Worst air pollution Buin, today and tomorrow
Today (16 July): Air quality in Buin is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (O3: 12.1/100).
Tomorrow (17 July 2026): Air quality in Buin 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
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Buin's air quality reflects the Santiago metropolitan area's southern Maipo River valley corridor at 428 metres at the Central Valley's southern extent, with vehicle traffic on surrounding roads and the wine, agricultural, and light industrial character contributing local sources. The Santiago metropolitan regional background influences the corridor, while Pacific westerlies provide seasonal relief and Buin generally maintains moderate to good Chilean southern Santiago metropolitan corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 22:00
AQI:
Good
12.1/100
PM2.5 (fine particles):
Good
9.7/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
12.1/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.8/100
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
10.5/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
16.9/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.9/100
Frequently Asked Questions
Is air quality bad in Buin right now?
On 16 July 2026, overall air quality in Buin is good. AQI is the main air quality indicator at 12.1/100. Pollution peaks around 10:00 PM (O3: 12.1/100).
Will air quality be worse tomorrow in Buin?
On 17 July 2026, air quality conditions in Buin 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 Buin?
Buin usually sees its poorest air quality when vehicle traffic along with agricultural burning coincide with periods when dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. Such events are most common in the drier shoulder seasons.
Are air quality levels in Buin 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