What is the air quality trend in Owen Sound?

Over the past 21 days, Owen Sound had an average AQI of 40 based on station measurements. The worst day was 2026-07-20 with AQI 54.

How is Owen Sound air quality measured?

Air quality in Owen Sound 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 Owen Sound, Canada

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

344h

PM2.5 Station

344h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	53	53–53	12.9 µg/m³	1h	2
2026-08-07	50	6–177	16.9 µg/m³	16h	2
2026-08-06	38	8–76	9.8 µg/m³	22h	2
2026-08-05	31	9–68	7.8 µg/m³	23h	2
2026-08-04	47	21–157	13.6 µg/m³	18h	2
2026-08-03	48	5–132	13.4 µg/m³	19h	2
2026-08-02	35	11–74	8.7 µg/m³	17h	2
2026-08-01	40	9–162	12.0 µg/m³	15h	2
2026-07-31	34	9–84	8.8 µg/m³	15h	2
2026-07-30	30	16–75	7.9 µg/m³	14h	2
2026-07-29	31	9–57	7.5 µg/m³	21h	2
2026-07-28	44	10–84	12.0 µg/m³	17h	2
2026-07-27	44	10–151	12.2 µg/m³	20h	2
2026-07-26	34	7–93	9.1 µg/m³	14h	2
2026-07-25	36	3–69	9.3 µg/m³	11h	1
2026-07-24	40	12–161	12.2 µg/m³	16h	1
2026-07-23	35	13–127	9.7 µg/m³	16h	1
2026-07-22	51	14–151	15.2 µg/m³	16h	1
2026-07-21	32	9–86	8.4 µg/m³	15h	1
2026-07-20	54	16–162	16.6 µg/m³	23h	2
2026-07-19	44	7–78	12.1 µg/m³	15h	2

Back to Owen Sound Air Quality