What is the air quality trend in Lorton?

Over the past 8 days, Lorton had an average AQI of 79 based on station measurements. The worst day was 2026-07-17 with AQI 168.

How is Lorton air quality measured?

Air quality in Lorton 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 Lorton, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	24	20–26	5.8 µg/m³	4h	26
2026-07-21	52	27–73	14.1 µg/m³	24h	31
2026-07-20	69	58–80	20.5 µg/m³	24h	31
2026-07-19	65	36–116	19.3 µg/m³	24h	33
2026-07-18	130	56–161	50.3 µg/m³	24h	33
2026-07-17	168	77–215	98.1 µg/m³	24h	35
2026-07-16	74	54–163	23.5 µg/m³	24h	33
2026-07-15	52	38–69	13.1 µg/m³	19h	34

Back to Lorton Air Quality