What is the air quality trend in Santa María Chimalhuacán?

Over the past 15 days, Santa María Chimalhuacán had an average AQI of 45 based on station measurements. The worst day was 2026-05-18 with AQI 55.

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

332h

PM2.5 Station

332h · 15 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	31	18–58	7.5 µg/m³	14h	10
2026-05-28	39	24–63	9.8 µg/m³	24h	11
2026-05-27	45	21–123	11.9 µg/m³	24h	10
2026-05-26	45	21–169	13.3 µg/m³	24h	11
2026-05-25	49	26–182	15.0 µg/m³	24h	10
2026-05-24	40	25–59	9.6 µg/m³	24h	10
2026-05-23	52	28–164	15.9 µg/m³	24h	12
2026-05-22	45	32–71	11.0 µg/m³	24h	11
2026-05-21	51	38–64	12.9 µg/m³	24h	11
2026-05-20	45	33–63	11.0 µg/m³	24h	12
2026-05-19	52	29–64	13.3 µg/m³	24h	11
2026-05-18	55	28–171	16.2 µg/m³	24h	11
2026-05-17	48	23–65	12.1 µg/m³	23h	10
2026-05-16	39	10–58	9.4 µg/m³	22h	10
2026-05-15	52	45–59	13.1 µg/m³	9h	12

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