Worst air pollution Shimotsuke, today and tomorrow
Today (16 July): Air quality in Shimotsuke is poor. AQI and O3 are poor; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 63.5/100).
Tomorrow (17 July 2026): Air quality in Shimotsuke is fair. AQI improves to fair; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 29.8/100). 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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Shimotsuke's air quality reflects the flat Tochigi Prefecture northern Kanto Plain position, with vehicle traffic on surrounding roads and the manufacturing, agricultural, and residential character 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 Shimotsuke generally maintains moderate Japanese inland Tochigi plain readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Poor
63.5/100
PM2.5 (fine particles):
Good
13.8/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
12.4/100
O3 (ozone):
Poor
63.5/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.9/100
PM1 (ultrafine particles):
Good
16.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
29.8/100
PM2.5 (fine particles):
Good
12.2/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
11.2/100
O3 (ozone):
Fair
29.8/100
SO2 (sulfur dioxide):
Good
6.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Good
15.4/100
Frequently Asked Questions
Is air quality bad in Shimotsuke right now?
On 16 July 2026, overall air quality in Shimotsuke is poor. AQI is the main air quality indicator at 63.5/100. Pollution peaks around 1:00 PM (O3: 63.5/100).
Will air quality be worse tomorrow in Shimotsuke?
On 17 July 2026, air quality conditions in Shimotsuke will be better than today, with AQI forecast at fair at 29.8/100. Pollution peaks around 1:00 PM (O3: 29.8/100).
When is air pollution at its worst in Shimotsuke?
Pollution in Shimotsuke typically rises when road traffic, heavy industrial and chemical processing, along with manufacturing activity combine, especially once hot, still weather settles in. 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 Shimotsuke 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