Birmingham Area Air Quality Forecasts

Date	Air Quality Index Forecast	Responsible Pollutant
Thursday, May 23, 2013	Good	Ozone And Particulate Matter 2.5

Forecast Discussion

Thursday: A trough will remain over the Midwest to Great Lakes Regions. A cold front will move through during the first half of the day and will only lead to a very small chance for rainfall with the upper level lift well to the north. A shortwave will round the base of the trough later in the day and will usher drier air into the area that will clear the skies overnight. Winds will be from the west to northwest up to around 15 mph. PM2.5 and Ozone are expected to be in the GREEN range with cloud cover and increased atmospheric mixing. ML

Note: Forecast available by e-mail, phone (205)933-0583, or on Twitter.

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Daily Air Quality Index Report

Date:   Wednesday, May 22, 2013
24-hr Collection Period Ending at:   02:00 PM

Today's Air Quality Information

Air Quality Index	53
Primary Pollutant	Particulate Matter 2.5
Air Quality Description	Moderate

Note: The Air Quality Index is not reported on weekends or holidays

Maximum Concentrations for Today's Reporting Period

Pollutant	Site	Concentration	Index
Carbon Monoxide	East Thomas-Finley	0.6  ppm	7
Particulate Matter 10	Wylam	21.0  ug/m3	19
Sulfur Dioxide	Fairfield	10.67  ppb	16
Ozone	Tarrant	0.044  ppm	37
Particulate Matter 2.5	Leeds	13.1  ug/m3	53

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National Ambient Air Quality Standards

Carbon Monoxide	8-hr Average Concentration Not to Exceed	9 ppm
Particulate Matter 10	24-hr Concentration Not to Exceed	150 ug/m3
Sulfur Dioxide	1-hr Concentration Not to Exceed	75 ppb
Ozone	8-hr Concentration Not to Exceed	0.075 ppm
Particulate Matter 2.5	24-hr Concentration Not to Exceed	35 ug/m3

Other Useful Links:

• Find Alternative Ways to Commute to Work
• Birmingham Area Real Time Air Quality Data
• Guide to Air Quality and Your Health
• EPA's AIRNow National Air Quality Information
• Alabama Partners For Clean Air
• Alabama State Implementation Plan (SIP) (corrected version 3-23-09)