SmogRank / United States / Florida / Wellington
Wellington, month by month
Wellington, Florida has a measured daily mean on 1,277 days since 11 January 2023. Its worst month was July 2023, at 53 US AQI (10.2 µg/m³), 645th of 1,432 cities on that month's world ranking. Its cleanest was September 2025, at 19 US AQI (3.5 µg/m³). 2025 averaged 34 US AQI (6.2 µg/m³), against 35 US AQI (6.3 µg/m³) in 2024.
Every month since 2023
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
3 months
| Month | Why |
|---|---|
| Nov 2025 | 19 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| May 2023 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 11 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Wellington's worst months
| Month | US AQI | World rank |
|---|---|---|
| July 2023 | 5310.2 µg/m³ | 645thof 1,432 |
| March 2023 | 529.8 µg/m³ | 272ndof 911 |
| July 2026 | 488.7 µg/m³ | 1,689thof 2,784 |
| July 2024 | 488.6 µg/m³ | 1,137thof 2,566 |
| March 2025 | 468.3 µg/m³ | 1,885thof 2,862 |
| May 2024 | 468.2 µg/m³ | 1,238thof 2,684 |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Wellington's worst days
| Day | US AQI | Episode |
|---|---|---|
| 3 Oct 2023 | 12444.7 µg/m³ | South-eastern United States, October 2023 |
| 5 Jul 2023 | 7823.8 µg/m³ | – |
| 17 Aug 2026 | 7521.9 µg/m³ | – |
| 3 Mar 2023 | 7119.6 µg/m³ | – |
| 11 Jul 2024 | 6918.9 µg/m³ | – |
| 1 Jan 2024 | 6818.4 µg/m³ | – |
| 1 Mar 2023 | 6818.0 µg/m³ | – |
| 22 Aug 2023 | 6818.0 µg/m³ | – |
| 17 May 2024 | 6717.6 µg/m³ | – |
| 4 Jul 2026 | 6617.4 µg/m³ | – |
Daily means, the highest since 11 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Wellington, Florida, United States, 11 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/wellington/history (accessed 12 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.
Wellington now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).