What is the air quality trend in Saint John West?

Over the past 15 days, Saint John West had an average AQI of 63 based on station measurements. The worst day was 2026-05-22 with AQI 109.

How is Saint John West air quality measured?

Air quality in Saint John West 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 Saint John West, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Saint John West, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

149h

PM2.5 Station

149h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	31	6–88	8.5 µg/m³	8h	2
2026-05-29	63	16–500	75.3 µg/m³	17h	2
2026-05-28	24	10–42	5.8 µg/m³	9h	2
2026-05-27	71	19–258	32.6 µg/m³	14h	2
2026-05-26	79	14–500	72.2 µg/m³	14h	2
2026-05-25	49	8–184	19.1 µg/m³	12h	2
2026-05-24	55	13–131	16.9 µg/m³	15h	2
2026-05-23	56	2–100	18.1 µg/m³	6h	2
2026-05-22	109	12–500	89.2 µg/m³	13h	1
2026-05-21	86	29–179	32.9 µg/m³	11h	2
2026-05-20	96	9–179	45.6 µg/m³	6h	2
2026-05-19	64	32–100	20.2 µg/m³	4h	2
2026-05-18	86	18–165	35.5 µg/m³	4h	2
2026-05-17	58	16–154	19.7 µg/m³	4h	2
2026-05-16	25	8–66	6.2 µg/m³	12h	3

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