Worst air pollution Nishio, today and tomorrow
Today (16 July): Air quality in Nishio is very poor. AQI and O3 are very poor; NO2 and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 82.8/100).
Tomorrow (17 July 2026): Air quality in Nishio 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.
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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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Nishio's air quality reflects the Aichi Prefecture Yahagi River delta coastal position on Mikawa Bay, with vehicle traffic on surrounding roads and the automotive parts, matcha tea production — Nishio being Japan's matcha capital — and manufacturing corridor contributing distinctive tea processing organic aerosols alongside primary vehicle sources. Consistent Mikawa Bay maritime breezes provide coastal ventilation, while the tea processing operations' distinctive organic emissions represent Nishio's most locally unique air quality characteristic throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Very poor
82.8/100
PM2.5 (fine particles):
Good
17.4/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
23.7/100
O3 (ozone):
Very poor
82.8/100
SO2 (sulfur dioxide):
Good
13.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Fair
20.1/100
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
18.8/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
25.5/100
O3 (ozone):
Poor
68.7/100
SO2 (sulfur dioxide):
Good
13.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.9/100
PM1 (ultrafine particles):
Fair
21.5/100
Frequently Asked Questions
Is air quality bad in Nishio right now?
On 16 July 2026, overall air quality in Nishio 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 Nishio?
On 17 July 2026, air quality conditions in Nishio 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 Nishio?
In Nishio, vehicle traffic as well as manufacturing and food processing are the main local sources, with conditions worsening when the sea breeze weakens. 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 Nishio 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