SmogRank / United States / Florida / Fort Myers

Fort Myers, month by month

Fort Myers has a measured daily mean on 617 days since 12 December 2024. Its worst month was March 2025, at 47 US AQI (8.4 µg/m³), 1,867th of 2,862 cities on that month's world ranking. Its cleanest was September 2025, at 21 US AQI (3.8 µg/m³).

Every month since 2024

202634 so far250 days measured2,449th of 2,793 in the world
Jan34#2,081Feb36#2,357Mar38#2,404Apr36#2,046May34#1,912Jun40#1,374Jul44#1,882Aug16 daysSep23#2,711Oct26#2,314
202537 for the year347 days measured2,220th of 2,681 in the world
Jan38#1,766Feb40#1,779Mar47#1,867Apr45#1,736May35#1,828Jun42#1,920Jul42#1,887Aug28#2,697Sep21#2,973Oct26#2,219Nov37#1,996Dec36#2,350
2024too few days for a mean (a year needs 257)20 days measured
JanFebMarAprMayJunJulAugSepOctNovDec20 days
Each square is a month's mean PM2.5 in US AQI from Fort Myers's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Fort Myers marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

2 months
MonthWhy
Aug 202616 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Dec 202420 of 31 days measured; a month needs 22.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Fort Myers's worst months

MonthUS AQIDays measuredWorld rank
March 2025 478.4 µg/m³31 of 311,867thof 2,862
April 2025 458.1 µg/m³30 of 301,736thof 2,951
July 2026 448.0 µg/m³22 of 311,882ndof 2,784
June 2025 427.5 µg/m³30 of 301,920thof 2,508
July 2025 427.5 µg/m³31 of 311,887thof 2,889
February 2025 407.2 µg/m³28 of 281,779thof 2,633

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.

Fort Myers's worst days

DayUS AQI
1 Jan 2026 7823.5 µg/m³
9 Mar 2025 6416.3 µg/m³
9 Jan 2025 6416.2 µg/m³
9 Jul 2026 6416.1 µg/m³
8 Jul 2026 6315.7 µg/m³
28 Jun 2025 6114.3 µg/m³
25 Jul 2025 6114.2 µg/m³
13 Jul 2026 6114.2 µg/m³
17 Jan 2025 6014.1 µg/m³
26 Jul 2025 6013.7 µg/m³

Daily means, the highest since 12 Dec 2024; 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, Fort Myers, United States, 12 Dec 2024 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/fort-myers/history (accessed 12 Oct 2026).

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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.

Fort Myers now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 22:07 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).