What is the air quality trend in Charlesbourg?

Over the past 21 days, Charlesbourg had an average AQI of 18 based on station measurements. The worst day was 2026-05-26 with AQI 31.

How is Charlesbourg air quality measured?

Air quality in Charlesbourg 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 Charlesbourg, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

475h

PM2.5 Station

475h · 47 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	15–37	5.0 µg/m³	8h	44
2026-06-08	20	7–46	4.9 µg/m³	24h	44
2026-06-07	16	4–43	3.7 µg/m³	24h	43
2026-06-06	17	8–40	4.0 µg/m³	24h	43
2026-06-05	22	5–49	5.4 µg/m³	24h	39
2026-06-04	26	19–42	6.2 µg/m³	24h	41
2026-06-03	18	11–41	4.4 µg/m³	24h	40
2026-06-02	17	4–49	4.1 µg/m³	24h	40
2026-06-01	13	9–21	3.1 µg/m³	21h	41
2026-05-31	27	7–75	7.2 µg/m³	24h	42
2026-05-30	22	6–47	5.2 µg/m³	24h	41
2026-05-29	24	5–64	5.9 µg/m³	24h	42
2026-05-28	23	5–59	5.6 µg/m³	24h	40
2026-05-27	20	2–52	4.8 µg/m³	24h	41
2026-05-26	31	12–54	7.3 µg/m³	24h	43
2026-05-25	15	4–53	3.7 µg/m³	24h	41
2026-05-24	10	4–41	2.5 µg/m³	24h	41
2026-05-23	13	4–35	3.2 µg/m³	24h	41
2026-05-22	14	2–46	3.5 µg/m³	23h	38
2026-05-21	8	1–49	1.8 µg/m³	24h	36
2026-05-20	19	2–54	4.6 µg/m³	15h	39

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