About the Front Range Air Quality Thumbnail

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Front-Range Denver advisories thumbnail forecast image dissected described. Current advisory conditions are available on the Front-Range Denver advisories page.

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 alert: everyone may experience more serious health effects
Hazardous 300 to 500 Health warnings of emergency conditions. The entire population is more likely to be affected.

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