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Mashantucket CDP, CT

ZIP 06339 — Climate & Environment

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Upper Middle ClassLow Snow Area

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 06339

Air Quality (EPA AQI)

County-level annual air quality from EPA. Good days = healthy to breathe; unhealthy = sensitive groups or worse.

40
Median AQI
79.0%
Good Days

Air quality healthy to breathe

2.2%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 06339

Climate normals for Mashantucket CDP, CT show little to no average snow and around 48.9 inches of annual precipitation.

7-day weather forecast

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Sunrise, sunset & moon

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Monthly Temperature

30-year climate normals (avg. monthly temperature)

Climate Data
Hardiness Zone
6b
Annual Snow Days
0
Annual Precipitation
48.91 in

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone6b
Annual precip (in)48.91
Snow days0
Broadband access91.5%
Risk & Air Quality statistics
Risk & Air Quality
IRS net migration511
Median AQI40
Good AQI days79.0%