Right now
The most recent data we hold from World Air Quality Index arrived 87 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by World Air Quality Index today.
It is one of only 4 we have recorded within 20 km of this point since 26 August 2026. The last comparable one was on 3 September 2026.
What the source measured
World Air Quality Index reported: AQI 157 (Unhealthy) at Simara, Nepal
The air quality index read 157 (Unhealthy) at the Simara, Nepal station.
At this point we have recorded a air quality index between 154 and 164, over 33 readings since 5 September 2026. Today's reading sits 30% of the way up that range.
Nearby, since 26 August 2026
- September 3, 2026 · score 29 · 0.0 km
- September 2, 2026 · score 29 · 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 29 out of 100, at 46 % 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) | 29 / 100 |
| Our confidence | 46% |
| Coordinates | 27.1567, 84.9978 |
| Nearest City | Birgañj (19 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T09:15:00.000Z |
| Source | https://aqicn.org/city/@10492 |
Score Breakdown
Technical Details
| Aqi | 157 |
| AqiCategory | Unhealthy |
| StationName | Simara, Nepal |
| StationUid | 10492 |
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 Birgañj?
Calamity.live data shows a air quality event with CalamityScore 29/100, near Birgañj (Nepal), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.