SmogRank / Italy / Campania / Santa Maria A Vico

Santa Maria A Vico, month by month

Santa Maria A Vico has a measured daily mean on 156 days since 21 October 2025. Its worst month was August 2026, at 63 US AQI (15.7 µg/m³), 361st of 2,896 cities on that month's world ranking. Its cleanest was May 2026, at 48 US AQI (8.7 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)152 days measured
Jan3 daysFebnoneMar2 daysApr57#702May48#1,081Jun20 daysJul58#739Aug63#361Sep19 daysOct54#489
2025too few days for a mean (a year needs 256)4 days measured
JanFebMarAprMayJunJulAugSepOct4 daysNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Santa Maria A Vico'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 Santa Maria A Vico 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

8 months
MonthWhy
Sep 202619 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jun 202620 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Mar 20262 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Feb 2026No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 20263 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Dec 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 20254 of 31 days measured; a month needs 22. The others: 7 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.

Santa Maria A Vico's worst months

MonthUS AQIDays measuredWorld rank
August 2026 6315.7 µg/m³28 of 31361stof 2,896
July 2026 5812.9 µg/m³26 of 31739thof 2,784
April 2026 5712.4 µg/m³21 of 30702ndof 2,941
May 2026 488.7 µg/m³24 of 311,081stof 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.

Santa Maria A Vico's worst days

DayUS AQI
23 Jan 2026 9331.9 µg/m³
28 Aug 2026 9331.4 µg/m³
30 Aug 2026 8225.7 µg/m³
21 Jul 2026 7823.8 µg/m³
12 Apr 2026 7421.2 µg/m³
17 Apr 2026 7321.1 µg/m³
1 Jul 2026 7220.3 µg/m³
25 Jan 2026 7220.2 µg/m³
30 Jul 2026 7220.2 µg/m³
20 Jul 2026 7119.8 µg/m³

Daily means, the highest since 21 Oct 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, Santa Maria A Vico, Italy, 21 Oct 2025 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/it/santa-maria-a-vico/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.

Santa Maria A Vico now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 22:07 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).