Worst air pollution Toyama, today and tomorrow
Today (16 July): Air quality in Toyama is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 55.5/100).
Tomorrow (17 July 2026): Air quality in Toyama is medium. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 43.1/100). 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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Toyama's air quality benefits from its exceptional Toyama Bay and Tateyama Alpine Coast position on the Sea of Japan, with consistent Sea of Japan maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the pharmaceutical manufacturing — Toyama being Japan's pharmaceutical capital — and aluminium corridor contribute local sources, while the outstanding coastal exposure and the Tateyama Mountains rising dramatically inland create topographic variation and Toyama generally maintains moderate to good conditions throughout most of the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Medium
55.5/100
PM2.5 (fine particles):
Good
9.6/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
2.0/100
O3 (ozone):
Medium
55.5/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.0/100
PM1 (ultrafine particles):
Good
10.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
43.1/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
3.8/100
O3 (ozone):
Medium
43.1/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.4/100
PM1 (ultrafine particles):
Good
8.3/100
Frequently Asked Questions
Is air quality bad in Toyama right now?
On 16 July 2026, overall air quality in Toyama is medium. AQI is the main air quality indicator at 55.5/100. Pollution peaks around 12:00 PM (O3: 55.5/100).
Will air quality be worse tomorrow in Toyama?
On 17 July 2026, air quality conditions in Toyama will be similar to today, with AQI forecast at medium at 43.1/100. Pollution peaks around 1:00 PM (O3: 43.1/100).
When is air pollution at its worst in Toyama?
Air quality in Toyama tends to be worse when road traffic as well as manufacturing and food processing build up and maritime winds die down. Onshore breezes usually help clear the air, but pollution can build up when winds are light. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Toyama 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