SmogRank / United States / Florida / Oak Ridge
Oak Ridge, month by month
Oak Ridge has a measured daily mean on 770 days since 29 July 2024. Its worst month was July 2026, at 51 US AQI (9.2 µg/m³), 1,562nd of 2,784 cities on that month's world ranking. Its cleanest was September 2026, at 26 US AQI (4.7 µg/m³).
Every month since 2024
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 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Oct 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. |
| Jul 2024 | 3 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.
Oak Ridge's worst months
| Month | US AQI | World rank |
|---|---|---|
| July 2026 | 519.2 µg/m³ | 1,562ndof 2,784 |
| March 2025 | 509.0 µg/m³ | 1,776thof 2,862 |
| April 2025 | 478.4 µg/m³ | 1,655thof 2,951 |
| July 2025 | 478.4 µg/m³ | 1,676thof 2,889 |
| June 2025 | 468.3 µg/m³ | 1,760thof 2,508 |
| May 2025 | 458.1 µg/m³ | 1,320thof 2,826 |
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.
Oak Ridge's worst days
| Day | US AQI |
|---|---|
| 5 Jun 2025 | 7321.0 µg/m³ |
| 25 Jul 2025 | 7220.3 µg/m³ |
| 26 Jul 2025 | 6918.9 µg/m³ |
| 10 Jul 2026 | 6717.7 µg/m³ |
| 3 May 2025 | 6616.9 µg/m³ |
| 9 Jul 2026 | 6616.9 µg/m³ |
| 6 Jun 2025 | 6516.7 µg/m³ |
| 9 Jun 2025 | 6516.5 µg/m³ |
| 7 May 2025 | 6416.3 µg/m³ |
| 8 Mar 2025 | 6315.8 µg/m³ |
Daily means, the highest since 29 Jul 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, Oak Ridge, United States, 29 Jul 2024 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/oak-ridge-florida/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.
Oak Ridge 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).