What is the air quality trend in La Cité-Limoilou?

Over the past 21 days, La Cité-Limoilou had an average AQI of 14 based on station measurements. The worst day was 2026-05-31 with AQI 27.

How is La Cité-Limoilou air quality measured?

Air quality in La Cité-Limoilou 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 La Cité-Limoilou, Canada

Name: La Cité-Limoilou Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near La Cité-Limoilou, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

476h

PM2.5 Station

476h · 46 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	21	17–27	5.1 µg/m³	12h	44
2026-06-08	15	7–24	3.6 µg/m³	24h	44
2026-06-07	10	1–61	2.6 µg/m³	24h	42
2026-06-06	13	6–25	3.2 µg/m³	24h	42
2026-06-05	17	4–48	4.0 µg/m³	24h	39
2026-06-04	27	19–34	6.3 µg/m³	24h	41
2026-06-03	17	10–40	4.1 µg/m³	24h	40
2026-06-02	12	5–22	2.9 µg/m³	24h	40
2026-06-01	13	8–21	3.2 µg/m³	21h	40
2026-05-31	27	4–79	7.3 µg/m³	24h	42
2026-05-30	15	3–64	3.7 µg/m³	24h	41
2026-05-29	14	4–25	3.4 µg/m³	24h	42
2026-05-28	9	4–20	2.2 µg/m³	24h	40
2026-05-27	13	2–29	3.2 µg/m³	24h	41
2026-05-26	26	8–53	6.2 µg/m³	24h	42
2026-05-25	9	2–30	2.1 µg/m³	24h	41
2026-05-24	8	4–37	2.0 µg/m³	24h	41
2026-05-23	9	3–19	2.0 µg/m³	24h	41
2026-05-22	8	2–27	2.0 µg/m³	23h	38
2026-05-21	4	1–20	0.9 µg/m³	24h	36
2026-05-20	12	2–35	2.8 µg/m³	12h	37

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