What is the air quality trend in Niagara Falls?

Over the past 8 days, Niagara Falls had an average AQI of 39 based on station measurements. The worst day was 2026-05-27 with AQI 49.

How is Niagara Falls air quality measured?

Air quality in Niagara Falls 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 Niagara Falls, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	35	32–37	8.3 µg/m³	3h	2
2026-05-29	34	12–77	8.7 µg/m³	24h	7
2026-05-28	38	12–165	11.6 µg/m³	24h	6
2026-05-27	49	17–173	16.2 µg/m³	24h	7
2026-05-26	35	17–80	8.9 µg/m³	24h	6
2026-05-25	40	10–109	10.7 µg/m³	24h	6
2026-05-24	38	5–124	10.8 µg/m³	24h	6
2026-05-23	46	14–111	13.2 µg/m³	21h	7

Back to Niagara Falls Air Quality