SmogRank / Japan / Shizuoka / Fujinomiya
Fujinomiya, month by month
Fujinomiya has a measured daily mean on 978 days since 28 July 2023. Its worst month was August 2025, at 58 US AQI (12.8 µg/m³), 606th of 2,901 cities on that month's world ranking. Its cleanest was September 2026, at 19 US AQI (3.5 µg/m³). 2025 averaged 48 US AQI (8.7 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
7 months
| Month | Why |
|---|---|
| Feb 2026 | 12 of 28 days measured; a month needs 20. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 16 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 14 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. |
| Jul 2023 | 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.
Fujinomiya's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| August 2025 | 5812.8 µg/m³ | 606thof 2,901 | Japan, 4 to 5 August 2025 |
| July 2026 | 5812.6 µg/m³ | 791stof 2,784 | Japan and South Korea, July 2026 Japan, July 2026 |
| August 2023 | 5611.8 µg/m³ | 367thof 1,980 | – |
| July 2024 | 5611.8 µg/m³ | 442ndof 2,566 | – |
| July 2025 | 5511.2 µg/m³ | 1,016thof 2,889 | Japan and South Korea, June and July 2025 |
| September 2023 | 5511.1 µg/m³ | 414thof 2,176 | – |
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.
Fujinomiya's worst days
| Day | US AQI | Episode |
|---|---|---|
| 8 Jul 2025 | 11340.3 µg/m³ | Japan and South Korea, June and July 2025 |
| 27 Mar 2025 | 9834.5 µg/m³ | Japan, March 2025 |
| 7 Jul 2025 | 9834.4 µg/m³ | Japan and South Korea, June and July 2025 |
| 6 Jul 2025 | 9733.6 µg/m³ | Japan and South Korea, June and July 2025 |
| 9 Jul 2025 | 9532.5 µg/m³ | Japan and South Korea, June and July 2025 |
| 4 Aug 2025 | 8929.5 µg/m³ | Japan, 4 to 5 August 2025 |
| 23 Jul 2026 | 8728.2 µg/m³ | Japan and South Korea, July 2026 |
| 25 Jul 2026 | 8527.3 µg/m³ | Japan and South Korea, July 2026 |
| 19 Apr 2025 | 8225.6 µg/m³ | Japan, 19 to 20 April 2025 |
| 15 Aug 2023 | 8125.3 µg/m³ | – |
Daily means, the highest since 28 Jul 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, Fujinomiya, Japan, 28 Jul 2023 – 12 Oct 2026. Monitor data from Ministry of the Environment Air Pollutant Wide Area Monitoring System via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/jp/fujinomiya/history (accessed 13 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.
Fujinomiya now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 04:07 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).