Worst air pollution Toyohashi, today and tomorrow
Today (16 July): Air quality in Toyohashi 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 Toyohashi is poor. AQI improves to poor; O3 decreases to poor; PM1 increases to fair; 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
Use our Strava plugin to check your own exposure.
Toyohashi's air quality benefits from its exceptional Mikawa Bay and Pacific Ocean coastal position in Aichi Prefecture, with consistent Pacific and Mikawa Bay maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the automotive parts, feed and livestock, and manufacturing corridor contribute local sources, while the outstanding coastal exposure generally maintains Toyohashi among Aichi's more moderately ventilated coastal cities and summer ozone from the Chukyo corridor is the primary warm-season concern.
Today - 16 July | Pollution peaks at 14:00
AQI:
Very poor
82.8/100
PM2.5 (fine particles):
Good
16.0/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
15.7/100
O3 (ozone):
Very poor
82.8/100
SO2 (sulfur dioxide):
Good
8.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Good
18.6/100
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
17.4/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Good
17.3/100
O3 (ozone):
Poor
68.7/100
SO2 (sulfur dioxide):
Good
8.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.9/100
PM1 (ultrafine particles):
Fair
20.3/100
Frequently Asked Questions
Is air quality bad in Toyohashi right now?
On 16 July 2026, overall air quality in Toyohashi 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 Toyohashi?
On 17 July 2026, air quality conditions in Toyohashi 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 Toyohashi?
Toyohashi usually sees its poorest air quality when traffic on the surrounding roads along with manufacturing and food processing coincide with periods when summer heat and strong sunlight build up. Strong sunlight reacting with local emissions drives up ground-level ozone. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Toyohashi 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.
Check air quality in other popular cities:
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