Indicator Gauge Icon Legend

Red is bad, green is good, blue is not statistically different/neutral.

Compared to Distribution

an indicator guage with the arrow in the green the value is in the best half of communities.

an indicator guage with the arrow in the yellow the value is in the 2nd worst quarter of communities.

an indicator guage with the arrow in the red the value is in the worst quarter of communities.

Compared to Target

green circle with white tick inside it meets target; red circle with white cross inside it does not meet target.

Compared to a Single Value

green diamond with downward arrow inside it lower than the comparison value; red diamond with downward arrow inside it higher than the comparison value; blue diamond with downward arrow inside it not statistically different from comparison value.

Trend

green square outline with upward trending arrow inside it green square outline with downward trending arrow inside it non-significant change over time; green square with upward trending arrow inside it green square with downward trending arrow inside it significant change over time; blue square with equals sign no change over time.

Compared to Prior Value

green triangle with upward trending arrow inside it higher than the previous measurement period; green triangle with downward trending arrow inside it lower than the previous measurement period; blue equals sign no statistically different change  from previous measurement period.

green chart bars Significantly better than the overall value

red chart bars Significantly worse than the overall value

light blue chart bars No significant difference with the overall value

gray chart bars No data on significance available

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Air Quality Index (% Moderate)

Measurement Period: 2020
This indicator shows the percentage of days recorded in the Air Quality Index (AQI) categorized as medium for Ozone and PM 2.5.

Why is this important?

Prolonged exposure to poor air quality has been associated with an increased risk of respiratory and cardiovascular diseases including asthma, heart disease, stroke, and lung cancer. This indicator demonstrates the percentage of days recorded in each of the AQI categories over a 10-year timeframe (2011 – 2020) to evaluate trend data for air quality in Dane County. As shown in the current and accompanying figures, approximately 79.2% of the days were classified as “good” air quality over the past 10 years; the remaining measurements were classified as “moderate” (20.6%) or “unhealthy for sensitive groups” (0.2%). No measurements were classified as “very unhealthy” or “hazardous” in Dane County during this timeframe.
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County: Dane

19.6%
Source: U.S. Environmental Protection Agency
Measurement period: 2020
Maintained by: Public Health Madison & Dane County
Last update: August 2021
Compared to See the Legend
Compared to the prior value, Dane (19.6%) is less and better than the previously measured value (20.1%).
Prior Value
(20.1%)
Over time, the Dane value is decreasing, not significantly.
Trend

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Indicator Values
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Download Dane Indicator Data CSV

Data Source

Filed under: Environmental Health / Air, Physical Determinants of Health, Infants, Children, Teens, Adults, Older Adults

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