Worst air pollution Toyokawa, today and tomorrow
Today (16 July): Air quality in Toyokawa is very poor. AQI and O3 are very poor; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 82.8/100).
Tomorrow (17 July 2026): Air quality in Toyokawa is poor. AQI improves to poor; O3 decreases to poor; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 68.7/100). 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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Toyokawa's air quality reflects the Aichi Prefecture Toyo River coastal plain position adjacent to Toyohashi, with vehicle traffic on surrounding roads and the Japan Ground Self-Defense Force Toyokawa base, manufacturing, and agricultural corridor contributing elevated military and vehicle NOₓ alongside primary vehicle sources. Consistent Mikawa Bay maritime breezes provide coastal ventilation, while the military base's operations represent the most distinctive local emission source and the area generally maintains moderate Aichi eastern corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Very poor
82.8/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
6.1/100
O3 (ozone):
Very poor
82.8/100
SO2 (sulfur dioxide):
Good
3.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Good
17.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Poor
68.7/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Good
6.7/100
O3 (ozone):
Poor
68.7/100
SO2 (sulfur dioxide):
Good
3.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.9/100
PM1 (ultrafine particles):
Good
18.7/100
Frequently Asked Questions
Is air quality bad in Toyokawa right now?
On 16 July 2026, overall air quality in Toyokawa is very poor. AQI is the main air quality indicator at 82.8/100. Pollution peaks around 2:00 PM (O3: 82.8/100).
Will air quality be worse tomorrow in Toyokawa?
On 17 July 2026, air quality conditions in Toyokawa will be better than today, with AQI forecast at poor at 68.7/100. Pollution peaks around 1:00 PM (O3: 68.7/100).
When is air pollution at its worst in Toyokawa?
Pollution in Toyokawa typically rises when vehicle traffic, aircraft operations at the local air base, and manufacturing and food processing combine, especially once maritime winds die down. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Toyokawa 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