SmogRank / Graz / Zell am See

Graz vs Zell am See: PM2.5 compared

Over the last year, Graz's air was about 2.2× as polluted as Zell am See's: PM2.5 averaged 14.6 µg/m³ against 6.7, on the 315 days both cities were measured. Graz had the dirtier air on 309 of those days, Zell am See on 6. Graz was over the WHO's daily guideline of 15 µg/m³ on 120 of them, Zell am See on 7.

Right now

Graz#121on the 24-hour board of 1,616, at 70 US AQI (19.5 µg/m³)
Zell am See#1,032on the 24-hour board of 1,616, at 31 US AQI (5.6 µg/m³)

The last year, day by day

Graz
Zell am See
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/m³Zell am See, Nov 2025: 5.3 µg/m³Nov 2025Graz, Dec: 19.5 µg/m³Zell am See, Dec: 8.8 µg/m³DecGraz, Jan 2026: 32.6 µg/m³Zell am See, Jan 2026: 11.6 µg/m³Jan 2026Graz, Feb: 19.4 µg/m³Zell am See, Feb: 8.5 µg/m³FebGraz, Mar: 17.2 µg/m³Zell am See, Mar: 8.7 µg/m³MarGraz, Apr: 11.0 µg/m³Zell am See, Apr: 5.3 µg/m³AprGraz, May: 8.1 µg/m³Zell am See, May: 3.9 µg/m³MayJunGraz, Jul: 8.4 µg/m³Zell am See, Jul: 5.4 µg/m³JulGraz, Aug: 9.6 µg/m³Zell am See, Aug: 6.2 µg/m³AugGraz, Sep: 8.4 µg/m³Zell am See, Sep: 3.5 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Graz. Faded: Zell am See. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearGrazZell am SeeDays both measuredDays Graz was worse
2026 so far6137250247
20256034300291
202475478583
20236232219218

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

Zell am See

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.

Zell am See

Side by side with Hallein, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Graz and Zell am See, 22 Oct 2025 – 5 Oct 2026, smogrank.com/compare/at-graz/at-zell-am-see (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.