What is the air quality trend in Bologna?

Over the past 8 days, Bologna had an average AQI of 45 based on station measurements. The worst day was 2026-05-23 with AQI 57.

How is Bologna air quality measured?

Air quality in Bologna 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 Bologna, Italy

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

Historical PM2.5 and AQI trend from monitoring stations near Bologna, Italy.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	47	31–58	11.6 µg/m³	19.0	21h	11
2026-05-27	50	31–154	13.3 µg/m³	15.6	24h	13
2026-05-26	49	21–114	13.0 µg/m³	12.0	24h	13
2026-05-25	41	19–71	10.3 µg/m³	9.1	24h	14
2026-05-24	45	20–158	12.3 µg/m³	6.6	24h	13
2026-05-23	57	26–178	20.5 µg/m³	4.8	24h	14
2026-05-22	37	17–151	9.8 µg/m³	5.2	24h	14
2026-05-21	34	28–44	8.2 µg/m³	7.9	3h	21

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