Worst air pollution Kawaguchi, today and tomorrow
Today (16 July): Air quality in Kawaguchi is poor. AQI and O3 are poor; PM2.5, NO2, SO2, and PM1 are fair; PM10, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 72.9/100).
Tomorrow (17 July 2026): Air quality in Kawaguchi is fair. AQI improves to fair; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 39.9/100). 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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Kawaguchi's air quality reflects the flat Saitama Arakawa River floodplain position immediately north of Tokyo, with vehicle traffic on surrounding expressways and the casting, manufacturing, and dense urban residential 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 Kawaguchi generally maintains moderate Tokyo northern manufacturing corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Poor
72.9/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Fair
28.4/100
O3 (ozone):
Poor
72.9/100
SO2 (sulfur dioxide):
Fair
22.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Fair
25.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
39.9/100
PM2.5 (fine particles):
Fair
21.3/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Fair
39.9/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Fair
34.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Fair
27.2/100
Frequently Asked Questions
Is air quality bad in Kawaguchi right now?
On 16 July 2026, overall air quality in Kawaguchi is poor. AQI is the main air quality indicator at 72.9/100. Pollution peaks around 1:00 PM (O3: 72.9/100).
Will air quality be worse tomorrow in Kawaguchi?
On 17 July 2026, air quality conditions in Kawaguchi will be better than today, with AQI forecast at fair at 39.9/100. Pollution peaks around 10:00 AM (NO2: 39.9/100).
When is air pollution at its worst in Kawaguchi?
Pollution in Kawaguchi typically rises when traffic emissions, steel, cement, and chemical production, and textile and manufacturing operations combine, especially once warm, sunny weather takes hold. Photochemical reactions in the heat push ozone levels higher. This is far less of an issue outside the warmer months.
Are air quality levels in Kawaguchi 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