OrbisViews

Air quality · Massachusetts

Boston Air Quality (AQI) Now

29 Fair
European Air Quality Index
PM2.5
8.0µg/m³WHO limit 15
PM10
8.1µg/m³WHO limit 45
NO₂
16.3µg/m³
O₃
77µg/m³
Desert dust
0µg/m³
UV index
0.0
US AQI
52

Updated: · Source: Copernicus CAMS · Open-Meteo

Air quality in Boston is fair right now: European Air Quality Index 29. Fine particulate matter (PM2.5) is 8.0 µg/m³, below the WHO guideline. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise. Pollution is expected to peak around 23:00 over the next 48 hours (index 59, moderate).

Boston 48-hour air quality forecast

10:00: 1810:0011:00: 2012:00: 2113:00: 2314:00: 2415:00: 2516:00: 2516:0017:00: 2518:00: 2219:00: 2720:00: 3321:00: 3522:00: 3422:0023:00: 3200:00: 2901:00: 2502:00: 2203:00: 2204:00: 2304:0005:00: 2706:00: 3607:00: 4408:00: 4609:00: 4210:00: 3110:0011:00: 2312:00: 2313:00: 2514:00: 2615:00: 2716:00: 2716:0017:00: 2418:00: 3519:00: 4520:00: 5221:00: 5522:00: 5822:0023:00: 59

Air quality near Boston

Cleanest to most polluted.

Frequently asked questions

Is Boston polluted today?
Air quality in Boston is fair right now: European Air Quality Index 29. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise.
Is it safe to exercise outdoors in Boston 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.

Boston air quality: details

Pollutants and recent days

Nitrogen dioxide (NO₂) is 16.3 µg/m³ and ozone (O₃) 77 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).