Air Quality near Rapid City
Right now
The most recent data we hold from World Air Quality Index arrived 3 hours ago, and this point is in it.
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 2 we have recorded within 20 km of this point since 9 August 2026. The last comparable one was on 9 August 2026.
What the source measured
World Air Quality Index reported: AQI 580 (Hazardous) at Credit Union, South Dakota, USA
The air quality index read 580 (Hazardous) at the Credit Union, South Dakota, USA station.
An estimated 10,948 people live within 5 km of this point.
How we know
One source: World Air Quality Index. Not yet confirmed by a second, independent source.
Our own score for this event is 55 out of 100, at 66 % 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 | Critical |
| Calamity Score (ours) | 55 / 100 |
| Our confidence | 66% |
| Coordinates | 44.0874, -103.2738 |
| Nearest City | Rapid City (4 km) |
| Population Exposed | 10.9K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T17:00:00.000Z |
| Source | https://aqicn.org/city/@7488 |
Score Breakdown
Technical Details
| Aqi | 580 |
| AqiCategory | Hazardous |
| StationName | Credit Union, South Dakota, USA |
| StationUid | 7488 |
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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