What is the air quality trend in Guarulhos?

Over the past 14 days, Guarulhos had an average AQI of 50 based on station measurements. The worst day was 2026-07-09 with AQI 110.

How is Guarulhos air quality measured?

Air quality in Guarulhos 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 Guarulhos, Brazil

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

Historical PM2.5 and AQI trend from monitoring stations near Guarulhos, Brazil.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	33	8–72	8.6 µg/m³	9.9	24h	3
2026-07-20	33	9–85	8.9 µg/m³	10.5	24h	3
2026-07-19	36	8–75	9.3 µg/m³	10.5	24h	3
2026-07-18	30	7–78	7.4 µg/m³	8.6	24h	3
2026-07-17	51	18–92	14.8 µg/m³	17.7	24h	3
2026-07-16	62	19–94	18.7 µg/m³	22.3	24h	3
2026-07-15	50	15–80	13.9 µg/m³	16.0	24h	3
2026-07-14	30	9–65	7.3 µg/m³	8.2	24h	3
2026-07-13	15	8–36	3.6 µg/m³	4.4	24h	3
2026-07-12	26	7–78	6.4 µg/m³	7.3	24h	3
2026-07-11	70	19–114	21.9 µg/m³	26.4	24h	3
2026-07-10	91	29–153	30.5 µg/m³	36.8	24h	3
2026-07-09	110	79–152	38.9 µg/m³	50.0	24h	3
2026-07-08	74	24–126	23.4 µg/m³	28.6	23h	3

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