Worst air pollution Katsushika-ku, today and tomorrow
Today (16 July): Air quality in Katsushika-ku is fair. AQI, NO2, O3, and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 28.9/100).
Tomorrow (17 July 2026): Air quality in Katsushika-ku is fair. O3 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 31.7/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Katsushika-ku's air quality reflects the northeastern Tokyo metropolitan corridor adjacent to the Edogawa River, with vehicle traffic on surrounding expressways and the dense urban residential and manufacturing character contributing elevated NOₓ. The flat Kanto Plain allows reasonable dispersal, while the broader Tokyo metropolitan regional emissions elevate background and summer photochemical ozone from the vast Kanto corridor is the primary warm-season concern and Katsushika generally maintains moderate Tokyo northeastern manufacturing corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Good
18.6/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Fair
27.3/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
13.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.1/100
PM1 (ultrafine particles):
Fair
24.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 03:00
AQI:
Fair
31.7/100
PM2.5 (fine particles):
Good
19.6/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
31.7/100
O3 (ozone):
Good
16.0/100
SO2 (sulfur dioxide):
Good
16.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Fair
22.8/100
Frequently Asked Questions
Is air quality bad in Katsushika-ku right now?
On 16 July 2026, overall air quality in Katsushika-ku is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 2:00 PM (O3: 28.9/100).
Will air quality be worse tomorrow in Katsushika-ku?
On 17 July 2026, air quality conditions in Katsushika-ku will be similar to today, with AQI forecast at fair at 31.7/100. Pollution peaks around 3:00 AM (NO2: 31.7/100).
When is air pollution at its worst in Katsushika-ku?
In Katsushika-ku, traffic emissions, petrochemical and refining operations, along with light manufacturing are the main local sources, with conditions worsening when warm, sunny weather takes hold. Strong sunlight reacting with local emissions drives up ground-level ozone. Readings are generally lower during the cooler, cloudier months.
Are air quality levels in Katsushika-ku based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app