SmogRank / North Macedonia / Strumica / Strumica

Strumica, month by month

Strumica has a measured daily mean on 545 days since 11 January 2023. Its worst month was December 2025, at 160 US AQI (67.7 µg/m³), 116th of 3,006 cities on that month's world ranking. Its cleanest was May 2026, at 46 US AQI (8.3 µg/m³).

Every month since 2023

202669 so far234 days measured402nd of 2,798 in the world
Jan156#30Feb88#275Mar69#637Apr59#651May46#1,217Jun19 daysJul51#1,542Aug57#531Sep52#714Oct55#453
2025too few days for a mean (a year needs 256)82 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSep12 daysOct78#238Nov19 daysDec160#116
2024too few days for a mean (a year needs 257)173 days measured
Jan3 daysFeb138#25Mar14 daysApr53#975May46#1,202Jun55#414Jul62#176Aug15 daysSepnoneOctnoneNovnoneDecnone
2023too few days for a mean (a year needs 256)56 days measured
Jan7 daysFeb151#2Mar20 daysApr3 daysMaynoneJunnoneJul1 dayAugnoneSepnoneOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Strumica'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 Strumica 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

29 months
MonthWhy
Jun 202619 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Nov 202519 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Sep 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Aug 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 202415 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Mar 202414 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jan 20243 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Dec 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 20231 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jun 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 20233 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Mar 202320 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jan 20237 of 31 days measured; a month needs 22. The others: 14 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.

Strumica's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2025 16067.7 µg/m³28 of 31116thof 3,006North Macedonia, Bulgaria and 2 more countries, December 2025
Eastern Europe, 16 to 21 December 2025
January 2026 15662.1 µg/m³25 of 3130thof 2,617Europe, January and February 2026
February 2023 15155.8 µg/m³25 of 282ndof 1,129Europe, 6 to 25 February 2023
February 2024 13850.7 µg/m³29 of 2925thof 2,486South-eastern Europe, February 2024
Europe, 27 January to 2 February 2024
February 2026 8828.8 µg/m³20 of 28275thof 2,866Europe, January and February 2026
October 2025 7823.4 µg/m³23 of 31238thof 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.

Strumica's worst days

DayUS AQIEpisode
3 Jan 2026 218142.5 µg/m³–
18 Dec 2025 203128.0 µg/m³Eastern Europe, 16 to 21 December 2025
16 Jan 2023 199123.9 µg/m³–
15 Jan 2023 198122.1 µg/m³–
19 Dec 2025 193116.0 µg/m³Eastern Europe, 16 to 21 December 2025
20 Dec 2025 193116.0 µg/m³Eastern Europe, 16 to 21 December 2025
10 Feb 2023 189110.4 µg/m³Europe, 6 to 25 February 2023
5 Feb 2024 189109.0 µg/m³South-eastern Europe, February 2024
16 Dec 2025 188108.5 µg/m³Eastern Europe, 16 to 21 December 2025
14 Jan 2026 188108.0 µg/m³Europe, January and February 2026

Daily means, the highest since 11 Jan 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, Strumica, North Macedonia, 11 Jan 2023 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/mk/strumica/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.

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

Updated 2026-10-13 00:07 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).