What is the air quality in Chillán Viejo today?

The current Air Quality Index (AQI) in Chillán Viejo is 56 (Moderate). PM2.5 concentration is 14.45 µg/m³.

What is the temperature in Chillán Viejo right now?

The current temperature in Chillán Viejo is 7.9°C (feels like 2.6°C). Humidity is 80.8% and wind speed is 51.9 km/h.

Air Quality in Chillán Viejo, Chile

Windy

7.9°C · 80.8% humidity

7.9°

Feels 2.6°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

2 stations

Nearby Monitoring Stations

AQI Forecast

24 5pm

56 8pm

36 11pm

29 2am

27 5am

25 8am

25 11am

25 2pm

Air Quality Index Trend

34h · 1 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.

80.8%

Humidity

51.9 km/h

Wind SSW

1021.0 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

14.45 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Chillán Viejo?

Temperature & Precipitation

PM2.5 Trend

34h · 1 station

PM2.514.45 µg/m³ ✓ WHO

Moderate

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

14.45

Median

14.45

Average

12.0

Low

16.9

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -8.6

What is the 7-day forecast for Chillán Viejo?

07-22

7.9° 1.0°

2.75 mm

07-23

14.5° 2.2°

1.06 mm

07-24

12.9° -0.1°

0.25 mm

07-25

10.8° 4.8°

3.88 mm

07-26

16.4° 3.8°

4.88 mm

07-27

12.9° 4.6°

0.19 mm

07-28

17.1° 9.8°

1.75 mm

Both models agree Avg diff: 3.6°C

Where are air quality stations near Chillán Viejo?

Puren, Chile

3.6 km PM2.5: 7.0 µg/m³

Puren, Chile

3.6 km PM2.5: 14.0 µg/m³

INIA, Chillán, Chile

4.9 km PM2.5: 6.2 µg/m³

INIA, Chillán, Chile

4.9 km PM2.5: 13.1 µg/m³

San Carlos, Chile

23.0 km PM2.5: 9.6 µg/m³

San Carlos, Chile

23.0 km PM2.5: 15.0 µg/m³

San Carlos, Chile

23.0 km PM2.5: 24.5 µg/m³

What cities are near Chillán Viejo?

56 Chillán 56 Coihueco 56 San Carlos 36 Quillón 36 Cabrero 38 Coelemu 34 Parral 23 Tomé 32 Cauquenes 45 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 2026-07-22T00:55 UTC.