SmogRank / Brazil / São Paulo / Sorocaba

Sorocaba, month by month

Sorocaba has a measured daily mean on 115 days since 19 June 2026. Its worst month was August 2026, at 68 US AQI (18.0 µg/m³), 292nd of 2,896 cities on that month's world ranking. Its cleanest was September 2026, at 48 US AQI (8.7 µg/m³).

Every month since 2026

2026too few days for a mean (a year needs 199)115 days measured
JanFebMarAprMayJun12 daysJul64#469Aug68#292Sep48#847Oct50#737
Each square is a month's mean PM2.5 in US AQI from Sorocaba'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 Sorocaba marked; each year, the year's. A dashed square is the running month, so far.
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

1 month
MonthWhy
Jun 202612 of 30 days measured; a month needs 21.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Sorocaba's worst months

MonthUS AQIDays measuredWorld rank
August 2026 6818.0 µg/m³31 of 31292ndof 2,896
July 2026 6416.1 µg/m³31 of 31469thof 2,784
September 2026 488.7 µg/m³30 of 30847thof 2,981

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.

Sorocaba's worst days

DayUS AQI
9 Jul 2026 10436.8 µg/m³
10 Jul 2026 10235.8 µg/m³
4 Aug 2026 9934.7 µg/m³
18 Aug 2026 9331.9 µg/m³
29 Aug 2026 9331.8 µg/m³
8 Jul 2026 8929.3 µg/m³
13 Aug 2026 8627.8 µg/m³
17 Aug 2026 8426.8 µg/m³
11 Jul 2026 8225.5 µg/m³
14 Aug 2026 8125.4 µg/m³

Daily means, the highest since 19 Jun 2026; 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, Sorocaba, Brazil, 19 Jun 2026 – 11 Oct 2026. Monitor data from CETESB, read from the publisher; sources listed at smogrank.com/sources. smogrank.com/br/sorocaba/history (accessed 12 Oct 2026).

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Sorocaba 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).