SmogRank / Romania / Maramureş / Sighetu Marmaţiei

Sighetu Marmaţiei, month by month

Sighetu Marmaţiei has a measured daily mean on 263 days since 19 December 2025. Its worst month was January 2026, at 171 US AQI (84.1 µg/m³), 17th of 2,617 cities on that month's world ranking. Its cleanest was July 2026, at 46 US AQI (8.2 µg/m³).

Every month since 2025

202675 so far250 days measured317th of 2,798 in the world
Jan171#17Feb82#349Mar79#462Apr62#584May52#860Jun51#790Jul46#1,821Aug52#938Sep52#714Oct8 days
2025too few days for a mean (a year needs 256)13 days measured
JanFebMarAprMayJunJulAugSepOctNovDec13 days
Each square is a month's mean PM2.5 in US AQI from Sighetu Marmaţiei's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Sighetu Marmaţiei marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

2 months
MonthWhy
Oct 20268 of 12 days measured; a month needs 9. The others: 1 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours).
Dec 202513 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.

Sighetu Marmaţiei's worst months

MonthUS AQIDays measuredWorld rankEpisode
January 2026 17184.1 µg/m³29 of 3117thof 2,617Europe, January and February 2026
February 2026 8225.8 µg/m³27 of 28349thof 2,866Europe, January and February 2026
March 2026 7924.0 µg/m³28 of 31462ndof 2,971–
April 2026 6214.8 µg/m³28 of 30584thof 2,941–
August 2026 529.8 µg/m³25 of 31938thof 2,896–
May 2026 529.6 µg/m³29 of 31860thof 2,874–

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.

Sighetu Marmaţiei's worst days

DayUS AQIEpisode
22 Jan 2026 264189.0 µg/m³Europe, January and February 2026
23 Jan 2026 245170.0 µg/m³Europe, January and February 2026
15 Jan 2026 229154.0 µg/m³Europe, January and February 2026
19 Jan 2026 226151.0 µg/m³Europe, January and February 2026
20 Jan 2026 221146.0 µg/m³Europe, January and February 2026
6 Jan 2026 205130.0 µg/m³–
18 Jan 2026 198123.0 µg/m³Europe, January and February 2026
21 Jan 2026 196120.0 µg/m³Europe, January and February 2026
19 Dec 2025 184102.0 µg/m³–
14 Jan 2026 184102.0 µg/m³Europe, January and February 2026

Daily means, the highest since 19 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, Sighetu Marmaţiei, Romania, 19 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/sighetu-marmatiei/history (accessed 13 Oct 2026).

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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.

Sighetu Marmaţiei now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-13 02:07 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).