Palau vs Tonga: Exposure to air pollution from human sources

Palau

1.4 micrograms per cubic meter

in 2024

Tonga

1.52 micrograms per cubic meter

in 2024

Palau rank

227th

Tonga rank

225th

Exposure to air pollution from human sources over time

Palau
Tonga

How they compare

Tonga currently reports 1.52 micrograms per cubic meter against 1.4 micrograms per cubic meter in Palau, a difference of 0.12 micrograms per cubic meter.

That makes Tonga's figure about 1.1 times Palau's.

The two have swapped places 6 times across 27 shared years of data; in 1998 it was Tonga ahead.

Palau ranks 227th and Tonga ranks 225th of 240 countries.

Individual pages

About this data

Indicator: Exposure to air pollution from human sources
Unit: micrograms per cubic meter
Source: Energy Policy Institute at the University of Chicago (EPIC) (2026) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 240 places, 6,480 data points, 1998–2024
Last refreshed: 07 August 2026

Annual population-weighted average concentration of fine particulate matter (PM2.5) in the air, measured in micrograms per cubic meter (µg/m³). Fine particulate matter (PM2.5) are particles with a diameter of 2.5 micrometers or less, which can pose significant health risks. This data excludes natural sources of PM2.5, such as dust and sea salt, to focus on human-caused pollution.