SmogRank / United States / Kentucky / Owensboro
Owensboro, month by month
Owensboro has a measured daily mean on 878 days since 1 January 2023. Its worst month was June 2023, at 72 US AQI (20.4 µg/m³), 261st of 1,603 cities on that month's world ranking. Its cleanest was May 2025, at 36 US AQI (6.5 µg/m³).
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
17 months
| Month | Why |
|---|---|
| Dec 2024 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Nov 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | No day measured. The others: 1 missing from OpenAQ's archive, 30 with under 18 hours of readings or readings that failed our checks. |
| Feb 2024 | No day measured. The others: 1 missing from OpenAQ's archive, 28 with under 18 hours of readings or readings that failed our checks. |
| Jan 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Dec 2023 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2023 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Sep 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2023 | 6 of 31 days measured; a month needs 22. The others: 25 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.
Owensboro's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| June 2023 | 7220.4 µg/m³ | 261stof 1,603 | Eastern United States and Canada, June and July 2023 United States and Canada, June 2023and 1 more |
| September 2025 | 5611.7 µg/m³ | 490thof 3,104 | – |
| July 2023 | 5511.3 µg/m³ | 491stof 1,432 | United States and Canada, July 2023 Eastern United States and Canada, June and July 2023 |
| June 2025 | 5410.9 µg/m³ | 1,044thof 2,508 | – |
| July 2026 | 5310.4 µg/m³ | 1,259thof 2,784 | North-eastern United States, June and July 2026 |
| February 2026 | 5310.2 µg/m³ | 1,347thof 2,866 | – |
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.
Owensboro's worst days
| Day | US AQI | Episode |
|---|---|---|
| 28 Jun 2023 | 17082.2 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 16 Jul 2023 | 11641.6 µg/m³ | United States and Canada, July 2023 |
| 8 Jun 2023 | 10637.6 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 27 Jun 2023 | 9733.7 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 6 Jun 2023 | 8929.6 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 13 Mar 2025 | 8829.2 µg/m³ | – |
| 29 Jun 2023 | 8829.0 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 7 Jun 2023 | 8628.1 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 9 Jun 2023 | 8527.3 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 16 Jun 2023 | 8426.7 µg/m³ | United States and Canada, June 2023 |
Daily means, the highest since 1 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, Owensboro, United States, 1 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/owensboro/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.
Owensboro now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).