Right now
The most recent data we hold from AIRNOW arrived 8 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, <1 km from here.
Reported by AIRNOW 41 days ago.
The last comparable one was on 14 August 2026.
What the source measured
AIRNOW reported: AQI: 126 (Unhealthy for Sensitive Groups) · PM2.5 AQI: 64 · Ozone AQI: 126
Nearby, since 18 April 2026
- September 27, 2026 · score 50 · 0.0 km
- September 26, 2026 · score 50 · 0.0 km
- September 24, 2026 · score 50 · 0.0 km
How we know
One source: AIRNOW. Not yet confirmed by a second, independent source.
Our own score for this event is 14 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Air Quality |
| Severity | Low |
| Calamity Score (ours) | 14 / 100 |
| Legacy data-support index | 0.50/1 |
| Coordinates | 29.7510, -95.3510 |
| Timestamp | 2026-08-17T00:00:00.000Z |
| Source | https://www.airnow.gov/ |
Physical priority index · v1. 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: airnow. Occurrence: 2026-08-17T00:00:00.000Z.
First archived: 2026-08-17T22:28:28.185Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Aqi | 126 |
| Pm25Aqi | 64 |
| OzoneAqi | 126 |
| CategoryName | Unhealthy for Sensitive Groups |
| 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 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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?