Worst air pollution Rengo, today and tomorrow
Today (16 July): Air quality in Rengo is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 12.1/100).
Tomorrow (17 July 2026): Air quality in Rengo is good. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 16.9/100). 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
Use our Strava plugin to check your own exposure.
Rengo's air quality reflects the Chilean O'Higgins Region's Cachapoal River valley position at 231 metres in the Central Valley, with vehicle traffic on surrounding roads and the wine, fruit, and agricultural corridor contributing local sources. The Central Valley's winter inversions compound vehicle and residential heating emissions, while Pacific westerlies provide seasonal relief and Rengo generally maintains moderate Chilean central valley agricultural readings throughout most of the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
12.1/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
12.1/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Good
16.9/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
16.9/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.6/100
Frequently Asked Questions
Is air quality bad in Rengo right now?
On 16 July 2026, overall air quality in Rengo is good. AQI is the main air quality indicator at 12.1/100. Pollution peaks around 11:00 PM (O3: 12.1/100).
Will air quality be worse tomorrow in Rengo?
On 17 July 2026, air quality conditions in Rengo will be similar to today, with AQI forecast at good at 16.9/100. Pollution peaks around 11:00 PM (O3: 16.9/100).
When is air pollution at its worst in Rengo?
Air quality in Rengo tends to be worse when vehicle traffic as well as farming and agricultural processing build up and calm, stagnant conditions settle in the surrounding valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. Fuel burned for winter heating adds an extra layer of particulates on top of other sources.
Are air quality levels in Rengo 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.
Check air quality in other popular cities:
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