SmogRank / Estonia / Ida-Virumaa / Narva

Narva, month by month

Narva has a measured daily mean on 689 days since 27 March 2024. Its worst month was January 2026, at 53 US AQI (10.1 µg/m³), 1,094th of 2,617 cities on that month's world ranking. Its cleanest was September 2026, at 16 US AQI (2.8 µg/m³).

Every month since 2024

202630 so far232 days measured2,589th of 2,791 in the world
Jan53#1,094Feb52#1,482Mar38#2,404Apr21#2,765May19#2,760Jun12 daysJul18#2,749Aug18#2,875Sep16#2,936Oct19#2,593
202524 for the year292 days measured2,613th of 2,681 in the world
Jan23#2,359Feb43#1,664Mar23#2,643Apr23#2,759May21 daysJun19 daysJul36#2,135Aug16#2,887Sep21#2,993Oct18 daysNov20#2,610Dec17#2,944
2024too few days for a mean (a year needs 257)165 days measured
JanFebMar5 daysApr23#2,211May26#2,321Jun7 daysJul21#2,473Aug12 daysSepnoneOct11 daysNov18 daysDec16#2,566
Each square is a month's mean PM2.5 in US AQI from Narva'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 Narva 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

10 months
MonthWhy
Jun 202612 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Oct 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jun 202519 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
May 202521 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Nov 202418 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
Oct 202411 of 31 days measured; a month needs 22. The others: 20 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 202412 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Jun 20247 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
Mar 20245 of 31 days measured; a month needs 22.

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

Narva's worst months

MonthUS AQIDays measuredWorld rank
January 2026 5310.1 µg/m³27 of 311,094thof 2,617
February 2026 529.7 µg/m³27 of 281,482ndof 2,866
February 2025 437.7 µg/m³22 of 281,664thof 2,633
March 2026 386.8 µg/m³31 of 312,404thof 2,971
July 2025 366.5 µg/m³29 of 312,135thof 2,889
May 2024 264.7 µg/m³29 of 312,321stof 2,684

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.

Narva's worst days

DayUS AQI
19 Feb 2026 10135.7 µg/m³
30 Jan 2026 9331.5 µg/m³
25 Feb 2026 8024.7 µg/m³
12 Mar 2026 7019.3 µg/m³
6 Feb 2026 6918.9 µg/m³
10 Feb 2025 6918.8 µg/m³
24 Feb 2025 6717.7 µg/m³
21 Jan 2026 6617.1 µg/m³
9 Dec 2024 6516.7 µg/m³
20 Jan 2026 6416.3 µg/m³

Daily means, the highest since 27 Mar 2024; 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, Narva, Estonia, 27 Mar 2024 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ee/narva/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.

Narva 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).