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Air quality · United States

Maryland Air Quality (AQI) Now

22 Fair
European Air Quality Index
PM2.5
3.2µg/m³WHO limit 15
PM10
3.3µg/m³WHO limit 45
NO₂
11.3µg/m³
O₃
49µg/m³
Desert dust
0µg/m³
UV index
0.0
US AQI
54

Updated: · Source: Copernicus CAMS · Open-Meteo

Air quality in Maryland is fair right now: European Air Quality Index 22. Fine particulate matter (PM2.5) is 3.2 µg/m³, below the WHO guideline. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise. Pollution is expected to peak around 21:00 over the next 48 hours (index 47, moderate).

Maryland 48-hour air quality forecast

02:00: 1402:0003:00: 1404:00: 1505:00: 1606:00: 1707:00: 1708:00: 1808:0009:00: 1910:00: 2111:00: 2312:00: 2313:00: 2314:00: 2314:0015:00: 2416:00: 2417:00: 2418:00: 2219:00: 2020:00: 1920:0021:00: 1822:00: 1923:00: 1900:00: 1901:00: 1902:00: 1902:0003:00: 1904:00: 1805:00: 1806:00: 1707:00: 1808:00: 2008:0009:00: 1810:00: 1811:00: 2012:00: 2313:00: 2614:00: 2814:0015:00: 2916:00: 3017:00: 2918:00: 2419:00: 4020:00: 4520:0021:00: 4722:00: 4723:00: 46

Air quality near Maryland

Cleanest to most polluted.

Frequently asked questions

Is Maryland polluted today?
Air quality in Maryland is fair right now: European Air Quality Index 22. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise.
Is it safe to exercise outdoors in Maryland today?
Yes, air quality is fair right now; fine for outdoor exercise.
How is the air quality index calculated?
The European Air Quality Index is set by the worst of PM2.5, PM10, nitrogen dioxide, ozone and sulphur dioxide: 0–20 good, 20–40 fair, 40–60 moderate, 60–80 poor, 80–100 very poor, above 100 extremely poor.

Values are Copernicus Atmosphere Monitoring Service (CAMS) model forecasts and may differ from local monitoring stations.

Maryland air quality: details

Pollutants and recent days

Nitrogen dioxide (NO₂) is 11.3 µg/m³ and ozone (O₃) 49 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).