SmogRank / Mexico / Nuevo León / Pesquería

Pesquería, month by month

Pesquería has a measured daily mean on 340 days since 24 September 2025. Its worst month was November 2025, at 71 US AQI (19.7 µg/m³), 418th of 2,715 cities on that month's world ranking. Its cleanest was September 2026, at 53 US AQI (10.2 µg/m³).

Every month since 2025

202659 so far250 days measured638th of 2,791 in the world
Jan63#717Feb63#752Mar59#1,007Apr61#604May58#523Jun53#637Jul63#489Aug62#384Sep53#636Oct4 days
2025too few days for a mean (a year needs 256)90 days measured
JanFebMarAprMayJunJulAugSep5 daysOct60#370Nov71#418Dec64#688
Each square is a month's mean PM2.5 in US AQI from Pesquería's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Pesquería marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

2 months
MonthWhy
Oct 20264 of 11 days measured; a month needs 8. The others: 1 with no readings from the monitor, 6 with readings for part of the day (a day needs 18 hours).
Sep 20255 of 30 days measured; a month needs 21. The others: 2 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.

Pesquería's worst months

MonthUS AQIDays measuredWorld rankEpisode
November 2025 7119.7 µg/m³29 of 30418thof 2,715–
December 2025 6415.9 µg/m³27 of 31688thof 3,006–
January 2026 6315.7 µg/m³31 of 31717thof 2,617–
February 2026 6315.5 µg/m³26 of 28752ndof 2,866Southern United States and Mexico, February 2026
July 2026 6315.5 µg/m³31 of 31489thof 2,784–
August 2026 6215.1 µg/m³24 of 31384thof 2,896–

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.

Pesquería's worst days

DayUS AQIEpisode
20 Feb 2026 12143.5 µg/m³Southern United States and Mexico, February 2026
8 Jan 2026 11039.3 µg/m³–
19 Nov 2025 10035.4 µg/m³–
2 Jan 2026 9934.9 µg/m³–
1 Jan 2026 9733.7 µg/m³–
7 Jan 2026 9432.0 µg/m³–
21 Feb 2026 9231.1 µg/m³–
18 May 2026 9231.0 µg/m³–
7 Nov 2025 9130.7 µg/m³–
18 Nov 2025 9130.4 µg/m³–

Daily means, the highest since 24 Sept 2025; 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, Pesquería, Mexico, 24 Sep 2025 – 4 Oct 2026. Monitor data from Sinaica Mexico via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/mx/pesqueria/history (accessed 12 Oct 2026).

Download chart (PNG)

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.

Pesquería now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 20:07 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).