Santiago Unhealthy

Santiago, Santiago

Updated: Jul 9, 2026, 2:00 PM

Unhealthy

Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.

Current Weather

18.6°C

Temperature

19%

Humidity

1.3

mph wind

Overcast

Conditions

Pollutant Breakdown

156

PM2.5

µg/m³ · Fine particles

143

PM10

µg/m³ · Coarse particles

1.6

Ozone

ppb · Ground-level ozone

72.4

NO₂

ppb · Nitrogen dioxide

—

SO₂

ppb · Sulfur dioxide

15.2

ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Tue

7/7

162

avg

Wed

7/8

151

avg

Thu

7/9

avg

Fri

7/10

104

avg

Sat

7/11

avg

Sun

7/12

avg

Mon

7/13

112

avg

Health Guidance

🚫

Sensitive groups: Avoid prolonged outdoor exertion. Move activities indoors.

⚠️

General population: Reduce prolonged or heavy outdoor exertion. Take more breaks.

💨

Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: Sistema Nacional de Calidad del Aire en Chile, World Air Quality Index Project

Is the air safe in Santiago today?

The current Air Quality Index (AQI) in Santiago is 156, which is classified as "Unhealthy". Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Santiago, Santiago is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50

Good

51–100

Moderate

101–150

Unhealthy for Sensitive Groups

151–200

Unhealthy

201–300

Very Unhealthy

301+

Hazardous