactory, and air pollution poses little or no risk.
The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.
Air quality in Yokohama, Kanagawa is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.