What is the air quality trend in Halifax?

Over the past 8 days, Halifax had an average AQI of 42 based on station measurements. The worst day was 2026-10-20 with AQI 60.

How is Halifax air quality measured?

Air quality in Halifax 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 Halifax, United Kingdom

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

Historical PM2.5 and AQI trend from monitoring stations near Halifax, United Kingdom.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 16 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	56	20–137	15.9 µg/m³	10.3	16h	11
2026-10-20	60	34–107	16.9 µg/m³	21.1	24h	12
2026-10-19	40	17–81	10.2 µg/m³	6.8	24h	9
2026-10-18	29	13–74	7.1 µg/m³	2.6	24h	9
2026-10-17	41	11–79	11.0 µg/m³	5.1	24h	11
2026-10-16	34	7–102	8.8 µg/m³	6.3	24h	8
2026-10-15	40	10–184	13.2 µg/m³	3.3	24h	9
2026-10-14	38	19–81	10.9 µg/m³	3.2	6h	7

Back to Halifax Air Quality