Worst air pollution Setagaya, today and tomorrow
Today (16 July): Air quality in Setagaya is fair. PM2.5 and PM1 are fair; AQI and O3 are medium; PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 52.8/100).
Tomorrow (17 July 2026): Air quality in Setagaya is fair. AQI worsens to fair; NO2 increases to fair; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 AM (PM1: 30.3/100). 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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Setagaya's air quality reflects the southwestern Tokyo metropolitan residential corridor, with vehicle traffic on surrounding expressways and the dense urban residential and commercial 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 Setagaya generally maintains moderate Tokyo southwestern residential corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Medium
52.8/100
PM2.5 (fine particles):
Fair
23.4/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Good
18.8/100
O3 (ozone):
Medium
52.8/100
SO2 (sulfur dioxide):
Good
9.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Fair
28.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 02:00
AQI:
Fair
30.3/100
PM2.5 (fine particles):
Fair
23.9/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Fair
21.0/100
O3 (ozone):
Good
15.4/100
SO2 (sulfur dioxide):
Good
15.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Fair
30.3/100
Frequently Asked Questions
Is air quality bad in Setagaya right now?
On 16 July 2026, overall air quality in Setagaya is fair. PM1 is the main pollutant at 28.8/100. Pollution peaks around 1:00 PM (O3: 52.8/100).
Will air quality be worse tomorrow in Setagaya?
On 17 July 2026, air quality conditions in Setagaya will be similar to today, with AQI forecast at fair at 30.3/100. Pollution peaks around 2:00 AM (PM1: 30.3/100).
When is air pollution at its worst in Setagaya?
Air quality in Setagaya tends to be worse when road traffic and heavy industry such as steel, cement, or petrochemical processing build up and warm, sunny weather takes hold. Strong sunlight reacting with local emissions drives up ground-level ozone. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Setagaya 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