Reported by World Air Quality Index today.
It is the strongest of the 8 detections recorded within 20 km of this point since 17 May 2026. The last comparable one was on 27 August 2026.
What the source measured
World Air Quality Index reported: AQI 175 (Unhealthy) at Parelheiros, São Paulo, Brazil
The air quality index read 175 (Unhealthy) at the Parelheiros, São Paulo, Brazil station.
An estimated 108,272 people live within 5 km of this point.
Nearby, since 17 May 2026
- August 27, 2026 · score 35 · 13.3 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 50 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) | 50 / 100 |
| Our confidence | 67% |
| Coordinates | -23.7763, -46.6970 |
| Nearest City | Grajaú (3 km) |
| Population Exposed | 108.3K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T23:00:00.000Z |
| Source | https://aqicn.org/city/@358 |
Score Breakdown
Technical Details
| Aqi | 175 |
| AqiCategory | Unhealthy |
| StationName | Parelheiros, São Paulo, Brazil |
| StationUid | 358 |
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.
Want to know when something happens near Grajaú?
Calamity.live data shows a air quality event with CalamityScore 50/100, near Grajaú (Brazil), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.