What is the air quality trend in Santa María Chimalhuacán?

Over the past 14 days, Santa María Chimalhuacán had an average AQI of 47 based on station measurements. The worst day was 2026-05-18 with AQI 62.

How is Santa María Chimalhuacán air quality measured?

Air quality in Santa María Chimalhuacán is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Santa María Chimalhuacán, Mexico

Name: Santa María Chimalhuacán Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Santa María Chimalhuacán, Mexico.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 17 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	39	26–56	9.5 µg/m³	24h	24
2026-05-27	43	26–63	10.6 µg/m³	24h	23
2026-05-26	49	28–158	13.5 µg/m³	24h	24
2026-05-25	44	29–64	10.8 µg/m³	24h	24
2026-05-24	43	26–141	11.1 µg/m³	24h	22
2026-05-23	52	32–144	13.6 µg/m³	24h	24
2026-05-22	48	35–68	12.0 µg/m³	24h	26
2026-05-21	48	30–68	11.9 µg/m³	24h	24
2026-05-20	47	32–74	12.0 µg/m³	24h	24
2026-05-19	54	33–67	14.1 µg/m³	24h	25
2026-05-18	62	36–116	17.7 µg/m³	24h	25
2026-05-17	52	30–72	13.5 µg/m³	24h	22
2026-05-16	38	2–67	9.4 µg/m³	22h	20
2026-05-15	40	26–49	9.5 µg/m³	23h	23

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