SmogRank / Graz / Hainburg an der Donau

Graz vs Hainburg an der Donau: PM2.5 compared

Over the last year, Graz's air was 37% more polluted than Hainburg an der Donau's: PM2.5 averaged 14.2 µg/m³ against 10.4, on the 332 days both cities were measured. Graz had the dirtier air on 281 of those days, Hainburg an der Donau on 49. Graz was over the WHO's daily guideline of 15 µg/m³ on 120 of them, Hainburg an der Donau on 70.

Right now

Graz#121on the 24-hour board of 1,616, at 70 US AQI (19.5 µg/m³)
Hainburg an der Donau#223on the 24-hour board of 1,616, at 63 US AQI (15.4 µg/m³)

The last year, day by day

Graz
Hainburg an der Donau
Each city's daily mean from 6 Oct 2025 to 5 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

15Graz, Nov 2025: 14.9 µg/m³Hainburg an der Donau, Nov 2025: 12.2 µg/m³Nov 2025Graz, Dec: 19.5 µg/m³Hainburg an der Donau, Dec: 13.8 µg/m³DecGraz, Jan 2026: 32.6 µg/m³Hainburg an der Donau, Jan 2026: 21.7 µg/m³Jan 2026Graz, Feb: 19.4 µg/m³Hainburg an der Donau, Feb: 15.4 µg/m³FebGraz, Mar: 17.2 µg/m³Hainburg an der Donau, Mar: 15.2 µg/m³MarGraz, Apr: 11.0 µg/m³Hainburg an der Donau, Apr: 9.0 µg/m³AprGraz, May: 8.1 µg/m³Hainburg an der Donau, May: 5.9 µg/m³MayGraz, Jun: 8.4 µg/m³Hainburg an der Donau, Jun: 5.3 µg/m³JunGraz, Jul: 8.4 µg/m³Hainburg an der Donau, Jul: 5.6 µg/m³JulGraz, Aug: 9.6 µg/m³Hainburg an der Donau, Aug: 6.1 µg/m³AugGraz, Sep: 8.4 µg/m³Hainburg an der Donau, Sep: 5.4 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Graz. Faded: Hainburg an der Donau. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearGrazHainburg an der DonauDays both measuredDays Graz was worse
2026 so far6053267228
20256053311250
20246755149122
20236148230213

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Graz

Hainburg an der Donau

Daily means in US AQI, over the days both cities were measured in the last year. Each date opens that day's world board.

Compare either city with another

Graz

Side by side with Gratkorn, Wolfsberg, Gujranwala.

Hainburg an der Donau

Side by side with Bratislava, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Graz and Hainburg an der Donau, 22 Oct 2025 – 5 Oct 2026, smogrank.com/compare/at-graz/at-hainburg-an-der-donau (accessed 6 Oct 2026).

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.

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-06 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.