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Air Quality Forecast

Air quality forecasts are issued every day of the year for the Birmingham area and are based on the Air Quality Index (AQI).  The AQI is a color-coded scale that reports how clean or polluted the air is and the associated health effects.

The Jefferson County Department of Health forecasts fine particles (PM2.5) year-round and the Alabama Department of Environmental Management forecasts Ozone (O3) during the warm season.

An Air Quality Alert is issued when the AQI is forecast to reach 101 or higher.  The public is encouraged to decrease their personal emissions on days with higher pollution levels.

Forecast

Fri Aug 18, 2017
Ozone 31
PM 2.5 48
48
0
50
100
150
200
Sat Aug 19, 2017
Ozone 64
PM 2.5 53
64
0
50
100
150
200

Extended Forecast

Sun Aug 20, 2017
Ozone 58
PM 2.5 53
Mon Aug 21, 2017
Ozone 47
PM 2.5 60

Forecast Discussion



Friday: A cold front will move through the area. There will be a drop in atmospheric moisture so not a lot of rain is expected. Storms will be scattered ahead of the front. High temperatures will be in the lower 90s. Winds will be 5-10 mph from the southwest and then will switch to come from the northwest. PM2.5 and Ozone are both expected to be in the green (good) range. ML

Saturday-Monday: Surface ridging will keep the area dry over the weekend with mostly sunny skies. The passage of a cold front on Friday will usher in drier air and lower humidity levels. An upper ridge will build into the area on Monday and moisture will begin to move back into the area. The solar eclipse on Monday will disrupt the production of ozone so concentrations are expected to decrease. High temperatures will reach the low to mid 90s each day. PM2.5 is expected to be in the yellow range through Monday. Ozone is expected to be in the yellow range over the weekend and in the green range on Monday. ML

Daily Air Quality Index Report




Date: August 17, 2017
Critical Pollutant: Particulate Matter 2.5 (PM2.5)
Air Quality Index: 62
Air Quality Description: Moderate

Pollutant : AQI Value
Carbon Monoxide (CO) : 5
Nitrogen Dioxide (NO2) : 12
Ozone (O3) : 23
Particulate Matter 2.5 (PM2.5) : 62
Particulate Matter 10 (PM10) : 30
Sulfur Dioxide (SO2) : 2

Air quality forecasts are also available via email by signing up for EnviroFlash, on Twitter, and by phone recording:

2016-05-13
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