What is the air quality trend in Mount Vernon?

Over the past 2 days, Mount Vernon had an average AQI of 47 based on station measurements. The worst day was 2026-07-21 with AQI 57.

How is Mount Vernon air quality measured?

Air quality in Mount Vernon 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 Mount Vernon, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Mount Vernon, United States.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

21h

PM2.5 Station

21h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	57	28–129	16.0 µg/m³	10h	1
2026-07-20	38	15–77	10.4 µg/m³	11h	1

Back to Mount Vernon Air Quality