Urban traffic station · Prague, Czech Republic
Prague-Legerova
Urban traffic station with a modelled PM2.5 annual mean of 14 µg/m³ - 2.8× the WHO 2021 guideline. Operated by CHMI; EEA code CZ0ALEG.
Data updated 2026-09-01
- 14
- PM2.5 µg/m³ (modelled)
- 23.6
- NO2 µg/m³ (modelled)
- 97.6%
- data capture
- 1997
- active since
Modelled exposure readout
Prague-Legerova's modelled PM2.5 is 2.8× the WHO 2021 guideline and NO2 2.4×, derived from Czech Republic's AEI adjusted for this TRAFFIC classification.
- 14 µg/m³ PM2.5 modelled
- 2.8× vs WHO PM2.5
- 23.6 µg/m³ NO2 modelled
- 97.6% data capture
Traffic stations read higher near the kerb than city-wide background averages.
Stations with similar EEA profiles
Two cross-country peer sets for Prague-Legerova. Same-country Read-with links stay above; these neighborhoods are nearest other-country stations by modelled PM2.5 and by EEA data-capture rate.
Similar modelled PM2.5
Nearest other-country stations by modelled PM2.5 (14 µg/m³ here), outside Czech Republic.
Similar data capture
Nearest other-country stations by EEA data-capture rate (97.6% here), excluding the PM2.5 peer set.
Modelled annual means for Prague-Legerova
Modelled annual mean concentration by pollutant (µg/m³), derived from the national mean rather than this station's own series
- O3
O3: 56.6 µg/m³ modelled annual mean
56.6 µg/m³
- PM10
PM10: 27.1 µg/m³ modelled annual mean
27.1 µg/m³
- NO2
NO2: 23.6 µg/m³ modelled annual mean
23.6 µg/m³
- PM25 14
PM25: 14 µg/m³ modelled annual mean
14 µg/m³
- SO2 4.8
SO2: 4.8 µg/m³ modelled annual mean
4.8 µg/m³
What this shows For reference, the WHO 2021 annual guidelines are PM2.5 = 5, PM10 = 15, and NO2 = 10 µg/m³. This station's PM2.5 sits at 2.8× the PM2.5 guideline.
How Prague's PM2.5 compares
This station's annual mean vs the national average and the WHO 2021 guideline
- This station
Prague-Legerova: 14 µg/m³
14 µg/m³ PM2.5
- Czech Republic avg
Czech Republic national average: 12.2 µg/m³
12.2 µg/m³ PM2.5
- WHO 2021 5
WHO 2021 health guideline: 5 µg/m³
5 µg/m³ PM2.5
What this shows Prague-Legerova reads above Czech Republic's national PM2.5 average - expected for a kerbside traffic station. Both sit above the WHO health guideline of 5 µg/m³.
About this station
The Prague-Legerova traffic monitoring station in Prague is operated by CHMI. The station code is an EEA identifier; concentrations on this page are modeled from Czech Republic's PM2.5 Average Exposure Indicator, not this station's own Dataflow E1a hourly series. Because this is a traffic station (sited within about 10 metres of a road kerb), readings here typically run 20-40% higher than at co-located urban background stations for NO2 and PM2.5. Ozone is generally lower than at background sites because NOx emissions titrate ozone away.
Modelled annual means
These are modelled estimates, not this station's own reported readings. Each value is Czech Republic's national population-weighted annual mean, adjusted for this station's classification (traffic). Two stations of the same classification in the same country therefore show the same value. For this station's actual reported series, use the EEA datahub link below. Full rule: methodology §5b.
All concentrations in µg/m³ are modeled from the country PM2.5 Average Exposure Indicator, adjusted for this station's classification (code CZ0ALEG) - not an independent per-station E1a reading. See our methodology for the exact derivation.
Source: European Environment Agency, Average Exposure Indicator (AEI) 2021-2023; station CZ0ALEG (modeled).
Source: World Health Organization, Global Air Quality Guidelines, 2021 update.
Figures on PlainAirQuality are rendered from this site's database rather than typed into the page. Country values restate the EEA's published series and are held in our dataset pending an automated re-import; station-level values are modelled from those national means, not measured at the station. Every figure here is a MODELLED estimate, not this station's own reported reading: the national population-weighted annual mean adjusted for the station's classification (methodology §5b). Peak and exceedance-day figures are deliberately absent, because we do not publish a number we cannot source to the station itself. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.