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Division Wide Calendar

The NNEPA Divison Wide Calendar is a place to find any news on what is happening from a single view. You can filter by department and even program with the upcoming events!

Complaint Form

New and improved Complaint Form for Online usage.

 

This new form will allow you to fill out a form electronically.

Latest News

This sections is for any news happening around the NNEPA division.

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Air Quality Index (AQI) 

The purpose of the AQI is to help you understand what local air quality means to your health.

How does the AQI work?

Think of the AQI as a yardstick that runs from 0 to 500, the higher the AQI value, the greater the level of air pollution and the greater the health concern.  For example, an AQI value of 50 represents good air quality with little potential to affect public health, while an AQI value over 300 represents hazardous air quality. An AQI value of 100 generally corresponds to the national air quality standard for the pollutant, which is the level EPA, has set to protect public health. AQI values below 100 are generally thought of as satisfactory. When AQI values are above 100, air quality is considered to be unhealthy for sensitive populations, such has people with upper respiratory diseases.

Understanding the AQI

To make it easier to understand, the AQI is divided into six categories:

Each category corresponds to a different level of health concern and meaning:

"Good" AQI is 0 – 50: Air quality is considered satisfactory, and air pollution poses little or no risk.

"Moderate" AQI is 51 -100: Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people.

"Unhealthy for Sensitive Groups" AQI is 101 – 150: Although, the general public is not likely to be affected at this AQI range, people with upper respiratory diseases, the elderly, and children are at a greater risk to air pollution.

"Unhealthy" AQI is 151 – 200: The general population may begin to experience some adverse health effects, and members of the sensitive groups may experience more serious effects.

"Very Unhealthy" AQI is 201 – 300: This triggers a health alert signifying that everyone may experience more serious health effects.

"Hazardous" AQI greater than 300: This triggers a health alert of an emergency condition that the entire population is more likely to be affected.

AQI Colors

EPA has assigned a specific color to each AQI category to make it easier for people to understand quickly whether air pollution is reaching unhealthy levels in their communities. For example, the color orange means that conditions are "unhealthy for sensitive groups," while red means that conditions may be "unhealthy for everyone".

Air Quality Index Levels of Health Concern Numerical Value Meaning
Good 0 to 50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate 51 to 100 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for Sensitive Groups 101 to 150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151 to 200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201 to 300 Health warnings of emergency conditions. The entire population is more likely to be affected.
Hazardous 301 to 500 Health alert: everyone may experience more serious health effects