What is the air quality trend in Greenbelt?

Over the past 8 days, Greenbelt had an average AQI of 76 based on station measurements. The worst day was 2026-07-17 with AQI 168.

How is Greenbelt air quality measured?

Air quality in Greenbelt 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 Greenbelt, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Greenbelt, 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 · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	21	16–28	5.1 µg/m³	5h	25
2026-07-21	52	28–75	14.3 µg/m³	24h	28
2026-07-20	67	38–80	19.8 µg/m³	24h	27
2026-07-19	61	38–95	17.7 µg/m³	24h	29
2026-07-18	132	58–157	50.2 µg/m³	24h	29
2026-07-17	168	78–224	97.9 µg/m³	24h	31
2026-07-16	61	37–90	16.9 µg/m³	24h	29
2026-07-15	51	42–57	12.7 µg/m³	18h	29

Back to Greenbelt Air Quality