Air Quality in United States
Reported by World Air Quality Index today.
What the source measured
World Air Quality Index reported: AQI 177 (Unhealthy) at Big Sur Ranger Station
The air quality index read 177 (Unhealthy) at the Big Sur Ranger Station station.
This is the highest air quality index we have recorded at this point, over 7 readings since 27 August 2026 — the previous range was 170 to 177.
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.
Event Data
| Type | Air quality |
| Severity | medium |
| Calamity Score (ours) | 29 / 100 |
| Our confidence | 46% |
| Coordinates | 36.2481, -121.7814 |
| Nearest City | Monterey (40 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T13:00:00.000Z |
| Source | https://aqicn.org/city/@-398764 |
Score Breakdown
Technical Details
| Aqi | 177 |
| AqiCategory | Unhealthy |
| StationName | Big Sur Ranger Station |
| StationUid | -398764 |
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 Monterey?
Calamity.live data shows a air quality event with CalamityScore 29/100 (United States), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.