SmogRank / Romania / Maramureş

Air quality in Sighetu Marmaţiei

Maramureş, Romania. PM2.5 from 1 reference monitor, updated hourly.

11.0 µg/m³
Moderate

Latest hour (04:00 UTC), 0.7× the WHO 24-hour guideline.

Rank

24 h
–
not enough data
7 days
#314
of 2,330 · 13.0 µg/m³
30 days
#434
of 2,327 · 9.5 µg/m³
Year
#205
of 2,160 · 22.4 µg/m³

Why it ranks here

Likely fire smoke. On Sep 29, when Sighetu Marmaţiei averaged 16.5 µg/m³ (its typical day: 12.6), NASA satellites detected 69 fires within 300 km (1 within 100 km). Smoke from those fires is a likely contributor; we don't check which way the wind blew, and mapped smoke can be high above the ground.

Seasonal. Over the past year its worst months were January, averaging up to 84.1 µg/m³ against 8.2 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Sighetu Marmaţiei's own measurements, with fire detections from NASA FIRMS and smoke maps from NOAA HMS; causes are the usual kinds for a pattern like this, not a confirmed source.

Last 4 days, hour by hour

15302026-09-30 23:00 UTC: 15.9 µg/m³2026-10-01 00:00 UTC: 14.1 µg/m³2026-10-01 01:00 UTC: 12.9 µg/m³2026-10-01 02:00 UTC: 11.9 µg/m³2026-10-01 03:00 UTC: 11.1 µg/m³2026-10-01 04:00 UTC: 11.0 µg/m³Sep 28Sep 29Sep 30Oct 1

Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: no data2025-09-30: no data2025-10-01: no data2025-10-02: no data2025-10-03: no data2025-10-04: no data2025-10-05: no data2025-10-06: no data2025-10-07: no data2025-10-08: no data2025-10-09: no data2025-10-10: no data2025-10-11: no data2025-10-12: no data2025-10-13: no data2025-10-14: no data2025-10-15: no data2025-10-16: no data2025-10-17: no data2025-10-18: no data2025-10-19: no data2025-10-20: no data2025-10-21: no data2025-10-22: no data2025-10-23: no data2025-10-24: no data2025-10-25: no data2025-10-26: no data2025-10-27: no data2025-10-28: no data2025-10-29: no data2025-10-30: no data2025-10-31: no data2025-11-01: no data2025-11-02: no data2025-11-03: no data2025-11-04: no data2025-11-05: no data2025-11-06: no data2025-11-07: no data2025-11-08: no data2025-11-09: no data2025-11-10: no data2025-11-11: no data2025-11-12: no data2025-11-13: no data2025-11-14: no data2025-11-15: no data2025-11-16: no data2025-11-17: no data2025-11-18: no data2025-11-19: no data2025-11-20: no data2025-11-21: no data2025-11-22: no data2025-11-23: no data2025-11-24: no data2025-11-25: no data2025-11-26: no data2025-11-27: no data2025-11-28: no data2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: no data2025-12-03: no data2025-12-04: no data2025-12-05: no data2025-12-06: no data2025-12-07: no data2025-12-08: no data2025-12-09: no data2025-12-10: no data2025-12-11: no data2025-12-12: no data2025-12-13: no data2025-12-14: no data2025-12-15: no data2025-12-16: no data2025-12-17: no data2025-12-18: no data2025-12-19: 102.0 µg/m³2025-12-20: 67.5 µg/m³2025-12-21: 74.6 µg/m³2025-12-22: 69.1 µg/m³2025-12-23: 46.7 µg/m³2025-12-24: 18.9 µg/m³2025-12-25: 45.5 µg/m³2025-12-26: 74.7 µg/m³2025-12-27: 79.2 µg/m³2025-12-28: 11.1 µg/m³2025-12-29: 14.9 µg/m³2025-12-30: 19.6 µg/m³2025-12-31: 9.2 µg/m³2026-01-01: 43.4 µg/m³2026-01-02: 19.1 µg/m³2026-01-03: 33.4 µg/m³2026-01-04: 55.5 µg/m³2026-01-05: 60.9 µg/m³2026-01-06: 130.0 µg/m³2026-01-07: no data2026-01-08: no data2026-01-09: 46.2 µg/m³2026-01-10: 76.3 µg/m³2026-01-11: 52.1 µg/m³2026-01-12: 72.8 µg/m³2026-01-13: 73.8 µg/m³2026-01-14: 102.0 µg/m³2026-01-15: 154.0 µg/m³2026-01-16: 86.1 µg/m³2026-01-17: 84.1 µg/m³2026-01-18: 123.0 µg/m³2026-01-19: 151.0 µg/m³2026-01-20: 146.0 µg/m³2026-01-21: 120.0 µg/m³2026-01-22: 189.0 µg/m³2026-01-23: 170.0 µg/m³2026-01-24: 83.5 µg/m³2026-01-25: 61.1 µg/m³2026-01-26: 67.6 µg/m³2026-01-27: 100.0 µg/m³2026-01-28: 40.4 µg/m³2026-01-29: 41.7 µg/m³2026-01-30: 35.3 µg/m³2026-01-31: 20.7 µg/m³2026-02-01: 26.9 µg/m³2026-02-02: 31.2 µg/m³2026-02-03: 26.3 µg/m³2026-02-04: 33.9 µg/m³2026-02-05: 25.8 µg/m³2026-02-06: 36.8 µg/m³2026-02-07: 62.6 µg/m³2026-02-08: 25.1 µg/m³2026-02-09: 12.4 µg/m³2026-02-10: 20.7 µg/m³2026-02-11: 21.8 µg/m³2026-02-12: 16.7 µg/m³2026-02-13: 27.2 µg/m³2026-02-14: 43.1 µg/m³2026-02-15: 21.3 µg/m³2026-02-16: 18.6 µg/m³2026-02-17: 31.6 µg/m³2026-02-18: 16.3 µg/m³2026-02-19: 16.4 µg/m³2026-02-20: no data2026-02-21: 25.2 µg/m³2026-02-22: 24.1 µg/m³2026-02-23: 20.2 µg/m³2026-02-24: 17.9 µg/m³2026-02-25: 8.8 µg/m³2026-02-26: 24.3 µg/m³2026-02-27: 31.3 µg/m³2026-02-28: 29.0 µg/m³2026-03-01: 27.0 µg/m³2026-03-02: 34.4 µg/m³2026-03-03: 37.0 µg/m³2026-03-04: 33.3 µg/m³2026-03-05: 33.7 µg/m³2026-03-06: 28.9 µg/m³2026-03-07: 28.1 µg/m³2026-03-08: 22.2 µg/m³2026-03-09: 14.9 µg/m³2026-03-10: 19.7 µg/m³2026-03-11: 20.3 µg/m³2026-03-12: 25.1 µg/m³2026-03-13: no data2026-03-14: no data2026-03-15: no data2026-03-16: 24.5 µg/m³2026-03-17: 24.5 µg/m³2026-03-18: 23.0 µg/m³2026-03-19: 18.9 µg/m³2026-03-20: 24.7 µg/m³2026-03-21: 26.5 µg/m³2026-03-22: 19.9 µg/m³2026-03-23: 19.8 µg/m³2026-03-24: 24.7 µg/m³2026-03-25: 24.2 µg/m³2026-03-26: 26.6 µg/m³2026-03-27: 22.7 µg/m³2026-03-28: 20.2 µg/m³2026-03-29: 15.0 µg/m³2026-03-30: 19.8 µg/m³2026-03-31: 11.9 µg/m³2026-04-01: 11.9 µg/m³2026-04-02: 16.4 µg/m³2026-04-03: 23.5 µg/m³2026-04-04: 29.0 µg/m³2026-04-05: 15.3 µg/m³2026-04-06: 10.5 µg/m³2026-04-07: 6.3 µg/m³2026-04-08: 3.8 µg/m³2026-04-09: 8.5 µg/m³2026-04-10: 14.7 µg/m³2026-04-11: 20.5 µg/m³2026-04-12: 21.8 µg/m³2026-04-13: 13.4 µg/m³2026-04-14: 10.6 µg/m³2026-04-15: 14.4 µg/m³2026-04-16: 21.7 µg/m³2026-04-17: 18.2 µg/m³2026-04-18: 9.2 µg/m³2026-04-19: 11.5 µg/m³2026-04-20: 17.6 µg/m³2026-04-21: 9.7 µg/m³2026-04-22: 17.4 µg/m³2026-04-23: 18.4 µg/m³2026-04-24: no data2026-04-25: 18.5 µg/m³2026-04-26: no data2026-04-27: 11.8 µg/m³2026-04-28: 15.2 µg/m³2026-04-29: 17.5 µg/m³2026-04-30: 8.2 µg/m³2026-05-01: 14.2 µg/m³2026-05-02: 9.1 µg/m³2026-05-03: no data2026-05-04: 12.2 µg/m³2026-05-05: 12.7 µg/m³2026-05-06: 10.4 µg/m³2026-05-07: 12.5 µg/m³2026-05-08: 9.7 µg/m³2026-05-09: 10.0 µg/m³2026-05-10: 8.6 µg/m³2026-05-11: 10.2 µg/m³2026-05-12: 8.1 µg/m³2026-05-13: 6.5 µg/m³2026-05-14: 9.6 µg/m³2026-05-15: 9.9 µg/m³2026-05-16: 10.5 µg/m³2026-05-17: 9.1 µg/m³2026-05-18: 9.3 µg/m³2026-05-19: 9.3 µg/m³2026-05-20: 10.0 µg/m³2026-05-21: 13.0 µg/m³2026-05-22: 11.2 µg/m³2026-05-23: 8.6 µg/m³2026-05-24: 8.6 µg/m³2026-05-25: 9.2 µg/m³2026-05-26: no data2026-05-27: 9.6 µg/m³2026-05-28: 6.2 µg/m³2026-05-29: 5.2 µg/m³2026-05-30: 7.6 µg/m³2026-05-31: 6.7 µg/m³2026-06-01: 9.1 µg/m³2026-06-02: 6.4 µg/m³2026-06-03: 7.4 µg/m³2026-06-04: 9.4 µg/m³2026-06-05: 9.7 µg/m³2026-06-06: 9.6 µg/m³2026-06-07: 7.5 µg/m³2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: 8.8 µg/m³2026-06-12: 5.1 µg/m³2026-06-13: no data2026-06-14: 6.1 µg/m³2026-06-15: 4.6 µg/m³2026-06-16: 6.7 µg/m³2026-06-17: 8.2 µg/m³2026-06-18: 8.0 µg/m³2026-06-19: 10.1 µg/m³2026-06-20: 11.6 µg/m³2026-06-21: no data2026-06-22: no data2026-06-23: no data2026-06-24: 10.7 µg/m³2026-06-25: 10.1 µg/m³2026-06-26: 10.9 µg/m³2026-06-27: 12.2 µg/m³2026-06-28: no data2026-06-29: no data2026-06-30: 18.9 µg/m³2026-07-01: 14.2 µg/m³2026-07-02: 15.5 µg/m³2026-07-03: 8.2 µg/m³2026-07-04: 6.2 µg/m³2026-07-05: 6.7 µg/m³2026-07-06: 7.3 µg/m³2026-07-07: 8.7 µg/m³2026-07-08: 5.9 µg/m³2026-07-09: 7.2 µg/m³2026-07-10: 6.3 µg/m³2026-07-11: 6.7 µg/m³2026-07-12: 7.5 µg/m³2026-07-13: 6.8 µg/m³2026-07-14: 8.5 µg/m³2026-07-15: 9.8 µg/m³2026-07-16: 9.4 µg/m³2026-07-17: 12.4 µg/m³2026-07-18: 13.5 µg/m³2026-07-19: 13.9 µg/m³2026-07-20: 8.8 µg/m³2026-07-21: 6.6 µg/m³2026-07-22: 6.8 µg/m³2026-07-23: 6.6 µg/m³2026-07-24: 6.1 µg/m³2026-07-25: 5.0 µg/m³2026-07-26: 6.0 µg/m³2026-07-27: 7.0 µg/m³2026-07-28: 5.3 µg/m³2026-07-29: 6.4 µg/m³2026-07-30: 7.7 µg/m³2026-07-31: 8.7 µg/m³2026-08-01: 9.9 µg/m³2026-08-02: no data2026-08-03: 13.4 µg/m³2026-08-04: no data2026-08-05: 12.9 µg/m³2026-08-06: 14.9 µg/m³2026-08-07: 10.0 µg/m³2026-08-08: 8.7 µg/m³2026-08-09: no data2026-08-10: 8.5 µg/m³2026-08-11: 9.9 µg/m³2026-08-12: 11.0 µg/m³2026-08-13: 7.9 µg/m³2026-08-14: 6.3 µg/m³2026-08-15: 7.6 µg/m³2026-08-16: no data2026-08-17: 18.1 µg/m³2026-08-18: 13.6 µg/m³2026-08-19: 6.6 µg/m³2026-08-20: 7.8 µg/m³2026-08-21: 14.4 µg/m³2026-08-22: 12.2 µg/m³2026-08-23: no data2026-08-24: 4.6 µg/m³2026-08-25: 6.6 µg/m³2026-08-26: 9.5 µg/m³2026-08-27: 7.7 µg/m³2026-08-28: 7.1 µg/m³2026-08-29: 8.9 µg/m³2026-08-30: no data2026-08-31: 7.7 µg/m³2026-09-01: 8.7 µg/m³2026-09-02: 7.8 µg/m³2026-09-03: 6.8 µg/m³2026-09-04: 8.2 µg/m³2026-09-05: 8.2 µg/m³2026-09-06: no data2026-09-07: 4.9 µg/m³2026-09-08: no data2026-09-09: 7.6 µg/m³2026-09-10: 9.5 µg/m³2026-09-11: 10.1 µg/m³2026-09-12: 7.3 µg/m³2026-09-13: no data2026-09-14: 5.0 µg/m³2026-09-15: 7.6 µg/m³2026-09-16: 8.0 µg/m³2026-09-17: 9.5 µg/m³2026-09-18: 13.4 µg/m³2026-09-19: no data2026-09-20: no data2026-09-21: no data2026-09-22: 5.1 µg/m³2026-09-23: 9.1 µg/m³2026-09-24: 10.9 µg/m³2026-09-25: 13.4 µg/m³2026-09-26: 12.2 µg/m³2026-09-27: 12.1 µg/m³2026-09-28: 12.0 µg/m³2026-09-29: 16.5 µg/m³2026-09-30: 13.6 µg/m³
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

107 of 255 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#2060JanFebMarAprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2026: 84.1 µg/m³JanFeb 2026: 25.8 µg/m³FebMar 2026: 24.0 µg/m³MarApr 2026: 14.8 µg/m³AprMay 2026: 9.6 µg/m³MayJun 2026: 9.1 µg/m³JunJul 2026: 8.2 µg/m³JulAug 2026: 9.8 µg/m³AugSep 2026: 9.5 µg/m³SepOctNovDec 2025: 48.7 µg/m³Dec

Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
MM-6ODC-BYEEAReference

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Romania

Suceava 14.2Târgu Mureş 13.1Calafat 10.0Popeşti-Leordeni 9.4Craiova 9.4Iaşi 9.3Dej 9.3Târgu Jiu 9.1Buftea 8.5Voluntari 8.2Bucharest 7.9Braşov 7.9

30-day averages, µg/m³. All of Romania →

Updated 2026-10-01 06:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.