Reported by World Air Quality Index 7 days ago.
It is the 6th strongest of the 57 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 25 August 2026.
What the source measured
World Air Quality Index reported: AQI 171 (Unhealthy) at Sonia Vihar Water Treatment Plant DJB, Delhi, Delhi, India
The air quality index read 171 (Unhealthy) at the Sonia Vihar Water Treatment Plant DJB, Delhi, Delhi, India station.
An estimated 220,658 people live within 5 km of this point.
Nearby, since 16 March 2026
- August 12, 2026 · score 31 · 7.8 km
- August 27, 2026 · score 26 · 7.9 km
- August 8, 2026 · score 31 · 10.8 km
How we know
Confirmed by 2 independent sources, including World Air Quality Index.
Our own score for this event is 35 out of 100, at 68 % 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) | 35 / 100 |
| Our confidence | 68% |
| Coordinates | 28.7101, 77.2462 |
| Nearest City | Khajoori Khas (1 km) |
| Population Exposed | 220.7K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-08-26T02:30:00.000Z |
| Source | https://aqicn.org/city/@10121 |
Score Breakdown
Technical Details
| Aqi | 171 |
| AqiCategory | Unhealthy |
| StationName | Sonia Vihar Water Treatment Plant DJB, Delhi, Delhi, India |
| StationUid | 10121 |
| Openmeteo Aq Pm25 | 106.6 |
| Openmeteo Aq Pm10 | 115.7 |
| Openmeteo Aq UsAqi | 171 |
| Openmeteo Aq AqiCategory | Unhealthy |
| Openmeteo Aq City | Delhi |
| Openmeteo Aq Country | India |
| MergedSources | [{"id":"openmeteo_aq_delhi","source":"openmeteo_aq","severity":"medium","severityValue":46.45,"timestamp":1787706000000,"latitude":28.6,"longitude":77.2}] |
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 Khajoori Khas?
Calamity.live data shows a air quality event with CalamityScore 35/100, near Khajoori Khas (India), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.