SmogRank / Barra da Tijuca / Rio Claro
Barra da Tijuca vs Rio Claro: PM2.5 compared
Over the last year, Rio Claro's air was about 1.8× as polluted as Barra da Tijuca's: PM2.5 averaged 14.5 µg/m³ against 7.9, on the 279 days both cities were measured. Rio Claro had the dirtier air on 247 of those days, Barra da Tijuca on 29. Rio Claro was over the WHO's daily guideline of 15 µg/m³ on 103 of them, Barra da Tijuca on 29.
Right now
The last year, day by day
Month by month
Each city's worst days
Barra da Tijuca
- 11 Jun 202610236.1 µg/m³
- 28 Jun 20269432.2 µg/m³
- 12 Jun 20269030.3 µg/m³
Rio Claro
- 13 Aug 202611440.6 µg/m³
- 14 Aug 202610838.5 µg/m³
- 19 Aug 202610135.6 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Barra da Tijuca
Side by side with Acari (the nearest), Gujranwala (the world's worst on 30 days).
Rio Claro
Side by side with Limeira (the nearest), Nilópolis (Brazil's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Barra da Tijuca and Rio Claro, 13 Oct 2025 – 12 Oct 2026, smogrank.com/compare/br-barra-da-tijuca/br-rio-claro (accessed 13 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-13 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.