What is the air quality trend in Centretown?

Over the past 15 days, Centretown had an average AQI of 48 based on station measurements. The worst day was 2026-05-20 with AQI 79.

How is Centretown air quality measured?

Air quality in Centretown 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 Centretown, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Centretown, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

337h

PM2.5 Station

337h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	55	15–170	19.6 µg/m³	1.1	11h	4
2026-05-29	43	12–90	11.3 µg/m³	3.0	24h	5
2026-05-28	64	12–248	26.3 µg/m³	1.7	24h	5
2026-05-27	38	4–185	12.8 µg/m³	3.2	24h	4
2026-05-26	36	12–99	9.3 µg/m³	5.1	24h	5
2026-05-25	64	7–208	26.0 µg/m³	2.4	24h	4
2026-05-24	53	11–130	15.0 µg/m³	2.7	24h	6
2026-05-23	50	9–130	15.1 µg/m³	2.6	24h	5
2026-05-22	54	10–200	20.2 µg/m³	1.2	24h	4
2026-05-21	58	17–123	17.1 µg/m³	3.9	24h	4
2026-05-20	79	19–404	38.5 µg/m³	7.7	24h	5
2026-05-19	38	17–84	10.1 µg/m³	9.2	24h	4
2026-05-18	28	4–64	6.9 µg/m³	4.1	24h	4
2026-05-17	38	5–106	9.9 µg/m³	7.2	24h	3
2026-05-16	27	10–74	6.9 µg/m³	2.8	14h	6

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