SmogRank / Czechia / Moravian-Silesian Region / Havířov

Havířov, month by month

Havířov has a measured daily mean on 693 days since 1 January 2023. Its worst month was December 2024, at 89 US AQI (29.7 µg/m³), 96th of 2,616 cities on that month's world ranking. Its cleanest was May 2024, at 54 US AQI (10.7 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)36 days measured
Jan9 daysFeb3 daysMar1 dayApr3 daysMay9 daysJun4 daysJulnoneAugnoneSep1 dayOct6 days
2025too few days for a mean (a year needs 256)109 days measured
Jan12 daysFeb14 daysMar10 daysApr12 daysMay9 daysJunnoneJul5 daysAug13 daysSep14 daysOct8 daysNov8 daysDec4 days
2024too few days for a mean (a year needs 257)212 days measured
Jan85#133Feb62#354Mar14 daysApr58#589May54#642JunnoneJul58#348Aug1 daySepnoneOct7 daysNov71#217Dec89#96
202365 for the year336 days measured100th of 1,355 in the world
Jan68#173Feb76#79Mar69#32Apr71#115May63#136Jun59#452Jul55#479Aug57#311Sep59#245Oct55#241Nov57#270Dec87#72
Each square is a month's mean PM2.5 in US AQI from Havířov'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 Havířov marked; each year, the year's.
Good0–50
Moderate51–100
Unhealthy for 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

27 months
MonthWhy
Oct 20266 of 12 days measured; a month needs 9. The others: 6 with readings for part of the day (a day needs 18 hours).
Sep 20261 of 30 days measured; a month needs 21. The others: 29 with readings for part of the day (a day needs 18 hours).
Aug 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 20264 of 30 days measured; a month needs 21. The others: 26 with under 18 hours of readings or readings that failed our checks.
May 20269 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Apr 20263 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Mar 20261 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Feb 20263 of 28 days measured; a month needs 20. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jan 20269 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Dec 20254 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Nov 20258 of 30 days measured; a month needs 21. The others: 22 with under 18 hours of readings or readings that failed our checks.
Oct 20258 of 31 days measured; a month needs 22. The others: 23 with under 18 hours of readings or readings that failed our checks.
Sep 202514 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Aug 202513 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks.
Jul 20255 of 31 days measured; a month needs 22. The others: 26 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 20259 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Apr 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Mar 202510 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Feb 202514 of 28 days measured; a month needs 20. The others: 14 with under 18 hours of readings or readings that failed our checks.
Jan 202512 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Oct 20247 of 31 days measured; a month needs 22. The others: 24 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 20241 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jun 2024No day measured. The others: 30 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.

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

Havířov's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2024 8929.7 µg/m³24 of 3196thof 2,616Europe, 24 December 2024 to 3 January 2025
Poland and Czechia, December 2024
December 2023 8728.3 µg/m³27 of 3172ndof 2,247Czechia, Slovakia and 2 more countries, December 2023
Europe, December 2023and 1 more
January 2024 8527.6 µg/m³25 of 31133rdof 2,385Europe, 8 to 27 January 2024
Eastern Europe, January 2024
February 2023 7622.5 µg/m³28 of 2879thof 1,129Europe, 28 February to 4 March 2023
Europe, 6 to 25 February 2023
November 2024 7120.0 µg/m³27 of 30217thof 2,624Europe, November 2024
Eastern Europe, October and November 2024
April 2023 7119.7 µg/m³29 of 30115thof 1,622Eastern Europe, April 2023
Europe, April 2023

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.

Havířov's worst days

DayUS AQIEpisode
23 Jan 2026 207132.0 µg/m³Europe, January and February 2026
28 Dec 2024 205130.0 µg/m³Europe, 24 December 2024 to 3 January 2025
27 Dec 2024 185104.0 µg/m³Europe, 24 December 2024 to 3 January 2025
7 Dec 2023 18096.5 µg/m³Europe, December 2023
24 Jan 2026 17792.8 µg/m³Europe, January and February 2026
10 Jan 2024 17691.6 µg/m³Europe, 8 to 27 January 2024
22 Jan 2026 17690.6 µg/m³Europe, January and February 2026
8 Dec 2023 17589.6 µg/m³Europe, December 2023
1 Dec 2023 16473.5 µg/m³Eastern Europe, November and December 2023
25 Jan 2026 16270.5 µg/m³Europe, January and February 2026

Daily means, the highest since 1 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, Havířov, Czechia, 1 Jan 2023 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/cz/havirov/history (accessed 13 Oct 2026).

Download chart (PNG)

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.

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

Updated 2026-10-13 03:07 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).