What is the air quality trend in Istanbul?

Over the past 15 days, Istanbul had an average AQI of 59 based on station measurements. The worst day was 2026-07-10 with AQI 81.

How is Istanbul air quality measured?

Air quality in Istanbul 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 Istanbul, Turkey

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

Historical PM2.5 and AQI trend from monitoring stations near Istanbul, Turkey.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 16 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	54	54–54	13.5 µg/m³	11.1	1h	16
2026-07-21	45	24–81	11.4 µg/m³	14.2	24h	20
2026-07-20	47	27–153	12.6 µg/m³	14.6	24h	17
2026-07-19	43	26–60	10.8 µg/m³	14.5	24h	17
2026-07-18	53	31–131	14.4 µg/m³	17.2	24h	16
2026-07-17	54	33–76	14.2 µg/m³	14.9	24h	15
2026-07-16	57	37–153	15.9 µg/m³	14.1	24h	15
2026-07-15	57	35–109	15.5 µg/m³	13.7	24h	13
2026-07-14	56	36–84	14.9 µg/m³	12.6	24h	14
2026-07-13	51	30–98	13.4 µg/m³	11.9	24h	14
2026-07-12	67	25–108	20.2 µg/m³	44.9	24h	18
2026-07-11	79	51–151	25.3 µg/m³	68.4	24h	21
2026-07-10	81	62–157	26.6 µg/m³	62.9	24h	22
2026-07-09	70	53–83	21.1 µg/m³	56.1	24h	21
2026-07-08	76	58–154	23.8 µg/m³	68.0	23h	22

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