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Air quality · United States

Delaware Air Quality (AQI) Now

52 Moderate
European Air Quality Index
PM2.5
16.9µg/m³WHO limit 15
PM10
17.3µg/m³WHO limit 45
NO₂
13.0µg/m³
O₃
112µg/m³
Desert dust
0µg/m³
UV index
0.0
US AQI
77

Updated: · Source: Copernicus CAMS · Open-Meteo

Air quality in Delaware is moderate right now: European Air Quality Index 52. Fine particulate matter (PM2.5) is 16.9 µg/m³, 1.1 times the WHO 24-hour guideline. People with asthma, heart or lung conditions should reduce strenuous outdoor activity. Pollution is expected to peak around 16:00 over the next 48 hours (index 55, moderate).

Delaware 48-hour air quality forecast

03:00: 1903:0004:00: 2005:00: 2006:00: 2107:00: 2108:00: 2209:00: 2609:0010:00: 2711:00: 3012:00: 3613:00: 4114:00: 4915:00: 5315:0016:00: 5517:00: 5518:00: 5519:00: 5320:00: 4621:00: 3621:0022:00: 2623:00: 22

Air quality near Delaware

Cleanest to most polluted.

Frequently asked questions

Is Delaware polluted today?
Air quality in Delaware is moderate right now: European Air Quality Index 52. People with asthma, heart or lung conditions should reduce strenuous outdoor activity.
Is it safe to exercise outdoors in Delaware today?
For most people yes; with air quality moderate, people with asthma or heart and lung conditions should ease off intense 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.

Delaware air quality: details

Pollutants and recent days

Nitrogen dioxide (NO₂) is 13.0 µg/m³ and ozone (O₃) 112 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).