Right now
The most recent data we hold from World Air Quality Index arrived 30 minutes ago, and this point is in it.
3 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by World Air Quality Index today.
It is the 2nd strongest of the 9 detections recorded within 20 km of this point since 2 September 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
World Air Quality Index reported: AQI 221 (Very Unhealthy) at Coyhaique, Chile
The air quality index read 221 (Very Unhealthy) at the Coyhaique, Chile station.
Urban PEI: 30,268 within a heuristic 5 km radius; not unique people.
At this point we have recorded a air quality index between 161 and 422, over 6 readings since 28 September 2026. Today's reading sits 23% of the way up that range.
Nearby, since 2 September 2026
- September 18, 2026 · score 41 · 0.0 km
- September 13, 2026 · 0.0 km
- September 10, 2026 · 0.0 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 48 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Air Quality |
| Severity | High |
| Calamity Score (ours) | 48 / 100 |
| Legacy data-support index | 0.68/1 |
| Coordinates | -45.5800, -72.0611 |
| Nearest City | Coyhaique (1 km) |
| Urban exposure index (PEI) | 30.3K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-28T05:00:00.000Z |
| Source | https://aqicn.org/city/@445 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: waqi. Occurrence: 2026-09-28T05:00:00.000Z.
First archived: 2026-09-28T02:14:12.115Z. Material modification: 2026-09-28T07:21:53.426Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-28T07:21:53.426Z · data_change
Index 41 → 48; severity medium → high.
2026-09-28T05:51:41.521Z · data_change
Index 52 → 41; severity high → medium.
2026-09-28T04:21:01.618Z · data_change
Index 48 → 52.
2026-09-28T03:49:17.288Z · data_change
Index 58 → 48; severity critical → high.
1 retained revision changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Aqi | 221 |
| AqiCategory | Very Unhealthy |
| StationName | Coyhaique, Chile |
| StationUid | 445 |
| Network | official |
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.
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