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# State Air Quality Category Tables | ||
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_Last updated on February 27, 2024_ | ||
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_Disclaimer: Data presented here come from a variety of sources and do not | ||
represent official EPA measurements. Please visit | ||
[AirNow](https://www.airnow.gov) for official measurements._ | ||
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--- | ||
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The US EPA recently announced updated NAAQS (National Ambient Air Quality | ||
Standards) for PM2.5. The lowered thresholds will result in a change in the | ||
number of days in a particular Air Quality Category (AQC). | ||
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The number of days a community spends in each category is a useful health | ||
statistic. | ||
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The US EPA defines the following Air Quality Categories: | ||
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* Good -- Air quality is satisfactory, and air pollution poses little or no risk. | ||
* Moderate -- Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. | ||
* USG (Unhealthy for Sensitive Groups) -- Members of sensitive groups may experience health effects. The general public is less likely to be affected. | ||
* Unhealthy -- Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. | ||
* Very Unhealthy -- Health alert: The risk of health effects is increased for everyone. | ||
* Hazardous -- Health warning of emergency conditions: everyone is more likely to be affected. | ||
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## Daily AQC Reports by State and Month | ||
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The following table provides linnks to reports summarizing the cumulative number | ||
of days PM2.5 monitors spent in each Air Quality Category during a given month. | ||
These tables and plots are calculated using existing (2023) and updated (2024) | ||
NAAQS and allow for an easy review of the impact of the updated NAAWQS. Each | ||
report covers one state for a given month with tables and plots for the years | ||
2014 to 2023. | ||
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### Georgia | ||
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[Jan](./daily_AQC_tables_GA_01.html) | ||
[Feb](./daily_AQC_tables_GA_02.html) | ||
[Mar](./daily_AQC_tables_GA_03.html) | ||
[Apr](./daily_AQC_tables_GA_04.html) | ||
[May](./daily_AQC_tables_GA_05.html) | ||
[Jun](./daily_AQC_tables_GA_06.html) | ||
[Jul](./daily_AQC_tables_GA_06.html) | ||
[Aug](./daily_AQC_tables_GA_08.html) | ||
[Sep](./daily_AQC_tables_GA_09.html) | ||
[Oct](./daily_AQC_tables_GA_10.html) | ||
[Nov](./daily_AQC_tables_GA_11.html) | ||
[Dec](./daily_AQC_tables_GA_12.html) | ||
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_Note that these reports do not include data from temporary monitors._ | ||
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---- | ||
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Source code for generating these reports is available at: | ||
[https://github.com/MazamaScience/air-quality-examples/tree/main/2024/State_AQC_Tables](https://github.com/MazamaScience/air-quality-examples/tree/main/2024/State_AQC_Tables) | ||
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