Air quality · Massachusetts
Air quality in Massachusetts
Air quality (EPA AirNow) data for ZIP codes in Massachusetts. Pick a ZIP below to dive into the air quality summary.
Last verified 2026-05-13 · methodology
What lands here
Pages show the current AQI category (Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, Hazardous), the nearest reporting station, and historical averages.
Source & refresh
EPA AirNow. Refreshed hourly real-time / daily historical. Primary source →
Massachusetts top concern
Lead pipes, coastal flood, older housing
Massachusetts has dense lead-service-line obligations under LCRR in Boston, Lowell, Worcester, Springfield. Coastal AE/VE zones along the South Shore + Cape. Older housing stock means lead-paint risk overlaps with LSL risk.
See Massachusetts state page for the full state-level rollup across all 12 dimensions.
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AQI thresholds — what 'unhealthy for sensitive groups' actually means for you
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