What is the air quality trend in Chirpan?

Over the past 14 days, Chirpan had an average AQI of 22 based on station measurements. The worst day was 2026-05-27 with AQI 31.

How is Chirpan air quality measured?

Air quality in Chirpan 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 Chirpan, Bulgaria

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

332h

PM2.5 Station

332h · 3 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	15	6–52	3.6 µg/m³	5.3	24h	2
2026-05-28	25	12–35	5.9 µg/m³	8.4	24h	2
2026-05-27	31	12–77	7.9 µg/m³	10.9	24h	2
2026-05-26	29	20–54	6.9 µg/m³	9.7	24h	2
2026-05-25	30	12–71	7.5 µg/m³	10.3	24h	3
2026-05-24	20	9–38	4.7 µg/m³	6.8	24h	2
2026-05-23	16	6–34	3.8 µg/m³	5.6	24h	2
2026-05-22	26	12–37	6.3 µg/m³	8.8	22h	2
2026-05-21	25	12–38	6.0 µg/m³	8.4	24h	3
2026-05-20	20	4–47	4.9 µg/m³	7.0	23h	2
2026-05-19	20	12–32	4.8 µg/m³	6.9	24h	2
2026-05-18	14	5–55	3.5 µg/m³	5.3	24h	3
2026-05-17	19	4–172	6.9 µg/m³	9.8	24h	3
2026-05-16	25	8–88	6.3 µg/m³	8.8	23h	3

Back to Chirpan Air Quality