What is the air quality trend in Heroica Matamoros?

Over the past 14 days, Heroica Matamoros had an average AQI of 42 based on station measurements. The worst day was 2026-05-18 with AQI 68.

How is Heroica Matamoros air quality measured?

Air quality in Heroica Matamoros 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 Heroica Matamoros, Mexico

Name: Heroica Matamoros Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Heroica Matamoros, Mexico.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

320h

PM2.5 Station

320h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	28	9–48	6.7 µg/m³	24h	2
2026-05-27	31	9–55	7.6 µg/m³	24h	2
2026-05-26	37	20–74	9.5 µg/m³	24h	2
2026-05-25	39	23–68	9.7 µg/m³	23h	2
2026-05-24	40	13–70	10.3 µg/m³	23h	2
2026-05-23	36	10–59	8.7 µg/m³	24h	2
2026-05-22	42	13–152	11.3 µg/m³	23h	2
2026-05-21	37	8–60	9.0 µg/m³	24h	2
2026-05-20	52	32–97	13.4 µg/m³	23h	2
2026-05-19	51	10–69	13.2 µg/m³	21h	3
2026-05-18	68	32–110	20.4 µg/m³	23h	2
2026-05-17	57	33–110	15.7 µg/m³	23h	2
2026-05-16	36	15–65	8.8 µg/m³	19h	3
2026-05-15	36	20–74	8.9 µg/m³	22h	2

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