SmogRank / Romania / Călărași County / Modelu

Modelu, month by month

Modelu has a measured daily mean on 141 days since 22 November 2025. Its worst month was January 2026, at 109 US AQI (38.6 µg/m³), 96th of 2,617 cities on that month's world ranking. Its cleanest was April 2026, at 82 US AQI (25.7 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 199)107 days measured
Jan109#96Feb99#199Mar16 daysApr82#290May9 daysJun5 daysJul1 dayAug2 daysSepnoneOctnone
2025too few days for a mean (a year needs 256)34 days measured
JanFebMarAprMayJunJulAugSepOctNov5 daysDec82#355
Each square is a month's mean PM2.5 in US AQI from Modelu'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 Modelu 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

8 months
MonthWhy
Oct 2026No day measured. The others: 7 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours), 1 with under 18 hours of readings or readings that failed our checks.
Sep 2026No day measured. The others: 30 with no readings from the monitor.
Aug 20262 of 31 days measured; a month needs 22. The others: 15 with no readings from the monitor, 14 with readings for part of the day (a day needs 18 hours).
Jul 20261 of 31 days measured; a month needs 22. The others: 6 with no readings from the monitor, 24 with readings for part of the day (a day needs 18 hours).
Jun 20265 of 30 days measured; a month needs 21. The others: 13 with no readings from the monitor, 12 with readings for part of the day (a day needs 18 hours).
May 20269 of 31 days measured; a month needs 22. The others: 14 with no readings from the monitor, 8 with readings for part of the day (a day needs 18 hours).
Mar 202616 of 31 days measured; a month needs 22. The others: 6 with no readings from the monitor, 9 with readings for part of the day (a day needs 18 hours).
Nov 20255 of 30 days measured; a month needs 21. The others: 4 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.

Modelu's worst months

MonthUS AQIDays measuredWorld rankEpisode
January 2026 10938.6 µg/m³27 of 3196thof 2,617Europe, January and February 2026
February 2026 9934.7 µg/m³23 of 28199thof 2,866Europe, January and February 2026
December 2025 8225.9 µg/m³29 of 31355thof 3,006–
April 2026 8225.7 µg/m³24 of 30290thof 2,941–

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.

Modelu's worst days

DayUS AQIEpisode
23 Jan 2026 16474.6 µg/m³Europe, January and February 2026
13 Feb 2026 15662.9 µg/m³–
21 Jan 2026 15358.5 µg/m³Europe, January and February 2026
20 Jan 2026 15155.9 µg/m³Europe, January and February 2026
16 Jan 2026 14653.9 µg/m³Europe, January and February 2026
15 Jan 2026 14453.0 µg/m³Europe, January and February 2026
22 Jan 2026 14151.8 µg/m³Europe, January and February 2026
12 Feb 2026 13449.1 µg/m³Europe, January and February 2026
14 Feb 2026 13247.9 µg/m³–
10 Dec 2025 12745.9 µg/m³–

Daily means, the highest since 22 Nov 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, Modelu, Romania, 22 Nov 2025 – 7 Aug 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ro/modelu/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.

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

Updated 2026-10-12 17:07 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).