Worst air pollution Chino, today and tomorrow
Today (16 July): Air quality in Chino is fair. PM2.5, NO2, and PM1 are fair; AQI and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 53.0/100).
Tomorrow (17 July 2026): Air quality in Chino is fair. PM2.5 decreases to good; NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 51.8/100). 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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Chino's air quality benefits from its exceptional Nagano Prefecture Suwa Basin position at 900 metres adjacent to Lake Suwa, with vehicle traffic on surrounding roads and the precision machinery, crystal manufacturing, and tourism corridor contributing local sources. The surrounding Yatsugatake and Southern Alps create dramatic topographic variation, while lake breezes provide natural ventilation and Chino generally maintains moderate to good conditions for a Japanese inland Nagano highland lake city throughout most of the year.
Today - 16 July | Pollution peaks at 15:00
AQI:
Medium
53.0/100
PM2.5 (fine particles):
Fair
22.8/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Fair
20.0/100
O3 (ozone):
Medium
53.0/100
SO2 (sulfur dioxide):
Good
8.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.0/100
PM1 (ultrafine particles):
Fair
27.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
17.6/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.3/100
PM1 (ultrafine particles):
Fair
20.2/100
Frequently Asked Questions
Is air quality bad in Chino right now?
On 16 July 2026, overall air quality in Chino is fair. PM1 is the main pollutant at 27.9/100. Pollution peaks around 3:00 PM (O3: 53.0/100).
Will air quality be worse tomorrow in Chino?
On 17 July 2026, air quality conditions in Chino will be similar to today, with PM1 forecast at fair at 20.2/100. Pollution peaks around 12:00 PM (O3: 51.8/100).
When is air pollution at its worst in Chino?
Chino usually sees its poorest air quality when road traffic, manufacturing and food processing, and tourism-related traffic coincide with periods when winds are light and dispersion is poor. Background emissions and local weather both shape how conditions change from day to day. Conditions can otherwise vary considerably with the weather.
Are air quality levels in Chino 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