What is the air quality trend in Vratsa?

Over the past 8 days, Vratsa had an average AQI of 32 based on station measurements. The worst day was 2026-05-22 with AQI 50.

How is Vratsa air quality measured?

Air quality in Vratsa 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 Vratsa, Bulgaria

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

Historical PM2.5 and AQI trend from monitoring stations near Vratsa, Bulgaria.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

155h

PM2.5 Station

155h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	36	8–305	18.9 µg/m³	25.9	18h	1
2026-05-28	25	8–55	6.1 µg/m³	8.4	23h	1
2026-05-27	18	8–38	4.5 µg/m³	6.5	22h	1
2026-05-26	29	17–55	7.0 µg/m³	9.6	22h	1
2026-05-25	34	12–190	12.0 µg/m³	16.5	22h	1
2026-05-24	26	12–55	6.4 µg/m³	8.9	21h	1
2026-05-23	45	12–156	14.0 µg/m³	19.3	24h	1
2026-05-22	50	29–80	14.3 µg/m³	19.7	3h	1

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