What is the air quality trend in Cluj-Napoca?

Over the past 7 days, Cluj-Napoca had an average AQI of 70 based on station measurements. The worst day was with AQI .

How is Cluj-Napoca air quality measured?

Air quality in Cluj-Napoca is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Cluj-Napoca, Romania

Name: Cluj-Napoca Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Cluj-Napoca, Romania.

105

Current AQI
Unhealthy for sensitive groups

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

107h · 3 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-11	98	91–105	34.1 µg/m³	48.0	2h	4
2026-04-10	78	53–105	24.8 µg/m³	43.2	24h	5
2026-04-09	78	36–94	25.1 µg/m³	56.4	17h	4
2026-04-08	56	29–77	15.5 µg/m³	31.3	9h	3
2026-04-07	51	22–84	14.0 µg/m³	26.8	24h	4
2026-04-06	54	26–74	14.5 µg/m³	31.6	18h	4
2026-04-04	81	54–154	26.5 µg/m³	45.9	13h	4

Back to Cluj-Napoca Air Quality