Worst air pollution Hekinan, today and tomorrow
Today (16 July): Air quality in Hekinan is poor. AQI and O3 are poor; NO2 and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 77.3/100).
Tomorrow (17 July 2026): Air quality in Hekinan is poor. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 73.4/100). 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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Hekinan's air quality reflects the Aichi Prefecture Kinuura Bay coastal position adjacent to the Hekinan Thermal Power Station, with vehicle traffic on surrounding roads and the coal-fired power station generating elevated SO₂ and PM2.5 alongside vehicle sources. Consistent Mikawa Bay maritime breezes provide coastal ventilation, while the power station's industrial scale represents Hekinan's most distinctive local air quality contribution and the coastal position generally manages readings on most wind days throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
77.3/100
PM2.5 (fine particles):
Good
16.3/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Fair
20.0/100
O3 (ozone):
Poor
77.3/100
SO2 (sulfur dioxide):
Good
8.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.6/100
PM1 (ultrafine particles):
Fair
20.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Poor
73.4/100
PM2.5 (fine particles):
Good
17.3/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Good
15.7/100
O3 (ozone):
Poor
73.4/100
SO2 (sulfur dioxide):
Good
6.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Fair
21.6/100
Frequently Asked Questions
Is air quality bad in Hekinan right now?
On 16 July 2026, overall air quality in Hekinan is poor. AQI is the main air quality indicator at 77.3/100. Pollution peaks around 2:00 PM (O3: 77.3/100).
Will air quality be worse tomorrow in Hekinan?
On 17 July 2026, air quality conditions in Hekinan will be similar to today, with AQI forecast at poor at 73.4/100. Pollution peaks around 3:00 PM (O3: 73.4/100).
When is air pollution at its worst in Hekinan?
The biggest local contributors to pollution in Hekinan are road traffic along with the local power plant, particularly once dry spells bring strong winds. Dust carried on these winds adds substantially to particulate levels. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Hekinan 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