Air Quality in La Unión, Chile
Overcast
7.7°C · 96.3% humidity
7.7°
Feels 6.3°
93
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
La Unión's air quality — share it
AQI Forecast
24
3pm
24
24
93
6pm
74
60
52
9pm
45
40
34
12am
32
30
28
3am
27
27
26
6am
26
26
25
9am
25
25
25
12pm
24
24
Air Quality Index Trend
45h · 1 stnLa Unión'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 La Unión is 2.1× the WHO 24-hour guideline of 15 µg/m³.
96.3%
Humidity
8.3 km/h
Wind WSW
1018.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
32.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for La Unión?
Temperature & Precipitation
PM2.5 Trend
45h · 1 stationPM2.532.1 µg/m³
×2.1 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
32.1
Median
32.1
Average
32.1
Low
32.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -26.2
What is the 7-day forecast for La Unión?
05-29
12.1° 3.2°
05-30
10.4° 6.0°
3.0 mm
05-31
11.6° 8.9°
0.13 mm
06-01
13.1° 4.5°
06-02
13.1° 3.9°
1.25 mm
06-03
11.0° 4.1°
0.06 mm
06-04
10.4° 5.6°
0.38 mm
Both models agree
Avg diff: 2.8°C
Where are air quality stations near La Unión?
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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 2026-05-29T22:25 UTC.