What is the air quality trend in Peterborough?

Over the past 21 days, Peterborough had an average AQI of 52 based on station measurements. The worst day was 2026-05-21 with AQI 83.

How is Peterborough air quality measured?

Air quality in Peterborough 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 Peterborough, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

402h

PM2.5 Station

402h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	49	23–154	14.7 µg/m³	10h	2
2026-05-29	46	7–152	13.3 µg/m³	20h	2
2026-05-28	40	9–140	11.2 µg/m³	20h	2
2026-05-27	53	2–132	15.3 µg/m³	21h	2
2026-05-26	40	8–152	12.0 µg/m³	18h	2
2026-05-25	56	4–133	17.2 µg/m³	23h	2
2026-05-24	51	15–152	15.6 µg/m³	21h	2
2026-05-23	64	9–193	23.8 µg/m³	21h	2
2026-05-22	51	11–368	24.4 µg/m³	21h	2
2026-05-21	83	12–320	36.3 µg/m³	22h	2
2026-05-20	66	10–214	25.9 µg/m³	20h	3
2026-05-19	47	11–148	14.2 µg/m³	20h	2
2026-05-18	39	6–141	11.5 µg/m³	19h	2
2026-05-17	47	20–163	16.3 µg/m³	8h	2
2026-05-16	40	8–70	10.3 µg/m³	18h	3
2026-05-15	48	6–139	14.0 µg/m³	22h	3
2026-05-14	69	18–146	21.7 µg/m³	21h	3
2026-05-13	50	11–142	14.2 µg/m³	21h	3
2026-05-12	48	17–106	13.8 µg/m³	19h	3
2026-05-11	71	4–158	23.2 µg/m³	23h	3
2026-05-10	45	10–135	13.3 µg/m³	14h	3

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