SmogRank / Paulínia / Rio Claro
Paulínia vs Rio Claro: PM2.5 compared
Over the last year, Rio Claro's air was 30% more polluted than Paulínia's: PM2.5 averaged 14.3 µg/m³ against 11.0, on the 324 days both cities were measured. Rio Claro had the dirtier air on 260 of those days, Paulínia on 62. Rio Claro was over the WHO's daily guideline of 15 µg/m³ on 118 of them, Paulínia on 53.
Right now
The last year, day by day
Month by month
Year by year
| Year | Paulínia | Rio Claro | Days Paulínia was worse |
|---|---|---|---|
| 2026 so far | 10.9 | 14.8 | 40 |
| 2025 | 12.2 | 16.0 | 38 |
| 2024 | 16.5 | 21.4 | 48 |
| 2023 | 14.0 | 17.1 | 61 |
Means in µg/m³, as in the chart above, over the days both cities were measured that year; a year shows once they share 30 such days.
Each city's worst days
Paulínia
- 17 Apr 20268024.4 µg/m³
- 10 Jun 20267924.2 µg/m³
- 30 Aug 20267924.0 µg/m³
Rio Claro
- 13 Aug 202611440.6 µg/m³
- 14 Aug 202610838.5 µg/m³
- 25 Apr 202610035.3 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
Paulínia
Side by side with Campinas (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, Paulínia and Rio Claro, 13 Oct 2025 – 12 Oct 2026, smogrank.com/compare/br-paulinia/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.