SmogRank / Presidente Prudente / Rio Claro

Presidente Prudente vs Rio Claro: PM2.5 compared

Over the last year, Rio Claro's air was about 1.7× as polluted as Presidente Prudente's: PM2.5 averaged 14.2 µg/m³ against 8.5, on the 328 days both cities were measured. Rio Claro had the dirtier air on 276 of those days, Presidente Prudente on 51. Rio Claro was over the WHO's daily guideline of 15 µg/m³ on 116 of them, Presidente Prudente on 17.

Right now

Presidente Prudente#1,354on the 24-hour board of 2,516, at 31 US AQI (5.6 µg/m³)
Rio Claro#338on the 24-hour board of 2,516, at 61 US AQI (14.2 µg/m³)

The last year, day by day

Presidente Prudente
Rio Claro
Each city's daily mean from 12 Oct 2025 to 11 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Presidente Prudente, Nov 2025: 7.3 µg/m³Rio Claro, Nov 2025: 12.8 µg/m³Nov2025Presidente Prudente, Dec 2025: 6.9 µg/m³Rio Claro, Dec 2025: 10.3 µg/m³DecPresidente Prudente, Jan 2026: 8.2 µg/m³Rio Claro, Jan 2026: 9.3 µg/m³Jan2026Presidente Prudente, Feb 2026: 10.0 µg/m³Rio Claro, Feb 2026: 9.3 µg/m³FebPresidente Prudente, Mar 2026: 10.3 µg/m³Rio Claro, Mar 2026: 13.7 µg/m³MarPresidente Prudente, Apr 2026: 11.4 µg/m³Rio Claro, Apr 2026: 16.1 µg/m³AprMayPresidente Prudente, Jun 2026: 6.7 µg/m³Rio Claro, Jun 2026: 16.0 µg/m³JunPresidente Prudente, Jul 2026: 7.9 µg/m³Rio Claro, Jul 2026: 17.7 µg/m³JulPresidente Prudente, Aug 2026: 11.1 µg/m³Rio Claro, Aug 2026: 21.9 µg/m³AugPresidente Prudente, Sep 2026: 7.0 µg/m³Rio Claro, Sep 2026: 14.1 µg/m³SepPresidente Prudente, Oct 2026: 5.9 µg/m³Rio Claro, Oct 2026: 15.4 µg/m³Oct
Monthly means in µg/m³ over the days both cities were measured. Solid: Presidente Prudente. Faded: Rio Claro. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Year by year

YearPresidente PrudenteRio ClaroDays both measuredDays Presidente Prudente was worse
2026 so far496224742
2025486630525
2024648012616

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Presidente Prudente

Rio Claro

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

Presidente Prudente

Side by side with Bauru (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, Presidente Prudente and Rio Claro, 12 Oct 2025 – 11 Oct 2026, smogrank.com/compare/br-presidente-prudente/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 02:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.