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Unhealthful Day

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Unhealthful Day
Any day in which the air quality for any of the 5 major ambient air pollutants—carbon monoxide, nitrogen dioxide, ozone, particulate matter, sulphur dioxide—exceeds an established air quality standard
unhealthful day
Public health Any day in which the air quality for any of the 5 ambient air pollutants–carbon monoxide, nitrogen dioxide, ozone, particulate matter, sulfur dioxide exceeds an established air quality standard. Cf Pollution Standards Index. Cf Unhealthy day.
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State officials believe the three bills before the state Assembly will in the long term help reduce those unhealthful days.
SUPPORT DESIRED FOR AIR BILLS AQMD WANTS CITY BACKING FOR STRICTER ... by Daily News (Los Angeles, CA)
In the South Coast Air Basin, which covers Los Angeles and the San Fernando and Santa Clarita valleys, 68 unhealthful days were recorded as of Dec.
UNSAFE AIR DAYS SHOW A DECREASE FOR THE YEAR by Daily News (Los Angeles, CA)
In the South Coast air basin, which includes Los Angeles, there were 49 unhealthful days, up from 36 last year and 40 the year before.
SMOG SEASON BAD by Daily News (Los Angeles, CA)
 
 
 
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