SmogRank / United States / Tennessee / Nashville
Nashville, month by month
Nashville has a measured daily mean on 1,089 days since 7 February 2023. Its worst month was February 2026, at 55 US AQI (11.1 µg/m³), 1,172nd of 2,866 cities on that month's world ranking. Its cleanest was September 2024, at 32 US AQI (5.8 µg/m³). 2025 averaged 45 US AQI (8.1 µg/m³), against 45 US AQI (8.1 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
10 months
| Month | Why |
|---|---|
| May 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2026 | 11 of 30 days measured; a month needs 21. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jan 2024 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Sep 2023 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Aug 2023 | 4 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Jul 2023 | 1 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Jun 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2023 | No day measured. The others: 31 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.
Nashville's worst months
| Month | US AQI | World rank |
|---|---|---|
| February 2026 | 5511.1 µg/m³ | 1,172ndof 2,866 |
| August 2024 | 5410.5 µg/m³ | 531stof 2,010 |
| March 2023 | 5310.4 µg/m³ | 229thof 911 |
| January 2026 | 5310.0 µg/m³ | 1,109thof 2,617 |
| June 2025 | 529.9 µg/m³ | 1,326thof 2,508 |
| November 2023 | 529.8 µg/m³ | 668thof 2,243 |
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.
Nashville's worst days
| Day | US AQI | Episode |
|---|---|---|
| 5 Jul 2025 | 8929.3 µg/m³ | North-eastern United States, July 2025 |
| 4 Jan 2026 | 7924.0 µg/m³ | – |
| 4 Feb 2026 | 7823.5 µg/m³ | – |
| 1 Aug 2024 | 7723.3 µg/m³ | – |
| 29 Jan 2026 | 7723.0 µg/m³ | – |
| 22 Mar 2023 | 7722.9 µg/m³ | – |
| 4 Jun 2025 | 7521.8 µg/m³ | – |
| 15 Feb 2026 | 7521.8 µg/m³ | – |
| 3 Jun 2025 | 7421.4 µg/m³ | – |
| 7 Sept 2023 | 7321.1 µg/m³ | – |
Daily means, the highest since 7 Feb 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, Nashville, United States, 7 Feb 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/nashville/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.
Nashville 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).