SmogRank / Romania / Maramureş / Baia Mare
Baia Mare, month by month
Baia Mare has a measured daily mean on 220 days since 23 December 2025. Its worst month was January 2026, at 145 US AQI (53.5 µg/m³), 33rd of 2,617 cities on that month's world ranking. Its cleanest was September 2026, at 43 US AQI (7.7 µg/m³).
Every month since 2025
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
5 months
| Month | Why |
|---|---|
| Oct 2026 | 7 of 12 days measured; a month needs 9. The others: 5 with readings for part of the day (a day needs 18 hours). |
| Aug 2026 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 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 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. |
| Dec 2025 | 7 of 31 days measured; a month needs 22. The others: 2 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.
Baia Mare's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 14553.5 µg/m³ | 33rdof 2,617 | Europe, January and February 2026 |
| February 2026 | 8527.2 µg/m³ | 307thof 2,866 | Europe, January and February 2026 |
| March 2026 | 7019.4 µg/m³ | 626thof 2,971 | – |
| April 2026 | 6114.2 µg/m³ | 612thof 2,941 | Eastern Europe, 15 to 17 April 2026 |
| May 2026 | 468.2 µg/m³ | 1,247thof 2,874 | – |
| September 2026 | 437.7 µg/m³ | 1,079thof 2,981 | – |
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.
Baia Mare's worst days
| Day | US AQI | Episode |
|---|---|---|
| 6 Jan 2026 | 17487.8 µg/m³ | – |
| 23 Jan 2026 | 17386.2 µg/m³ | Europe, January and February 2026 |
| 2 Jan 2026 | 17285.4 µg/m³ | – |
| 13 Jan 2026 | 16879.6 µg/m³ | Europe, January and February 2026 |
| 20 Jan 2026 | 16270.6 µg/m³ | Europe, January and February 2026 |
| 1 Jan 2026 | 16170.2 µg/m³ | – |
| 10 Jan 2026 | 16169.4 µg/m³ | – |
| 27 Dec 2025 | 15966.6 µg/m³ | – |
| 21 Jan 2026 | 15865.2 µg/m³ | Europe, January and February 2026 |
| 18 Jan 2026 | 15460.0 µg/m³ | Europe, January and February 2026 |
Daily means, the highest since 23 Dec 2025; 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, Baia Mare, Romania, 23 Dec 2025 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ro/baia-mare/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.
Baia Mare now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 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).