Right now
Nothing else has been detected within 20 km in the last 24 hours.
Reported by World Air Quality Index 2 days ago.
It is the 4th strongest of the 21 detections recorded within 20 km of this point since 2 September 2026. The last comparable one was on 3 October 2026. 14 more were recorded here in the fortnight before it.
What the source measured
World Air Quality Index reported: AQI 272 (Very Unhealthy) at Mempawah, Indonesia
The air quality index read 272 (Very Unhealthy) at the Mempawah, Indonesia station.
At this point we have recorded a air quality index between 186 and 361, over 9 readings since 4 October 2026. Today's reading sits 49% of the way up that range.
Nearby, since 2 September 2026
- October 3, 2026 · score 29 · 0.0 km
- October 2, 2026 · score 29 · 0.0 km
- October 1, 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 36 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.
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.
Event data
| Type | Air Quality |
| Severity | High |
| Calamity Score (ours) | 36 / 100 |
| Legacy data-support index | 0.48/1 |
| Coordinates | 0.1240, 110.4560 |
| Nearest city | Tebedu (101 km) |
| Urban exposure index (PEI) | 0 within 5 km |
| Impact tier | minor |
| Timestamp | 2026-10-04T12:00:00.000Z |
| Source | https://aqicn.org/city/@13648 |
| Licence | WAQI API terms · World Air Quality Index Project |
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: 2026-10-04T12:00:00.000Z.
First archived: 2026-10-04T03:42:27.384Z. Material modification: 2026-10-04T12:49:50.211Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-10-04T10:55:57.393Z · data change
Index 43 → 36; severity Critical → High.
2026-10-04T09:52:39.280Z · data change
Index 36 → 43; severity High → Critical.
2026-10-04T07:51:49.455Z · data change
Index 29 → 36.
2026-10-04T06:54:05.179Z · data change
Severity Medium → High.
2026-10-04T05:51:03.422Z · data change
Index 36 → 29; severity High → Medium.
6 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score breakdown
Technical details
| Aqi | 272 |
| AqiCategory | Very Unhealthy |
| StationName | Mempawah, Indonesia |
| StationUid | 13648 |
| Network | official |
Safety information
What to do when the air is unhealthy
Three things first, then what each level of the index means. From the US EPA’s AirNow.
For this reportAir Quality · Malaysia
Less effort outdoors
Shorten or move indoors hard activity; the worse the index, the more people it concerns.
AirNowKeep indoor air clean
Windows closed when the air outside is worse, an air purifier if you have one.
AirNowA real mask outside
A well-fitting N95/FFP2 filters fine particles; cloth and surgical masks do little.
AirNow
Before, during, after. Here it is “after”.
Before · When bad air is forecast
Follow the index
Your local air quality index and forecast.
Medicines at hand
If you have asthma or a heart or lung condition, keep your medicines with you.
AirNow (US EPA)
During · While the air is bad
Children, older people, the sick
They are the first to reduce effort outdoors.
Watch for symptoms
Coughing, breathlessness, chest pain: stop and get help if needed.
AirNow (US EPA)
After · When it improves
Air the house
When the outside air is better than inside.
AirNow (US EPA)
Questions people ask
What do the index levels mean?
0-50 good; 51-100 moderate; 101-150 unhealthy for sensitive groups; 151-200 unhealthy, for everyone; 201-300 very unhealthy; over 300 hazardous. Source: AirNow (US EPA).
Who are the sensitive groups?
People with heart or lung disease, older adults, children and teenagers, pregnant women and people who work or exercise outdoors. Source: AirNow (US EPA).
Review the area, threshold and delivery channel in your account.