Reported by World Air Quality Index today.
No stronger detection stands among the 15 recorded within 20 km of this point since 20 May 2026 — 2 others scored the same. The last comparable one was on 3 September 2026.
What the source measured
World Air Quality Index reported: AQI 166 (Unhealthy) at Hualqui, Chile
The air quality index read 166 (Unhealthy) at the Hualqui, Chile station.
An estimated 14,774 people live within 5 km of this point.
This is the highest air quality index we have recorded at this point, over 11 readings since 4 September 2026 — the previous range was 159 to 166.
Nearby, since 20 May 2026
- August 25, 2026 · score 26 · 0.0 km
- August 25, 2026 · score 31 · 11.0 km
- September 3, 2026 · score 36 · 19.6 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 41 out of 100, at 62 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Air Quality |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 62% |
| Coordinates | -36.9774, -72.9320 |
| Nearest City | Hualqui (1 km) |
| Population Exposed | 14.8K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T02:00:00.000Z |
| Source | https://aqicn.org/city/@10695 |
Score Breakdown
Technical Details
| Aqi | 166 |
| AqiCategory | Unhealthy |
| StationName | Hualqui, Chile |
| StationUid | 10695 |
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 8 March 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.
Want to know when something happens near Hualqui?
Calamity.live data shows a air quality event with CalamityScore 41/100, near Hualqui (Chile), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.