SmogRank / Graz / Sankt Valentin

Graz vs Sankt Valentin: PM2.5 compared

Over the last year, Graz's air was 35% more polluted than Sankt Valentin's: PM2.5 averaged 14.2 µg/m³ against 10.5, on the 329 days both cities were measured. Graz had the dirtier air on 262 of those days, Sankt Valentin on 64. Graz was over the WHO's daily guideline of 15 µg/m³ on 120 of them, Sankt Valentin on 77.

Right now

Graz#121on the 24-hour board of 1,616, at 70 US AQI (19.5 µg/m³)
Sankt Valentin#265on the 24-hour board of 1,616, at 61 US AQI (14.4 µg/m³)

The last year, day by day

Graz
Sankt Valentin
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/m³Sankt Valentin, Nov 2025: 13.8 µg/m³Nov 2025Graz, Dec: 19.5 µg/m³Sankt Valentin, Dec: 12.7 µg/m³DecGraz, Jan 2026: 32.6 µg/m³Sankt Valentin, Jan 2026: 18.9 µg/m³Jan 2026Graz, Feb: 19.4 µg/m³Sankt Valentin, Feb: 14.2 µg/m³FebGraz, Mar: 17.2 µg/m³Sankt Valentin, Mar: 14.2 µg/m³MarGraz, Apr: 11.0 µg/m³Sankt Valentin, Apr: 9.3 µg/m³AprGraz, May: 8.1 µg/m³Sankt Valentin, May: 6.1 µg/m³MayGraz, Jun: 8.0 µg/m³Sankt Valentin, Jun: 6.1 µg/m³JunGraz, Jul: 8.2 µg/m³Sankt Valentin, Jul: 6.3 µg/m³JulGraz, Aug: 9.6 µg/m³Sankt Valentin, Aug: 7.1 µg/m³AugGraz, Sep: 8.4 µg/m³Sankt Valentin, Sep: 6.5 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Graz. Faded: Sankt Valentin. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearGrazSankt ValentinDays both measuredDays Graz was worse
2026 so far6053264213
20256054311242
20246755149110
20236151272232

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

Sankt Valentin

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.

Sankt Valentin

Side by side with Enns, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Graz and Sankt Valentin, 22 Oct 2025 – 5 Oct 2026, smogrank.com/compare/at-graz/at-sankt-valentin (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.