Worst air pollution Tochigi, today and tomorrow
Today (16 July): Air quality in Tochigi is poor. AQI and O3 are poor; PM1 is fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 68.8/100).
Tomorrow (17 July 2026): Air quality in Tochigi is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 57.0/100). 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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Tochigi's air quality reflects the flat Tochigi Prefecture northern Kanto Plain position, with vehicle traffic on surrounding roads and the traditional crafts, food processing, and manufacturing corridor contributing local sources. The flat Kanto Plain allows reasonable dispersal, while summer photochemical ozone from the broader Kanto corridor is the primary warm-season concern and Tochigi generally maintains moderate Japanese inland Kanto plain provincial city readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
68.8/100
PM2.5 (fine particles):
Good
19.3/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Good
14.8/100
O3 (ozone):
Poor
68.8/100
SO2 (sulfur dioxide):
Good
6.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.0/100
PM1 (ultrafine particles):
Fair
24.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
57.0/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
16.6/100
O3 (ozone):
Medium
57.0/100
SO2 (sulfur dioxide):
Good
7.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.3/100
PM1 (ultrafine particles):
Fair
21.5/100
Frequently Asked Questions
Is air quality bad in Tochigi right now?
On 16 July 2026, overall air quality in Tochigi is poor. AQI is the main air quality indicator at 68.8/100. Pollution peaks around 2:00 PM (O3: 68.8/100).
Will air quality be worse tomorrow in Tochigi?
On 17 July 2026, air quality conditions in Tochigi will be better than today, with PM1 forecast at fair at 21.5/100. Pollution peaks around 12:00 PM (O3: 57.0/100).
When is air pollution at its worst in Tochigi?
Air quality in Tochigi tends to be worse when vehicle traffic, heavy industry such as steel, cement, or petrochemical processing, along with light manufacturing build up and warm, sunny weather takes hold. Heat and sunlight combine with emissions to form ozone at ground level. Readings are generally lower during the cooler, cloudier months.
Are air quality levels in Tochigi 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