SmogRank / Campinas / Rio Claro
Campinas vs Rio Claro: PM2.5 compared
Over the last year, Rio Claro's air was 27% more polluted than Campinas's: PM2.5 averaged 14.1 µg/m³ against 11.1, on the 336 days both cities were measured. Rio Claro had the dirtier air on 242 of those days, Campinas on 88. Rio Claro was over the WHO's daily guideline of 15 µg/m³ on 116 of them, Campinas on 59.
Right now
The last year, day by day
Month by month
Year by year
| Year | Campinas | Rio Claro | Days Campinas was worse |
|---|---|---|---|
| 2026 so far | 11.0 | 14.7 | 58 |
| 2025 | 11.0 | 16.0 | 42 |
| 2024 | 17.8 | 20.7 | 108 |
| 2023 | 15.2 | 17.0 | 93 |
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
Campinas
- 25 Apr 20268326.3 µg/m³
- 30 Aug 20267924.3 µg/m³
- 17 Apr 20267924.2 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
Campinas
Side by side with Paulínia (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, Campinas and Rio Claro, 13 Oct 2025 – 12 Oct 2026, smogrank.com/compare/br-campinas/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 03:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.