About the results of the air pollution measurements.
These are the measurement results of Air Monitoring Stations in the Tokyo area.
In order to collect data to fully understand the state of air pollution in the Tokyo area, the Air Monitoring Stations operate 24 hours a day, 365 days a year.
■Real Time Information
Check measurements for every hour and past data for up to 1 week before.
- This data is the result of the most recent measurement done by the Air Monitoring Station in the Tokyo Area. It is automatically updated every hour.
- Data for the past one week can be checked.
- The data provided here are quick estimations and not absolute. There are cases where the data is modified later.
- The time-series graphs and data for Monitoring Stations throughout Japan can be accessed from the Monitoring Station List on the「★Soramame-Kun (Japan Atmospheric Environment)」website.
- The data measured in Oshimacho can be downloaded from 「Oshimacho Air Quality Observation Data (Tokyo Metropolitan Government - Bureau of Environment) 」 website.
- The “ ” lines in the data indicate that a measuring apparatus is not in operation.
- When measuring apparatuses are being inspected or are not working properly, “-” will be displayed in the data.
- Wind direction, wind speed, temperature, humidity and amount of solar radiation are provided along with reference data.
- This page works best with Microsoft Internet Explorer versions 9, 10 and 11.
(Station classifications)
- Ambient:Ambient Air Monitoring Stations.
- Roadside:Roadside Air Pollution Monitoring Stations
