SmogRank / United States / Texas / Socorro
Socorro, month by month
Socorro, Texas has a measured daily mean on 1,183 days since 1 January 2023. Its worst month was April 2025, at 79 US AQI (23.9 µg/m³), 250th of 2,951 cities on that month's world ranking. Its cleanest was September 2025, at 26 US AQI (4.7 µg/m³). 2025 averaged 59 US AQI (13.2 µg/m³), against 42 US AQI (7.6 µg/m³) in 2023.
Every month since 2023
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
7 months
| Month | Why |
|---|---|
| Dec 2024 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Nov 2024 | 15 of 30 days measured; a month needs 21. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | 6 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 2 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Socorro's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| April 2025 | 7923.9 µg/m³ | 250thof 2,951 | South-western United States and Mexico, April 2025 |
| March 2025 | 7823.6 µg/m³ | 451stof 2,862 | South-western United States and Mexico, March 2025 |
| February 2025 | 6516.7 µg/m³ | 777thof 2,633 | – |
| December 2025 | 6315.5 µg/m³ | 703rdof 3,006 | – |
| May 2025 | 6114.6 µg/m³ | 419thof 2,826 | South-western United States and Mexico, May 2025 |
| April 2024 | 5913.2 µg/m³ | 567thof 2,520 | – |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Socorro's worst days
| Day | US AQI | Episode |
|---|---|---|
| 1 Apr 2025 | 227152.0 µg/m³ | South-western United States and Mexico, April 2025 |
| 27 Apr 2025 | 203128.0 µg/m³ | – |
| 6 Mar 2025 | 193116.0 µg/m³ | – |
| 3 Mar 2025 | 184102.0 µg/m³ | – |
| 18 Mar 2025 | 17792.5 µg/m³ | South-western United States and Mexico, March 2025 |
| 18 Apr 2025 | 17691.8 µg/m³ | – |
| 25 Apr 2024 | 15966.7 µg/m³ | – |
| 11 Feb 2025 | 15662.5 µg/m³ | – |
| 13 May 2025 | 15055.3 µg/m³ | South-western United States and Mexico, May 2025 |
| 23 Nov 2024 | 14754.0 µg/m³ | – |
Daily means, the highest since 1 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Socorro, Texas, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/socorro/history (accessed 12 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Socorro now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).