What is the air quality in Chillán Viejo today?

The current Air Quality Index (AQI) in Chillán Viejo is 20 (Good). PM2.5 concentration is 4.85 µg/m³.

What is the temperature in Chillán Viejo right now?

The current temperature in Chillán Viejo is 4.9°C (feels like 0.4°C). Humidity is 86.4% and wind speed is 25.1 km/h.

Is it safe to go outside in Chillán Viejo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Chillán Viejo, Chile

Cloudy

4.9°C · 86.4% humidity

4.9°

Feels 0.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

24 3am

20 6am

24 9am

24 12pm

24 3pm

24 6pm

24 9pm

24 12am

Air Quality Index Trend

42h · 2 stn

View full history →

Chillán Viejo's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.

86.4%

Humidity

25.1 km/h

Wind SSW

1018.8 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.85 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Chillán Viejo?

Temperature & Precipitation

PM2.5 Trend

42h · 2 stations

PM2.54.85 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

4.85

Median

5.65

Average

3.1

Low

8.2

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +0.9

What is the 7-day forecast for Chillán Viejo?

09-05

11.7° 4.9°

0.94 mm

09-06

13.9° 6.0°

09-07

15.8° 6.2°

1.56 mm

09-08

11.2° 5.9°

3.62 mm

09-09

15.7° 2.7°

2.12 mm

09-10

15.9° 9.1°

2.94 mm

09-11

17.1° 3.7°

15.75 mm

Both models agree Avg diff: 2.8°C

Where are air quality stations near Chillán Viejo?

Puren, Chile

3.6 km PM2.5: 3.1 µg/m³

Puren, Chile

3.6 km PM2.5: 6.0 µg/m³

INIA, Chillán, Chile

4.9 km PM2.5: 9.1 µg/m³

INIA, Chillán, Chile

4.9 km PM2.5: 4.1 µg/m³

INIA, Chillán, Chile

4.9 km PM2.5: 8.2 µg/m³

San Carlos, Chile

23.0 km PM2.5: 6.0 µg/m³

San Carlos, Chile

23.0 km PM2.5: 17.8 µg/m³

San Carlos, Chile

23.0 km PM2.5: 3.1 µg/m³

San Carlos, Chile

23.0 km PM2.5: 6.0 µg/m³

San Carlos, Chile

23.0 km PM2.5: 9.1 µg/m³

What cities are near Chillán Viejo?

21 Chillán 24 Coihueco 25 San Carlos 36 Quillón 36 Cabrero 35 Coelemu 36 Parral 32 Tomé 30 Cauquenes 29 Penco

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T10:05 UTC.