SmogRank / United States / Texas

Air quality in Deer Park

Texas, United States. PM2.5 from 1 reference monitor, updated hourly.

4.0 µg/m³
Good

Latest hour (12:00 UTC), 0.3× the WHO 24-hour guideline.

Rank

24 h
–
not enough data
7 days
#572
of 2,333 · 9.7 µg/m³
30 days
#715
of 2,331 · 7.6 µg/m³
Year
–
not enough data

Why it ranks here

Likely fire smoke. On Sep 24, when Deer Park averaged 17.2 µg/m³ (its typical day: 9.2), NASA satellites detected 107 fires within 300 km (23 within 100 km). Smoke from those fires is a likely contributor; we don't check which way the wind blew, and mapped smoke can be high above the ground.

Based on Deer Park's own measurements, with fire detections from NASA FIRMS and smoke maps from NOAA HMS; causes are the usual kinds for a pattern like this, not a confirmed source.

Last 4 days, hour by hour

15302026-10-01 00:00 UTC: 4.5 µg/m³2026-10-01 01:00 UTC: 4.2 µg/m³2026-10-01 02:00 UTC: 4.5 µg/m³2026-10-01 03:00 UTC: 4.2 µg/m³2026-10-01 04:00 UTC: 4.0 µg/m³2026-10-01 05:00 UTC: 4.0 µg/m³2026-10-01 06:00 UTC: 3.9 µg/m³2026-10-01 07:00 UTC: 3.8 µg/m³2026-10-01 08:00 UTC: 3.9 µg/m³2026-10-01 09:00 UTC: 4.0 µg/m³2026-10-01 10:00 UTC: 4.3 µg/m³2026-10-01 11:00 UTC: 4.6 µg/m³2026-10-01 12:00 UTC: 4.0 µg/m³Sep 28Sep 29Sep 30Oct 1

Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: no data2025-09-30: no data2025-10-01: no data2025-10-02: no data2025-10-03: no data2025-10-04: no data2025-10-05: no data2025-10-06: no data2025-10-07: no data2025-10-08: no data2025-10-09: no data2025-10-10: no data2025-10-11: no data2025-10-12: no data2025-10-13: no data2025-10-14: no data2025-10-15: no data2025-10-16: no data2025-10-17: no data2025-10-18: no data2025-10-19: no data2025-10-20: no data2025-10-21: no data2025-10-22: no data2025-10-23: no data2025-10-24: no data2025-10-25: no data2025-10-26: no data2025-10-27: no data2025-10-28: no data2025-10-29: no data2025-10-30: no data2025-10-31: no data2025-11-01: no data2025-11-02: no data2025-11-03: no data2025-11-04: no data2025-11-05: no data2025-11-06: no data2025-11-07: no data2025-11-08: no data2025-11-09: no data2025-11-10: no data2025-11-11: no data2025-11-12: no data2025-11-13: no data2025-11-14: no data2025-11-15: no data2025-11-16: no data2025-11-17: no 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data2026-01-09: no data2026-01-10: no data2026-01-11: no data2026-01-12: no data2026-01-13: no data2026-01-14: no data2026-01-15: no data2026-01-16: no data2026-01-17: no data2026-01-18: no data2026-01-19: no data2026-01-20: no data2026-01-21: no data2026-01-22: no data2026-01-23: no data2026-01-24: no data2026-01-25: no data2026-01-26: no data2026-01-27: no data2026-01-28: no data2026-01-29: no data2026-01-30: no data2026-01-31: no data2026-02-01: no data2026-02-02: no data2026-02-03: no data2026-02-04: no data2026-02-05: no data2026-02-06: no data2026-02-07: no data2026-02-08: no data2026-02-09: no data2026-02-10: no data2026-02-11: no data2026-02-12: no data2026-02-13: no data2026-02-14: no data2026-02-15: no data2026-02-16: no data2026-02-17: no data2026-02-18: no data2026-02-19: no data2026-02-20: no data2026-02-21: no data2026-02-22: no data2026-02-23: no data2026-02-24: no data2026-02-25: no data2026-02-26: no data2026-02-27: no data2026-02-28: no data2026-03-01: no data2026-03-02: no data2026-03-03: no data2026-03-04: no data2026-03-05: no data2026-03-06: no data2026-03-07: no data2026-03-08: no data2026-03-09: no data2026-03-10: no data2026-03-11: no data2026-03-12: no data2026-03-13: no data2026-03-14: no data2026-03-15: no data2026-03-16: no data2026-03-17: no data2026-03-18: no data2026-03-19: no data2026-03-20: no data2026-03-21: no data2026-03-22: no data2026-03-23: no data2026-03-24: no data2026-03-25: no data2026-03-26: no data2026-03-27: no data2026-03-28: no data2026-03-29: no data2026-03-30: no data2026-03-31: no data2026-04-01: no data2026-04-02: no data2026-04-03: no data2026-04-04: no data2026-04-05: no data2026-04-06: no data2026-04-07: 4.6 µg/m³2026-04-08: 6.4 µg/m³2026-04-09: 9.9 µg/m³2026-04-10: 11.3 µg/m³2026-04-11: 9.7 µg/m³2026-04-12: 8.3 µg/m³2026-04-13: 8.4 µg/m³2026-04-14: 9.9 µg/m³2026-04-15: 9.1 µg/m³2026-04-16: 11.0 µg/m³2026-04-17: 11.5 µg/m³2026-04-18: 8.9 µg/m³2026-04-19: 6.0 µg/m³2026-04-20: 20.2 µg/m³2026-04-21: 28.0 µg/m³2026-04-22: 11.5 µg/m³2026-04-23: 7.1 µg/m³2026-04-24: 10.4 µg/m³2026-04-25: 13.4 µg/m³2026-04-26: 10.7 µg/m³2026-04-27: 15.6 µg/m³2026-04-28: 13.6 µg/m³2026-04-29: 12.7 µg/m³2026-04-30: 9.5 µg/m³2026-05-01: 2.2 µg/m³2026-05-02: 6.3 µg/m³2026-05-03: 10.6 µg/m³2026-05-04: 6.0 µg/m³2026-05-05: 8.8 µg/m³2026-05-06: 16.7 µg/m³2026-05-07: 11.0 µg/m³2026-05-08: 12.0 µg/m³2026-05-09: 11.0 µg/m³2026-05-10: 11.4 µg/m³2026-05-11: 6.7 µg/m³2026-05-12: 10.3 µg/m³2026-05-13: 13.0 µg/m³2026-05-14: 9.9 µg/m³2026-05-15: 6.8 µg/m³2026-05-16: 9.2 µg/m³2026-05-17: 13.2 µg/m³2026-05-18: 13.3 µg/m³2026-05-19: 11.6 µg/m³2026-05-20: 5.6 µg/m³2026-05-21: 8.7 µg/m³2026-05-22: 6.9 µg/m³2026-05-23: 5.3 µg/m³2026-05-24: 7.3 µg/m³2026-05-25: 8.7 µg/m³2026-05-26: 4.7 µg/m³2026-05-27: 5.4 µg/m³2026-05-28: 9.5 µg/m³2026-05-29: 6.9 µg/m³2026-05-30: 8.5 µg/m³2026-05-31: 7.9 µg/m³2026-06-01: 9.0 µg/m³2026-06-02: 7.8 µg/m³2026-06-03: 7.4 µg/m³2026-06-04: 7.2 µg/m³2026-06-05: 5.6 µg/m³2026-06-06: 7.4 µg/m³2026-06-07: 16.0 µg/m³2026-06-08: 13.2 µg/m³2026-06-09: 8.5 µg/m³2026-06-10: 7.7 µg/m³2026-06-11: 7.3 µg/m³2026-06-12: 8.8 µg/m³2026-06-13: 12.7 µg/m³2026-06-14: 13.2 µg/m³2026-06-15: 9.5 µg/m³2026-06-16: 6.3 µg/m³2026-06-17: 8.4 µg/m³2026-06-18: 19.2 µg/m³2026-06-19: 15.3 µg/m³2026-06-20: 7.8 µg/m³2026-06-21: 8.2 µg/m³2026-06-22: 13.3 µg/m³2026-06-23: 16.2 µg/m³2026-06-24: 19.1 µg/m³2026-06-25: 14.8 µg/m³2026-06-26: 11.6 µg/m³2026-06-27: 14.4 µg/m³2026-06-28: 15.7 µg/m³2026-06-29: 18.8 µg/m³2026-06-30: 11.3 µg/m³2026-07-01: 11.5 µg/m³2026-07-02: 9.3 µg/m³2026-07-03: 8.7 µg/m³2026-07-04: 7.7 µg/m³2026-07-05: 8.8 µg/m³2026-07-06: 6.6 µg/m³2026-07-07: 6.8 µg/m³2026-07-08: 7.9 µg/m³2026-07-09: 7.0 µg/m³2026-07-10: 10.5 µg/m³2026-07-11: 10.5 µg/m³2026-07-12: 10.7 µg/m³2026-07-13: 11.3 µg/m³2026-07-14: 9.2 µg/m³2026-07-15: 13.1 µg/m³2026-07-16: 21.0 µg/m³2026-07-17: 14.7 µg/m³2026-07-18: 15.8 µg/m³2026-07-19: 16.5 µg/m³2026-07-20: 18.6 µg/m³2026-07-21: 17.0 µg/m³2026-07-22: 17.6 µg/m³2026-07-23: 13.2 µg/m³2026-07-24: 17.8 µg/m³2026-07-25: 16.4 µg/m³2026-07-26: 7.5 µg/m³2026-07-27: 8.1 µg/m³2026-07-28: 13.2 µg/m³2026-07-29: 11.3 µg/m³2026-07-30: 9.1 µg/m³2026-07-31: 9.8 µg/m³2026-08-01: 8.8 µg/m³2026-08-02: 10.0 µg/m³2026-08-03: 13.1 µg/m³2026-08-04: 20.3 µg/m³2026-08-05: 18.7 µg/m³2026-08-06: 9.7 µg/m³2026-08-07: 8.6 µg/m³2026-08-08: 8.6 µg/m³2026-08-09: 4.4 µg/m³2026-08-10: 4.4 µg/m³2026-08-11: 7.0 µg/m³2026-08-12: 7.8 µg/m³2026-08-13: 15.5 µg/m³2026-08-14: 17.8 µg/m³2026-08-15: 15.8 µg/m³2026-08-16: 10.6 µg/m³2026-08-17: 8.3 µg/m³2026-08-18: 9.2 µg/m³2026-08-19: 9.0 µg/m³2026-08-20: 13.5 µg/m³2026-08-21: 15.9 µg/m³2026-08-22: 16.2 µg/m³2026-08-23: 14.8 µg/m³2026-08-24: 13.1 µg/m³2026-08-25: 9.5 µg/m³2026-08-26: 9.7 µg/m³2026-08-27: 8.1 µg/m³2026-08-28: 8.5 µg/m³2026-08-29: 11.2 µg/m³2026-08-30: 7.5 µg/m³2026-08-31: 9.2 µg/m³2026-09-01: 7.5 µg/m³2026-09-02: 9.2 µg/m³2026-09-03: 6.8 µg/m³2026-09-04: 5.3 µg/m³2026-09-05: 5.5 µg/m³2026-09-06: 5.6 µg/m³2026-09-07: 6.3 µg/m³2026-09-08: 5.9 µg/m³2026-09-09: 6.0 µg/m³2026-09-10: 4.3 µg/m³2026-09-11: 6.2 µg/m³2026-09-12: 6.6 µg/m³2026-09-13: 4.3 µg/m³2026-09-14: 5.2 µg/m³2026-09-15: 8.9 µg/m³2026-09-16: 7.2 µg/m³2026-09-17: 8.1 µg/m³2026-09-18: 8.7 µg/m³2026-09-19: 6.9 µg/m³2026-09-20: 6.6 µg/m³2026-09-21: 5.9 µg/m³2026-09-22: 10.7 µg/m³2026-09-23: 13.7 µg/m³2026-09-24: 17.2 µg/m³2026-09-25: 11.4 µg/m³2026-09-26: 11.2 µg/m³2026-09-27: 6.6 µg/m³2026-09-28: 6.8 µg/m³2026-09-29: 5.1 µg/m³2026-09-30: no data
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

27 of 176 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#2176MayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15JanFebMarApr 2026: 11.2 µg/m³AprMay 2026: 8.9 µg/m³MayJun 2026: 11.4 µg/m³JunJul 2026: 11.8 µg/m³JulAug 2026: 11.1 µg/m³AugSep 2026: 7.6 µg/m³SepOctNovDec

Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
Houston Deer Park C3US Public DomainAirNowReference

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in United States

Calexico 23.0Jurupa Valley 12.9Riverside 12.3Little Rock 12.2Hanford 11.9Oceanside 11.8Laredo 11.4Shreveport 11.0Wake Forest 11.0Corcoran 11.0Fontana 11.0West Memphis 10.9

30-day averages, µg/m³. All of United States →

Updated 2026-10-01 13:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.