SmogRank / Austria / Styria

Air quality in Knittelfeld

No new readings from Knittelfeld's monitors since 24 Sept. Some networks publish days late. The figures below are from before then; they update when the data returns.

Styria, Austria.

Mean for 24 Sept57US AQI
Moderate

PM2.5 12.1 µg/m³, 0.8× the WHO 24-hour guideline. The most recent day with readings.

About its typical day over the past year (11.3 µg/m³).

Where Knittelfeld ranks

24 hours–not enough data
7 days–not enough data
30 days–not enough data
This year#684of 2,735, at 58 US AQI (12.7 µg/m³), to 24 Sept

Why it ranks here

Seasonal. Over the past year its worst months were January, averaging up to 22.8 µg/m³ against 7.8 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

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

Bad-air episodes that reached Knittelfeld

Times when Knittelfeld and many cities around it had PM2.5 at twice their usual or more on the same days. All episodes.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: no monitor reporting here yet2025-11-02: no monitor reporting here yet2025-11-03: no monitor reporting here yet2025-11-04: no monitor reporting here yet2025-11-05: no monitor reporting here yet2025-11-06: no monitor reporting here yet2025-11-07: no monitor reporting here yet2025-11-08: no monitor reporting here yet2025-11-09: no monitor reporting here yet2025-11-10: no monitor reporting here yet2025-11-11: no monitor reporting here yet2025-11-12: no monitor reporting here yet2025-11-13: no monitor reporting here yet2025-11-14: no monitor reporting here yet2025-11-15: no monitor reporting here yet2025-11-16: no monitor reporting here yet2025-11-17: no monitor reporting here yet2025-11-18: no monitor reporting here yet2025-11-19: no monitor reporting here yet2025-11-20: no monitor reporting here yet2025-11-21: no monitor reporting here yet2025-11-22: no monitor reporting here yet2025-11-23: no monitor reporting here yet2025-11-24: no monitor reporting here yet2025-11-25: no monitor reporting here yet2025-11-26: no monitor reporting here yet2025-11-27: no monitor reporting here yet2025-11-28: no monitor reporting here yet2025-11-29: no monitor reporting here yet2025-11-30: no monitor reporting here yet2025-12-01: no monitor reporting here yet2025-12-02: no monitor reporting here yet2025-12-03: no monitor reporting here yet2025-12-04: no monitor reporting here yet2025-12-05: no monitor reporting here yet2025-12-06: no monitor reporting here yet2025-12-07: no monitor reporting here yet2025-12-08: no monitor reporting here yet2025-12-09: no monitor reporting here yet2025-12-10: no monitor reporting here yet2025-12-11: no monitor reporting here yet2025-12-12: no monitor reporting here yet2025-12-13: no monitor reporting here yet2025-12-14: no monitor reporting here yet2025-12-15: no monitor reporting here yet2025-12-16: no monitor reporting here yet2025-12-17: no monitor reporting here yet2025-12-18: no monitor reporting here yet2025-12-19: no monitor reporting here yet2025-12-20: no monitor reporting here yet2025-12-21: no monitor reporting here yet2025-12-22: no monitor reporting here yet2025-12-23: no monitor reporting here yet2025-12-24: no monitor reporting here yet2025-12-25: no monitor reporting here yet2025-12-26: no monitor reporting here yet2025-12-27: no monitor reporting here yet2025-12-28: no monitor reporting here yet2025-12-29: no monitor reporting here yet2025-12-30: no monitor reporting here yet2025-12-31: no monitor reporting here yet2026-01-01: no monitor reporting here yet2026-01-02: 17.3 µg/m³2026-01-03: 18.4 µg/m³2026-01-04: 14.3 µg/m³2026-01-05: 18.4 µg/m³2026-01-06: 23.0 µg/m³2026-01-07: no daily value, only 14 of the 18 hours a day needs2026-01-08: no daily value, only 12 of the 18 hours a day needs2026-01-09: 26.0 µg/m³2026-01-10: 22.6 µg/m³2026-01-11: 10.2 µg/m³2026-01-12: 16.6 µg/m³2026-01-13: 33.0 µg/m³2026-01-14: 25.0 µg/m³2026-01-15: 25.8 µg/m³2026-01-16: 31.5 µg/m³2026-01-17: 31.8 µg/m³2026-01-18: 17.4 µg/m³2026-01-19: 22.4 µg/m³2026-01-20: 26.2 µg/m³2026-01-21: 31.1 µg/m³2026-01-22: 32.6 µg/m³2026-01-23: 39.0 µg/m³2026-01-24: 34.9 µg/m³2026-01-25: 37.8 µg/m³2026-01-26: 17.3 µg/m³2026-01-27: 9.8 µg/m³2026-01-28: 13.6 µg/m³2026-01-29: 20.3 µg/m³2026-01-30: 11.4 µg/m³2026-01-31: 9.6 µg/m³2026-02-01: 11.5 µg/m³2026-02-02: 12.9 µg/m³2026-02-03: 15.0 µg/m³2026-02-04: 23.9 µg/m³2026-02-05: 23.7 µg/m³2026-02-06: 16.0 µg/m³2026-02-07: 14.6 µg/m³2026-02-08: 14.2 µg/m³2026-02-09: 16.0 µg/m³2026-02-10: 10.8 µg/m³2026-02-11: 11.3 µg/m³2026-02-12: 11.0 µg/m³2026-02-13: 12.4 µg/m³2026-02-14: 20.5 µg/m³2026-02-15: 11.0 µg/m³2026-02-16: 11.0 µg/m³2026-02-17: 14.8 µg/m³2026-02-18: 10.5 µg/m³2026-02-19: 19.0 µg/m³2026-02-20: 17.3 µg/m³2026-02-21: 27.5 µg/m³2026-02-22: 23.9 µg/m³2026-02-23: 16.3 µg/m³2026-02-24: 11.5 µg/m³2026-02-25: 12.5 µg/m³2026-02-26: 16.0 µg/m³2026-02-27: 13.3 µg/m³2026-02-28: 14.0 µg/m³2026-03-01: 17.6 µg/m³2026-03-02: 23.7 µg/m³2026-03-03: 19.5 µg/m³2026-03-04: 12.7 µg/m³2026-03-05: 14.0 µg/m³2026-03-06: 15.3 µg/m³2026-03-07: 19.1 µg/m³2026-03-08: 20.9 µg/m³2026-03-09: 24.1 µg/m³2026-03-10: 23.9 µg/m³2026-03-11: 18.9 µg/m³2026-03-12: 12.0 µg/m³2026-03-13: 14.2 µg/m³2026-03-14: 12.5 µg/m³2026-03-15: 11.4 µg/m³2026-03-16: 14.8 µg/m³2026-03-17: 9.1 µg/m³2026-03-18: 16.9 µg/m³2026-03-19: 21.8 µg/m³2026-03-20: 20.6 µg/m³2026-03-21: 24.2 µg/m³2026-03-22: 23.1 µg/m³2026-03-23: 15.4 µg/m³2026-03-24: 17.1 µg/m³2026-03-25: 15.3 µg/m³2026-03-26: 7.5 µg/m³2026-03-27: 10.7 µg/m³2026-03-28: 12.1 µg/m³2026-03-29: 10.3 µg/m³2026-03-30: 14.5 µg/m³2026-03-31: 8.7 µg/m³2026-04-01: 9.8 µg/m³2026-04-02: 14.4 µg/m³2026-04-03: 12.8 µg/m³2026-04-04: 13.6 µg/m³2026-04-05: 28.1 µg/m³2026-04-06: 10.5 µg/m³2026-04-07: 10.2 µg/m³2026-04-08: 9.0 µg/m³2026-04-09: 10.1 µg/m³2026-04-10: 14.8 µg/m³2026-04-11: 15.7 µg/m³2026-04-12: 17.0 µg/m³2026-04-13: 17.1 µg/m³2026-04-14: 16.8 µg/m³2026-04-15: 14.1 µg/m³2026-04-16: 12.3 µg/m³2026-04-17: 10.7 µg/m³2026-04-18: 11.4 µg/m³2026-04-19: 10.2 µg/m³2026-04-20: 8.8 µg/m³2026-04-21: 9.9 µg/m³2026-04-22: 10.6 µg/m³2026-04-23: 11.6 µg/m³2026-04-24: 6.8 µg/m³2026-04-25: 10.5 µg/m³2026-04-26: 9.3 µg/m³2026-04-27: 10.2 µg/m³2026-04-28: 13.3 µg/m³2026-04-29: 9.8 µg/m³2026-04-30: 5.0 µg/m³2026-05-01: 10.9 µg/m³2026-05-02: 8.3 µg/m³2026-05-03: no daily value, only 15 of the 18 hours a day needs2026-05-04: 10.8 µg/m³2026-05-05: 10.1 µg/m³2026-05-06: 6.7 µg/m³2026-05-07: 8.2 µg/m³2026-05-08: 8.8 µg/m³2026-05-09: 9.2 µg/m³2026-05-10: 10.1 µg/m³2026-05-11: 8.5 µg/m³2026-05-12: 2.4 µg/m³2026-05-13: 8.3 µg/m³2026-05-14: 10.2 µg/m³2026-05-15: 7.7 µg/m³2026-05-16: 6.6 µg/m³2026-05-17: 7.2 µg/m³2026-05-18: 8.3 µg/m³2026-05-19: 9.4 µg/m³2026-05-20: 9.0 µg/m³2026-05-21: 7.3 µg/m³2026-05-22: 9.3 µg/m³2026-05-23: 8.8 µg/m³2026-05-24: 10.1 µg/m³2026-05-25: no daily value, only 17 of the 18 hours a day needs2026-05-26: 16.8 µg/m³2026-05-27: 15.9 µg/m³2026-05-28: 13.9 µg/m³2026-05-29: 11.3 µg/m³2026-05-30: 10.4 µg/m³2026-05-31: 10.2 µg/m³2026-06-01: 7.0 µg/m³2026-06-02: 9.2 µg/m³2026-06-03: 6.5 µg/m³2026-06-04: 6.8 µg/m³2026-06-05: 7.9 µg/m³2026-06-06: 7.6 µg/m³2026-06-07: 7.6 µg/m³2026-06-08: no daily value, only 17 of the 18 hours a day needs2026-06-09: no daily value, only 16 of the 18 hours a day needs2026-06-10: no daily value, only 13 of the 18 hours a day needs2026-06-11: 1.3 µg/m³2026-06-12: 4.0 µg/m³2026-06-13: no daily value, only 13 of the 18 hours a day needs2026-06-14: 5.4 µg/m³2026-06-15: 5.1 µg/m³2026-06-16: 9.4 µg/m³2026-06-17: 12.0 µg/m³2026-06-18: 13.3 µg/m³2026-06-19: 14.9 µg/m³2026-06-20: 13.2 µg/m³2026-06-21: 11.3 µg/m³2026-06-22: 9.1 µg/m³2026-06-23: 6.8 µg/m³2026-06-24: 13.8 µg/m³2026-06-25: 14.6 µg/m³2026-06-26: 13.8 µg/m³2026-06-27: 16.1 µg/m³2026-06-28: 18.1 µg/m³2026-06-29: 13.7 µg/m³2026-06-30: 17.3 µg/m³2026-07-01: 12.4 µg/m³2026-07-02: 6.5 µg/m³2026-07-03: 7.9 µg/m³2026-07-04: 7.3 µg/m³2026-07-05: 10.0 µg/m³2026-07-06: no daily value, readings left out by our checks (a stuck monitor, error codes, or a reading its neighbours contradict)2026-07-07: 3.6 µg/m³2026-07-08: 4.2 µg/m³2026-07-09: 4.8 µg/m³2026-07-10: 6.6 µg/m³2026-07-11: 9.2 µg/m³2026-07-12: 8.7 µg/m³2026-07-13: 5.8 µg/m³2026-07-14: 3.8 µg/m³2026-07-15: 3.7 µg/m³2026-07-16: 4.2 µg/m³2026-07-17: 3.8 µg/m³2026-07-18: 4.8 µg/m³2026-07-19: 4.9 µg/m³2026-07-20: 8.0 µg/m³2026-07-21: 12.1 µg/m³2026-07-22: 8.6 µg/m³2026-07-23: 9.5 µg/m³2026-07-24: 8.4 µg/m³2026-07-25: 9.7 µg/m³2026-07-26: 12.3 µg/m³2026-07-27: 11.3 µg/m³2026-07-28: 8.1 µg/m³2026-07-29: 15.1 µg/m³2026-07-30: 14.9 µg/m³2026-07-31: 17.1 µg/m³2026-08-01: 13.5 µg/m³2026-08-02: 11.6 µg/m³2026-08-03: 12.3 µg/m³2026-08-04: 14.9 µg/m³2026-08-05: 16.8 µg/m³2026-08-06: 15.5 µg/m³2026-08-07: 10.8 µg/m³2026-08-08: 7.3 µg/m³2026-08-09: no daily value, only 14 of the 18 hours a day needs2026-08-10: 11.8 µg/m³2026-08-11: 12.6 µg/m³2026-08-12: 11.2 µg/m³2026-08-13: 11.1 µg/m³2026-08-14: 13.8 µg/m³2026-08-15: 11.7 µg/m³2026-08-16: 14.1 µg/m³2026-08-17: 9.0 µg/m³2026-08-18: 11.4 µg/m³2026-08-19: 7.3 µg/m³2026-08-20: 12.4 µg/m³2026-08-21: 6.7 µg/m³2026-08-22: 4.5 µg/m³2026-08-23: 6.7 µg/m³2026-08-24: 8.2 µg/m³2026-08-25: 9.4 µg/m³2026-08-26: 8.1 µg/m³2026-08-27: 9.2 µg/m³2026-08-28: 18.0 µg/m³2026-08-29: 8.5 µg/m³2026-08-30: 7.9 µg/m³2026-08-31: 10.0 µg/m³2026-09-01: 7.1 µg/m³2026-09-02: 8.2 µg/m³2026-09-03: 8.3 µg/m³2026-09-04: 7.2 µg/m³2026-09-05: 9.7 µg/m³2026-09-06: no daily value, only 7 of the 18 hours a day needs2026-09-07: 8.5 µg/m³2026-09-08: 7.1 µg/m³2026-09-09: 10.7 µg/m³2026-09-10: 5.5 µg/m³2026-09-11: 7.0 µg/m³2026-09-12: 6.7 µg/m³2026-09-13: 8.4 µg/m³2026-09-14: 6.9 µg/m³2026-09-15: 6.9 µg/m³2026-09-16: 7.9 µg/m³2026-09-17: 7.4 µg/m³2026-09-18: 6.6 µg/m³2026-09-19: 6.4 µg/m³2026-09-20: 8.2 µg/m³2026-09-21: 5.6 µg/m³2026-09-22: 6.9 µg/m³2026-09-23: 9.5 µg/m³2026-09-24: 12.1 µg/m³2026-09-25: no daily value, only 12 of the 18 hours a day needs2026-09-26: no daily value, no readings from the monitors2026-09-27: no daily value, no readings from the monitors2026-09-28: no daily value, no readings from the monitors2026-09-29: no daily value, no readings from the monitors2026-09-30: no daily value, no readings from the monitors2026-10-01: no daily value, under 18 hours of readings, or readings that failed our checks2026-10-02: no daily value, no readings from the monitors2026-10-03: no daily value, no readings from the monitors2026-10-04: no daily value, no readings from the monitors
65 of 255 measured days were over the WHO 24-hour guideline (15 µg/m³). 21 days without a value since 2 Jan 2026: 8 with no readings from the monitors, 11 with readings for part of the day (a day needs 18 hours), 1 with readings left out by our checks, 1 with under 18 hours of readings or readings that failed our checks; point at a grey square for its reason (why days go blank). One row per month, one square per local day.
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

Hour by hour

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

Where it stood each day

Top 10Top 100#1#10#100#1,000#3,193FebMarAprMayJunJulAugSep#733
Its rank on each day's world board, #1 being the most polluted city that day. Higher is worse. Each gridline down is ten times the rank above it (#1, #10, #100, #1,000), so the top places get the most room. See it among every city.

2026 against 2025, month by month

15Jan 2026: 22.8 µg/m³JanFeb 2026: 15.4 µg/m³FebMar 2026: 16.2 µg/m³MarApr 2026: 12.1 µg/m³AprMay 2026: 9.5 µg/m³MayJun 2026: 10.2 µg/m³JunJul 2026: 8.2 µg/m³JulAug 2026: 10.9 µg/m³AugSep 2026: 7.8 µg/m³SepOctNovDec
Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

PM2.5 from 2 reference monitors. None of them reported in the last 24 hours.

StationOperatorType
Zeltweg HauptschuleODC-BYEEAReference
Knittelfeld FreiheitsalleeODC-BYEEAReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); 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.

Use this page

SmogRank, PM2.5 daily means, Knittelfeld, Austria, 2 Jan 2026 – 24 Sep 2026, smogrank.com/at/knittelfeld (accessed 5 Oct 2026).

Download chart (PNG)Embed a live widget

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.

Other cities in Austria

30-day averages, US AQI. All of Austria.

Updated 2026-10-05 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.