SmogRank / Slovakia / Žilina Region

Air quality in Čadca

Žilina Region, Slovakia. PM2.5 from 1 reference monitor, updated hourly.

8.7µg/m³
Good

Mean for 30 Sept, the most recent day with readings, 0.6× the WHO 24-hour guideline. No hourly readings have reached us since; some networks publish days late.

Rank, worst first

24 hours–not enough data
7 days#684of 2,315, at 8.9 µg/m³
30 days#992of 2,323, at 6.6 µg/m³
This year–not enough data

Why it ranks here

Seasonal. Over the past year its worst months were March, November, averaging up to 18.3 µg/m³ against 6.6 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Čadca's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: 14.6 µg/m³2025-11-02: 17.5 µg/m³2025-11-03: 7.3 µg/m³2025-11-04: 12.2 µg/m³2025-11-05: 15.6 µg/m³2025-11-06: no data2025-11-07: no data2025-11-08: 27.7 µg/m³2025-11-09: 18.8 µg/m³2025-11-10: 12.6 µg/m³2025-11-11: 13.1 µg/m³2025-11-12: 20.8 µg/m³2025-11-13: 14.3 µg/m³2025-11-14: 15.6 µg/m³2025-11-15: 40.3 µg/m³2025-11-16: 24.2 µg/m³2025-11-17: 10.1 µg/m³2025-11-18: 15.0 µg/m³2025-11-19: 26.8 µg/m³2025-11-20: 14.1 µg/m³2025-11-21: 16.2 µg/m³2025-11-22: 14.6 µg/m³2025-11-23: 20.4 µg/m³2025-11-24: 11.4 µg/m³2025-11-25: no data2025-11-26: no data2025-11-27: no data2025-11-28: no data2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: no data2025-12-03: 37.6 µg/m³2025-12-04: no data2025-12-05: no data2025-12-06: no data2025-12-07: no data2025-12-08: 10.7 µg/m³2025-12-09: 8.8 µg/m³2025-12-10: 14.5 µg/m³2025-12-11: 17.0 µg/m³2025-12-12: no data2025-12-13: no data2025-12-14: no data2025-12-15: no data2025-12-16: no data2025-12-17: no data2025-12-18: no data2025-12-19: no data2025-12-20: no data2025-12-21: no data2025-12-22: 11.7 µg/m³2025-12-23: 16.8 µg/m³2025-12-24: no data2025-12-25: 22.1 µg/m³2025-12-26: no data2025-12-27: no data2025-12-28: no data2025-12-29: no data2025-12-30: no data2025-12-31: no data2026-01-01: no data2026-01-02: no data2026-01-03: no data2026-01-04: no data2026-01-05: no data2026-01-06: no data2026-01-07: no data2026-01-08: no data2026-01-09: no data2026-01-10: no data2026-01-11: no data2026-01-12: no data2026-01-13: no data2026-01-14: no data2026-01-15: no data2026-01-16: no data2026-01-17: no data2026-01-18: no data2026-01-19: no data2026-01-20: no data2026-01-21: no data2026-01-22: no data2026-01-23: no data2026-01-24: no data2026-01-25: no data2026-01-26: no data2026-01-27: no data2026-01-28: no data2026-01-29: no data2026-01-30: no data2026-01-31: no data2026-02-01: no data2026-02-02: no data2026-02-03: no data2026-02-04: no data2026-02-05: no data2026-02-06: no data2026-02-07: no data2026-02-08: no data2026-02-09: no data2026-02-10: no data2026-02-11: no data2026-02-12: no data2026-02-13: no data2026-02-14: no data2026-02-15: no data2026-02-16: no data2026-02-17: no data2026-02-18: no data2026-02-19: no data2026-02-20: no data2026-02-21: no data2026-02-22: no data2026-02-23: no data2026-02-24: no data2026-02-25: no data2026-02-26: no data2026-02-27: no data2026-02-28: no data2026-03-01: no data2026-03-02: no data2026-03-03: no data2026-03-04: no data2026-03-05: no data2026-03-06: no data2026-03-07: no data2026-03-08: no data2026-03-09: no data2026-03-10: no data2026-03-11: no data2026-03-12: no data2026-03-13: 12.1 µg/m³2026-03-14: 10.8 µg/m³2026-03-15: 16.8 µg/m³2026-03-16: 28.3 µg/m³2026-03-17: 20.4 µg/m³2026-03-18: 24.7 µg/m³2026-03-19: 12.4 µg/m³2026-03-20: 30.6 µg/m³2026-03-21: 20.4 µg/m³2026-03-22: 15.7 µg/m³2026-03-23: 16.0 µg/m³2026-03-24: 22.0 µg/m³2026-03-25: 19.3 µg/m³2026-03-26: 10.5 µg/m³2026-03-27: 17.0 µg/m³2026-03-28: 23.8 µg/m³2026-03-29: 21.7 µg/m³2026-03-30: 14.9 µg/m³2026-03-31: 11.1 µg/m³2026-04-01: 14.0 µg/m³2026-04-02: 18.5 µg/m³2026-04-03: 18.6 µg/m³2026-04-04: 15.4 µg/m³2026-04-05: 10.5 µg/m³2026-04-06: no data2026-04-07: no data2026-04-08: 9.6 µg/m³2026-04-09: no data2026-04-10: 17.8 µg/m³2026-04-11: 25.2 µg/m³2026-04-12: 19.2 µg/m³2026-04-13: 10.4 µg/m³2026-04-14: 13.0 µg/m³2026-04-15: no data2026-04-16: no data2026-04-17: 12.8 µg/m³2026-04-18: 11.2 µg/m³2026-04-19: 11.5 µg/m³2026-04-20: 6.2 µg/m³2026-04-21: 10.2 µg/m³2026-04-22: 11.4 µg/m³2026-04-23: 7.3 µg/m³2026-04-24: 9.2 µg/m³2026-04-25: 12.8 µg/m³2026-04-26: 7.2 µg/m³2026-04-27: 5.4 µg/m³2026-04-28: 9.4 µg/m³2026-04-29: 7.7 µg/m³2026-04-30: 7.6 µg/m³2026-05-01: 10.6 µg/m³2026-05-02: 8.9 µg/m³2026-05-03: 7.7 µg/m³2026-05-04: 5.9 µg/m³2026-05-05: 6.3 µg/m³2026-05-06: 6.4 µg/m³2026-05-07: 4.9 µg/m³2026-05-08: 9.5 µg/m³2026-05-09: 12.4 µg/m³2026-05-10: 10.2 µg/m³2026-05-11: 7.3 µg/m³2026-05-12: 5.0 µg/m³2026-05-13: 5.1 µg/m³2026-05-14: 6.1 µg/m³2026-05-15: 4.6 µg/m³2026-05-16: 5.8 µg/m³2026-05-17: 6.3 µg/m³2026-05-18: 8.7 µg/m³2026-05-19: 8.3 µg/m³2026-05-20: 7.6 µg/m³2026-05-21: 7.6 µg/m³2026-05-22: 8.3 µg/m³2026-05-23: 10.6 µg/m³2026-05-24: no data2026-05-25: no data2026-05-26: no data2026-05-27: 9.3 µg/m³2026-05-28: 6.3 µg/m³2026-05-29: 6.3 µg/m³2026-05-30: 8.0 µg/m³2026-05-31: 9.0 µg/m³2026-06-01: 7.7 µg/m³2026-06-02: 8.5 µg/m³2026-06-03: 7.6 µg/m³2026-06-04: 5.3 µg/m³2026-06-05: 4.2 µg/m³2026-06-06: 6.0 µg/m³2026-06-07: 6.1 µg/m³2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: 3.1 µg/m³2026-06-12: no data2026-06-13: no data2026-06-14: 3.6 µg/m³2026-06-15: 3.8 µg/m³2026-06-16: 4.6 µg/m³2026-06-17: 7.5 µg/m³2026-06-18: 9.3 µg/m³2026-06-19: 10.8 µg/m³2026-06-20: 11.7 µg/m³2026-06-21: 11.6 µg/m³2026-06-22: 11.5 µg/m³2026-06-23: 8.7 µg/m³2026-06-24: 11.0 µg/m³2026-06-25: 9.7 µg/m³2026-06-26: 14.0 µg/m³2026-06-27: 17.3 µg/m³2026-06-28: 17.1 µg/m³2026-06-29: no data2026-06-30: 19.1 µg/m³2026-07-01: 15.1 µg/m³2026-07-02: 6.4 µg/m³2026-07-03: 6.1 µg/m³2026-07-04: 4.6 µg/m³2026-07-05: 4.8 µg/m³2026-07-06: 4.5 µg/m³2026-07-07: 6.3 µg/m³2026-07-08: 5.0 µg/m³2026-07-09: 5.0 µg/m³2026-07-10: 4.8 µg/m³2026-07-11: 6.3 µg/m³2026-07-12: 6.3 µg/m³2026-07-13: 7.7 µg/m³2026-07-14: 9.7 µg/m³2026-07-15: 7.1 µg/m³2026-07-16: 10.2 µg/m³2026-07-17: 10.8 µg/m³2026-07-18: 12.2 µg/m³2026-07-19: 9.5 µg/m³2026-07-20: 7.6 µg/m³2026-07-21: 4.7 µg/m³2026-07-22: 6.7 µg/m³2026-07-23: 5.4 µg/m³2026-07-24: 4.6 µg/m³2026-07-25: 5.9 µg/m³2026-07-26: 8.4 µg/m³2026-07-27: 6.8 µg/m³2026-07-28: 5.5 µg/m³2026-07-29: 8.4 µg/m³2026-07-30: 11.0 µg/m³2026-07-31: 11.7 µg/m³2026-08-01: 13.6 µg/m³2026-08-02: 8.4 µg/m³2026-08-03: 12.4 µg/m³2026-08-04: 12.3 µg/m³2026-08-05: 14.1 µg/m³2026-08-06: 15.3 µg/m³2026-08-07: 10.2 µg/m³2026-08-08: 10.5 µg/m³2026-08-09: 7.9 µg/m³2026-08-10: 8.4 µg/m³2026-08-11: 9.9 µg/m³2026-08-12: 4.7 µg/m³2026-08-13: 6.0 µg/m³2026-08-14: 6.8 µg/m³2026-08-15: 8.4 µg/m³2026-08-16: 11.2 µg/m³2026-08-17: 10.1 µg/m³2026-08-18: 4.2 µg/m³2026-08-19: 4.7 µg/m³2026-08-20: 6.1 µg/m³2026-08-21: 5.2 µg/m³2026-08-22: 4.6 µg/m³2026-08-23: 4.2 µg/m³2026-08-24: 5.0 µg/m³2026-08-25: no data2026-08-26: no data2026-08-27: 8.8 µg/m³2026-08-28: 9.4 µg/m³2026-08-29: 6.9 µg/m³2026-08-30: 5.1 µg/m³2026-08-31: 5.9 µg/m³2026-09-01: 5.4 µg/m³2026-09-02: 5.4 µg/m³2026-09-03: 4.9 µg/m³2026-09-04: 6.1 µg/m³2026-09-05: 5.2 µg/m³2026-09-06: 3.7 µg/m³2026-09-07: 6.3 µg/m³2026-09-08: 8.6 µg/m³2026-09-09: 9.1 µg/m³2026-09-10: 5.3 µg/m³2026-09-11: no data2026-09-12: 7.7 µg/m³2026-09-13: 6.8 µg/m³2026-09-14: 7.9 µg/m³2026-09-15: 6.5 µg/m³2026-09-16: 5.4 µg/m³2026-09-17: 6.4 µg/m³2026-09-18: 5.6 µg/m³2026-09-19: 6.2 µg/m³2026-09-20: 6.5 µg/m³2026-09-21: 4.2 µg/m³2026-09-22: 3.6 µg/m³2026-09-23: 5.2 µg/m³2026-09-24: 7.6 µg/m³2026-09-25: 8.4 µg/m³2026-09-26: 15.6 µg/m³2026-09-27: 5.9 µg/m³2026-09-28: no data2026-09-29: 7.1 µg/m³2026-09-30: 8.7 µg/m³2026-10-01: no data
44 of 232 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Its world rank, day by day

#1#1994NovDecJanFebMarAprMayJunJulAugSep
Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2025: 20.0 µg/m³JanFeb 2025: 31.6 µg/m³FebMar 2025: 18.9 µg/m³Mar 2026: 18.3 µg/m³MarApr 2025: 11.4 µg/m³Apr 2026: 12.1 µg/m³AprMay 2025: 9.1 µg/m³May 2026: 7.6 µg/m³MayJun 2025: 9.6 µg/m³Jun 2026: 9.2 µg/m³JunJul 2025: 8.4 µg/m³Jul 2026: 7.4 µg/m³JulAug 2025: 9.9 µg/m³Aug 2026: 8.3 µg/m³AugSep 2025: 8.0 µg/m³Sep 2026: 6.6 µg/m³SepOct 2025: 10.2 µg/m³OctNov 2025: 17.4 µg/m³NovDec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 9.1 µg/m³9.120252025: 10.2 µg/m³10.22024no data
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
"Oscadnica"ODC-BYEEAReference

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Slovakia

30-day averages, µg/m³. All of Slovakia.

Updated 2026-10-01 21:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.