What is the Air Quality Index (AQI)?

The Air Quality Index (AQI) is a standardized measurement used to communicate how polluted the air currently is or how polluted it is forecast to become. AQI values range from 0 to 500, with higher values indicating greater levels of air pollution and greater health concerns.

What is the current air quality in Connecticut?

The current air quality in Connecticut varies by location and is updated in real-time on our live AQI map. Check the map above to see the latest air quality readings for cities and towns across Connecticut.

How does air quality affect my health?

Poor air quality can cause respiratory issues, aggravate asthma and allergies, and affect cardiovascular health. Sensitive groups including children, elderly, and those with respiratory conditions should limit outdoor activities when AQI levels are unhealthy.

How can I improve indoor air quality in Connecticut?

You can improve indoor air quality by using high-quality HVAC air filters (MERV 11 or higher), maintaining your HVAC system regularly, using air purifiers, ensuring proper ventilation, and keeping windows closed during high outdoor pollution days.

What AQI level is considered safe?

AQI values of 0-50 are considered 'Good' and pose little to no risk. Values of 51-100 are 'Moderate' and acceptable for most people. AQI above 100 becomes increasingly unhealthy, especially for sensitive groups.

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