SmogRank / France / Provence-Alpes-Côte d'Azur / Nice
Nice, month by month
Nice has a measured daily mean on 1,045 days since 11 January 2023. Its worst month was July 2026, at 63 US AQI (15.3 µg/m³), 503rd of 2,784 cities on that month's world ranking. Its cleanest was September 2025, at 33 US AQI (6.0 µg/m³). 2025 averaged 45 US AQI (8.1 µg/m³), against 52 US AQI (9.5 µg/m³) in 2023.
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
15 months
| Month | Why |
|---|---|
| Jun 2026 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Aug 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 17 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Dec 2024 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | 13 of 31 days measured; a month needs 22. The others: 18 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 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | 2 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | 1 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | 2 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 10 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 10 of 31 days measured; a month needs 22. The others: 11 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.
Nice's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2026 | 6315.3 µg/m³ | 503rdof 2,784 | – |
| February 2023 | 6114.2 µg/m³ | 398thof 1,129 | Europe, 6 to 25 February 2023 |
| August 2026 | 5913.5 µg/m³ | 457thof 2,896 | – |
| July 2023 | 5511.5 µg/m³ | 467thof 1,432 | – |
| February 2024 | 5511.4 µg/m³ | 523rdof 2,486 | – |
| February 2025 | 5511.1 µg/m³ | 1,086thof 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.
Nice's worst days
| Day | US AQI | Episode |
|---|---|---|
| 28 Aug 2026 | 11541.1 µg/m³ | – |
| 14 Jun 2025 | 8929.3 µg/m³ | Italy, France and 2 more countries, June 2025 |
| 11 Jun 2025 | 8326.5 µg/m³ | Europe, June 2025 |
| 2 Aug 2026 | 8225.9 µg/m³ | – |
| 13 Feb 2023 | 8225.8 µg/m³ | Europe, 6 to 25 February 2023 |
| 18 Feb 2025 | 7723.2 µg/m³ | – |
| 9 Mar 2026 | 7622.7 µg/m³ | – |
| 7 Mar 2026 | 7622.6 µg/m³ | – |
| 18 Jul 2026 | 7622.5 µg/m³ | – |
| 28 Jul 2026 | 7522.2 µg/m³ | – |
Daily means, the highest since 11 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, Nice, France, 11 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/fr/nice/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.
Nice now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 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).