Air Quality in Chillán Viejo, Chile
Partly Cloudy
12.9°C · 56.7% humidity
12.9°
Feels 12.9°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Chillán Viejo's air quality — share it
AQI Forecast
27
3pm
34
34
63
6pm
60
59
30
9pm
29
27
26
12am
26
26
25
3am
25
25
25
6am
25
27
34
9am
27
27
27
12pm
27
27
Air Quality Index Trend
45h · 2 stnChillán Viejo's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons. Current PM2.5 concentration in Chillán Viejo is 1.2× the WHO 24-hour guideline of 15 µg/m³.
56.7%
Humidity
35.4 km/h
Wind SSW
1014.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
18.04 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Chillán Viejo?
Temperature & Precipitation
PM2.5 Trend
45h · 2 stationsPM2.518.04 µg/m³
×1.2 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
18.04
Median
23.05
Average
17.8
Low
28.3
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -7.2
What is the 7-day forecast for Chillán Viejo?
05-29
19.5° 5.9°
05-30
19.1° 9.8°
05-31
15.4° 8.3°
06-01
15.7° 1.8°
06-02
18.3° 7.1°
06-03
16.9° 4.9°
06-04
13.9° 9.0°
1.13 mm
Both models agree
Avg diff: 2.4°C
Where are air quality stations near Chillán Viejo?
32
Puren, Chile
65
Puren, Chile
53
INIA, Chillán, Chile
75
INIA, Chillán, Chile
16
San Carlos, Chile
96
San Carlos, Chile
77
San Carlos, Chile
What cities are near Chillán Viejo?
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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 2026-05-29T22:27 UTC.