Worst air pollution Ōta-ku, today and tomorrow
Today (16 July): Air quality in Ōta-ku is fair. PM2.5, NO2, and PM1 are fair; AQI and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 52.8/100).
Tomorrow (17 July 2026): Air quality in Ōta-ku is fair. AQI worsens to fair; O3 decreases to good; SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 31.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Ōta-ku's air quality reflects the southeastern Tokyo metropolitan corridor adjacent to Haneda Airport, with the airport's concentrated aviation operations and vehicle traffic on surrounding expressways generating elevated NOₓ and ultrafine particles. Tokyo Bay's maritime influence provides limited coastal ventilation, while the airport's flight operations represent the most distinctive local emission source and summer photochemical ozone from the vast Kanto metropolitan corridor is the primary warm-season concern throughout the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Medium
52.8/100
PM2.5 (fine particles):
Fair
24.3/100
PM10 (coarse particles):
Good
6.9/100
NO2 (nitrogen dioxide):
Fair
28.6/100
O3 (ozone):
Medium
52.8/100
SO2 (sulfur dioxide):
Good
16.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Fair
29.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 05:00
AQI:
Fair
31.9/100
PM2.5 (fine particles):
Fair
24.8/100
PM10 (coarse particles):
Good
6.9/100
NO2 (nitrogen dioxide):
Fair
31.9/100
O3 (ozone):
Good
15.4/100
SO2 (sulfur dioxide):
Fair
26.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Fair
31.3/100
Frequently Asked Questions
Is air quality bad in Ōta-ku right now?
On 16 July 2026, overall air quality in Ōta-ku is fair. PM1 is the main pollutant at 29.8/100. Pollution peaks around 1:00 PM (O3: 52.8/100).
Will air quality be worse tomorrow in Ōta-ku?
On 17 July 2026, air quality conditions in Ōta-ku will be similar to today, with AQI forecast at fair at 31.9/100. Pollution peaks around 5:00 AM (NO2: 31.9/100).
When is air pollution at its worst in Ōta-ku?
The biggest local contributors to pollution in Ōta-ku are road traffic, airport and aviation operations, and steel, cement, and chemical production, particularly once hot, still weather settles in. Heat and sunlight combine with emissions to form ozone at ground level. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Ōta-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