What is the air quality trend in Coimbatore?

Over the past 20 days, Coimbatore had an average AQI of 81 based on station measurements. The worst day was 2026-05-10 with AQI 131.

How is Coimbatore air quality measured?

Air quality in Coimbatore 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 Coimbatore, India

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

Historical PM2.5 and AQI trend from monitoring stations near Coimbatore, India.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

185h

PM2.5 Station

185h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	72	30–167	26.0 µg/m³	11h	1
2026-05-27	78	16–168	28.7 µg/m³	8h	1
2026-05-26	93	13–197	38.6 µg/m³	10h	1
2026-05-25	89	9–325	56.1 µg/m³	10h	1
2026-05-24	87	13–153	29.9 µg/m³	8h	1
2026-05-23	98	17–338	52.5 µg/m³	9h	1
2026-05-22	80	3–174	30.7 µg/m³	11h	1
2026-05-21	100	24–189	45.7 µg/m³	9h	1
2026-05-20	57	17–143	16.8 µg/m³	10h	1
2026-05-19	41	16–88	11.9 µg/m³	8h	1
2026-05-18	66	15–155	22.5 µg/m³	9h	1
2026-05-17	49	2–138	15.4 µg/m³	9h	1
2026-05-16	77	5–149	25.4 µg/m³	5h	1
2026-05-15	88	9–158	31.1 µg/m³	11h	1
2026-05-14	121	38–241	61.8 µg/m³	9h	1
2026-05-13	65	6–151	21.0 µg/m³	9h	1
2026-05-12	95	42–159	34.0 µg/m³	7h	1
2026-05-11	86	1–262	46.5 µg/m³	13h	1
2026-05-10	131	64–262	64.8 µg/m³	7h	1
2026-05-09	59	8–157	19.2 µg/m³	12h	1

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