East Hampton vs Poquoson: PM2.5 compared

Over the last year, East Hampton's air was 35% more polluted than Poquoson's: PM2.5 averaged 10.7 µg/m³ against 7.9, on the 113 days both cities were measured. East Hampton had the dirtier air on 62 of those days, Poquoson on 46. East Hampton was over the WHO's daily guideline of 15 µg/m³ on 27 of them, Poquoson on 5.

Right now

East Hampton#679on the 24-hour board of 2,753, at 53 US AQI (10.3 µg/m³)

Poquoson#963on the 24-hour board of 2,753, at 48 US AQI (8.7 µg/m³)

The last year, day by day

East Hampton

Poquoson

Each city's daily mean from 9 Oct 2025 to 8 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Monthly means in µg/m³ over the days both cities were measured. Solid: East Hampton. Faded: Poquoson. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Each city's worst days

East Hampton

17 Jul 202617995.8 µg/m³
18 Jul 202612344.6 µg/m³
20 Jul 20269432.3 µg/m³

Poquoson

17 Jul 202616068.8 µg/m³
18 Jul 20268225.7 µg/m³
20 Jul 20266918.9 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

East Hampton

Side by side with Mecca (United States's worst on 30 days), Gujranwala (the world's worst on 30 days).

Poquoson

Side by side with Mecca (United States's worst on 30 days), Gujranwala (the world's worst on 30 days).

Use this page

SmogRank, PM2.5 daily means compared, East Hampton and Poquoson, 9 Oct 2025 – 8 Oct 2026, smogrank.com/compare/us-east-hampton/us-poquoson (accessed 9 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 2026-10-09 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).