SmogRank / United States / Kansas / Leawood
Leawood, month by month
Leawood has a measured daily mean on 604 days since 28 January 2025. Its worst month was August 2026, at 51 US AQI (9.3 µg/m³), 1,098th of 2,896 cities on that month's world ranking. Its cleanest was June 2026, at 24 US AQI (4.4 µg/m³).
Every month since 2025
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
1 month
| Month | Why |
|---|---|
| Jan 2025 | 4 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.
Leawood's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| August 2026 | 519.3 µg/m³ | 1,098thof 2,896 | – |
| July 2026 | 519.1 µg/m³ | 1,581stof 2,784 | – |
| August 2025 | 498.9 µg/m³ | 1,517thof 2,901 | North-eastern United States and Canada, 29 July to 9 August 2025 |
| June 2025 | 468.3 µg/m³ | 1,760thof 2,508 | – |
| March 2025 | 448.0 µg/m³ | 1,927thof 2,862 | United States and Mexico, March 2025 |
| July 2025 | 437.7 µg/m³ | 1,850thof 2,889 | North-eastern United States and Canada, 29 July to 9 August 2025 |
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.
Leawood's worst days
| Day | US AQI | Episode |
|---|---|---|
| 14 Mar 2025 | 12244.2 µg/m³ | United States and Mexico, March 2025 |
| 1 Aug 2025 | 12244.1 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 2 Aug 2025 | 8929.4 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 4 Jun 2025 | 7522.0 µg/m³ | – |
| 20 Nov 2025 | 7320.9 µg/m³ | – |
| 15 Mar 2025 | 7120.0 µg/m³ | United States and Mexico, March 2025 |
| 20 Mar 2026 | 6818.4 µg/m³ | – |
| 4 Jul 2025 | 6818.1 µg/m³ | – |
| 4 Sept 2025 | 6717.7 µg/m³ | – |
| 19 Nov 2025 | 6717.7 µg/m³ | – |
Daily means, the highest since 28 Jan 2025; 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, Leawood, United States, 28 Jan 2025 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/leawood/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.
Leawood now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 23:07 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).