Reported by AIRNOW today.
It is the 11th strongest of the 45 detections recorded within 20 km of this point since 18 April 2026. The last comparable one was on 29 August 2026.
What the source measured
AIRNOW reported: AQI: 203 (Very Unhealthy) · PM2.5 AQI: 57 · Ozone AQI: 203
An estimated 1,312,076 people live within 5 km of this point.
Nearby, since 18 April 2026
- May 14, 2026 · score 14 · 0.0 km
How we know
One source: AIRNOW. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 70 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Air quality |
| Severity | high |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 70% |
| Coordinates | 29.7510, -95.3510 |
| Nearest City | Houston (1 km) |
| Population Exposed | 1.3M within 5 km |
| Impact Tier | severe |
| Timestamp | 2026-08-31T00:00:00.000Z |
| Source | https://www.airnow.gov/ |
Score Breakdown
Technical Details
| Aqi | 203 |
| Pm25Aqi | 57 |
| OzoneAqi | 203 |
| CategoryName | Very Unhealthy |
| ReportingArea | Houston-Galveston-Brazoria |
| StateCode | TX |
| City | Houston |
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.
Calamity.live data shows a air quality event with CalamityScore 37/100, near Houston (United States), based on data from airnow. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.