SmogRank / Mexico / Guanajuato / Abasolo
Abasolo, month by month
Abasolo has a measured daily mean on 1,028 days since 1 January 2023. Its worst month was May 2023, at 77 US AQI (23.0 µg/m³), 89th of 1,600 cities on that month's world ranking. Its cleanest was September 2025, at 39 US AQI (7.1 µg/m³). 2025 averaged 59 US AQI (13.2 µg/m³), against 59 US AQI (13.2 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
12 months
| Month | Why |
|---|---|
| May 2026 | 14 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 17 of 28 days measured; a month needs 20. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Nov 2025 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Aug 2025 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 14 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | No day measured. The others: 31 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 | 12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 10 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks. |
| 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.
Abasolo's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| May 2023 | 7723.0 µg/m³ | 89thof 1,600 | Guanajuato and Jalisco, Mexico, May 2023 |
| May 2024 | 7119.8 µg/m³ | 154thof 2,684 | – |
| December 2024 | 7019.4 µg/m³ | 281stof 2,616 | Guanajuato, México and Mexico City, Mexico, December 2024 |
| January 2026 | 6918.6 µg/m³ | 527thof 2,617 | Mexico, January 2026 Southern Mexico, January 2026 |
| January 2023 | 6818.4 µg/m³ | 171stof 1,261 | – |
| December 2025 | 6818.3 µg/m³ | 582ndof 3,006 | – |
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.
Abasolo's worst days
| Day | US AQI | Episode |
|---|---|---|
| 23 May 2023 | 15866.1 µg/m³ | – |
| 1 Jan 2026 | 15459.8 µg/m³ | Southern Mexico, January 2026 |
| 1 Jan 2024 | 13448.9 µg/m³ | Southern Mexico, January 2024 |
| 7 Jan 2026 | 11239.8 µg/m³ | Mexico, January 2026 |
| 31 Dec 2024 | 11139.5 µg/m³ | – |
| 5 May 2023 | 11039.2 µg/m³ | Guanajuato and Jalisco, Mexico, May 2023 |
| 6 May 2023 | 9633.0 µg/m³ | – |
| 7 May 2023 | 9532.9 µg/m³ | – |
| 14 Dec 2024 | 9432.2 µg/m³ | – |
| 29 Dec 2024 | 9432.0 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, Abasolo, Mexico, 1 Jan 2023 – 10 Oct 2026. Monitor data from Sinaica Mexico via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/mx/abasolo/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.
Abasolo now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 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).