SmogRank / North Macedonia / Mavrovo and Rostuša / Rostusa

Rostusa, month by month

Rostusa has a measured daily mean on 336 days since 19 September 2025. Its worst month was August 2026, at 63 US AQI (15.8 µg/m³), 359th of 2,896 cities on that month's world ranking. Its cleanest was November 2025, at 19 US AQI (3.4 µg/m³).

Every month since 2025

202644 so far245 days measured1,826th of 2,793 in the world
Jan23#2,482Feb19#2,783Mar53#1,620Apr37#2,009May32#2,028Jun19 daysJul21 daysAug63#359Sep54#567Oct34#1,599
2025too few days for a mean (a year needs 256)91 days measured
JanFebMarAprMayJunJulAugSep9 daysOct26#2,219Nov19#2,630Dec26#2,777
Each square is a month's mean PM2.5 in US AQI from Rostusa'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 Rostusa marked; each year, the year's. A dashed square is the running month, so far.
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

3 months
MonthWhy
Jul 202621 of 31 days measured; a month needs 22. The others: 9 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
Jun 202619 of 30 days measured; a month needs 21. The others: 11 with readings for part of the day (a day needs 18 hours).
Sep 20259 of 30 days measured; a month needs 21. The others: 2 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Rostusa's worst months

MonthUS AQIDays measuredWorld rankEpisode
August 2026 6315.8 µg/m³25 of 31359thof 2,896–
September 2026 5410.9 µg/m³27 of 30567thof 2,981Montenegro, North Macedonia and 2 more countries, September 2026
March 2026 5310.2 µg/m³31 of 311,620thof 2,971–
April 2026 376.6 µg/m³29 of 302,009thof 2,941–
May 2026 325.8 µg/m³30 of 312,028thof 2,874–
October 2025 264.6 µg/m³27 of 312,219thof 2,614–

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.

Rostusa's worst days

DayUS AQIEpisode
29 Aug 2026 11641.5 µg/m³–
28 Aug 2026 10235.9 µg/m³–
9 Sept 2026 8326.5 µg/m³Montenegro, North Macedonia and 2 more countries, September 2026
10 Sept 2026 8225.5 µg/m³Montenegro, North Macedonia and 2 more countries, September 2026
17 Aug 2026 8125.3 µg/m³–
31 Aug 2026 7823.4 µg/m³–
1 Sept 2026 7722.8 µg/m³–
11 Sept 2026 6918.6 µg/m³–
17 Mar 2026 6818.2 µg/m³–
20 Aug 2026 6818.1 µg/m³–

Daily means, the highest since 19 Sept 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, Rostusa, North Macedonia, 19 Sep 2025 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/mk/rostusa/history (accessed 12 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.

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

Updated 2026-10-12 23:07 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).