Reported by World Air Quality Index today.
The last comparable one was on 24 August 2026.
What the source measured
World Air Quality Index reported: AQI 177 (Unhealthy) at INIA, Chillán, Chile
The air quality index read 177 (Unhealthy) at the INIA, Chillán, Chile station.
An estimated 68,768 people live within 5 km of this point.
This is the highest air quality index we have recorded at this point, over 12 readings since 6 August 2026 — the previous range was 161 to 177.
Nearby, since 6 August 2026
- August 24, 2026 · score 35 · 2.4 km
How we know
One source: World Air Quality Index. Not yet confirmed by a second, independent source.
Our own score for this event is 23 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Air quality |
| Severity | medium |
| Calamity Score (ours) | 23 / 100 |
| Our confidence | 67% |
| Coordinates | -36.5949, -72.0893 |
| Nearest City | Chillán (2 km) |
| Population Exposed | 68.8K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T05:00:00.000Z |
| Source | https://aqicn.org/city/@442 |
Score Breakdown
Technical Details
| Aqi | 177 |
| AqiCategory | Unhealthy |
| StationName | INIA, Chillán, Chile |
| StationUid | 442 |
Safety Information
When air quality is hazardous: stay indoors with windows closed, and run a filtered air purifier if you have one. Avoid outdoor exercise. Children, older adults and anyone with heart or lung conditions are affected first and worst — an N95 respirator helps outdoors, a cloth mask does not.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a air quality event with CalamityScore 23/100, near Chillán (Chile), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.