Worst air pollution San Felipe, today and tomorrow
Today (16 July): Air quality in San Felipe is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 PM (O3: 12.3/100).
Tomorrow (17 July 2026): Air quality in San Felipe is good. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 16.6/100). 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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San Felipe in Valparaíso reflects the Chilean Aconcagua River valley's position at 654 metres between the Andes and the coastal Cordillera, with vehicle traffic on surrounding roads and the fruit, wine, and agricultural corridor contributing local sources. The Aconcagua valley's topographic enclosure creates concentration under winter inversions, while Pacific westerlies provide seasonal relief and San Felipe generally maintains moderate Chilean Valparaíso agricultural valley readings throughout most of the year.
Today - 16 July | Pollution peaks at 20:00
AQI:
Good
12.3/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
12.3/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Good
16.6/100
PM2.5 (fine particles):
Good
10.3/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
16.6/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.9/100
Frequently Asked Questions
Is air quality bad in San Felipe right now?
On 16 July 2026, overall air quality in San Felipe is good. AQI is the main air quality indicator at 12.3/100. Pollution peaks around 8:00 PM (O3: 12.3/100).
Will air quality be worse tomorrow in San Felipe?
On 17 July 2026, air quality conditions in San Felipe will be similar to today, with AQI forecast at good at 16.6/100. Pollution peaks around 11:00 PM (O3: 16.6/100).
When is air pollution at its worst in San Felipe?
Air quality in San Felipe tends to be worse when road traffic and agricultural activity build up and the surrounding valley traps air close to the ground. The bowl-like terrain here limits how quickly pollutants can escape. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in San Felipe 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