SoCal Air Quality Friday Was Pretty Good, But Some Sensitive People Still Struggled

 Air quality was in the good to unhealthful for sensitive groups range in the South Coast Air Basin Friday.
The Air Quality Management District (AQMD) predicts air quality in the good to moderate range for Saturday.
Following are today's peak Air Quality Index levels for ozone, carbon monoxide and nitrogen dioxide in each area of the basin. NR indicates no reading was available.

   Area                               Ozone     Carbon     Nitrogen
                                               Monoxide    Dioxide

   Coastal Area                        36          6          25
   Metropolitan Los Angeles            30          8          31
   San Fernando-Santa Clarita Valleys  51          8          34
   San Gabriel/Pomona Valleys          39          9          37
   Inland Orange County                36          5          18
   Riverside/San Bernardino            87         10          36
   Hemet-Elsinore                     111          5          21
   Big Bear Lake                       NR         NR          NR
   High Desert                         NR         NR          NR
   Banning                             90         NR          20
   Low Desert                          71          3          10

Earlier today, the AQMD released the AQI forecast for Saturday, which indicates the highest AQI level, whether for ozone, carbon monoxide or nitrogen
dioxide, for each area in the basin.

   Area                           AQI Forecast for Saturday

  Coastal Area                            AQI:  48  Ozone
  San Gabriel                             AQI:  49  PM10/PM2.5
  Inland Orange County                    AQI:  49  Ozone
  Big Bear Lake                           AQI:  48  Ozone
  Northern Mojave Desert                  AQI:  48  Ozone
  Metropolitan Area                       AQI:  60  PM10/PM2.5
  San Fernando/Santa Clarita Valleys      AQI:  58  Ozone
  Riverside Valley                        AQI:  78  PM10/PM2.5
  San Bernardino Valley                   AQI:  72  PM10/PM2.5
  Hemet/Elsinore Area                     AQI:  74  Ozone
  Temecula/Anza Area                      AQI:  67  Ozone
  San Gabriel Mountains                   AQI:  57  Ozone
  San Bernardino Mountains                AQI:  57  Ozone
  Banning Pass Area                       AQI:  77  Ozone
  Coachella Valley/Low Desert             AQI:  57  Ozone
  Antelope Valley                         AQI:  57  Ozone
  Victor Valley                           AQI:  57  Ozone
  Central Mojave Desert                   AQI:  65  Ozone

The AQI measures the amount of pollutants in the air, whether ozone, carbon monoxide, nitrogen dioxide or PM10 (particulate matter).
Conditions are considered ``good'' when AQI levels are between zero and 50. No health impacts are expected when air quality is in this range.
When AQI levels are 51 to 100, air quality is deemed ``moderate,'' which means that unusually sensitive people should consider limiting prolonged outdoor exertion.
Air quality is designated ``unhealthful for sensitive groups'' when AQI levels are from 101 to 150. At this level, active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
When AQI levels are between 151 and 200, air quality is deemed ``unhealthful.'' At this level, active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion. Everyone else, especially children, should limit prolonged outdoor exertion.
``Very unhealthful'' air quality is declared when the AQI registers between 201 and 300. Active children and adults, and people with respiratory disease,should avoid all outdoor exertion when the AQI is at this level. Everyone else, especially children, should limit outdoor exertion.

The AQMD headquarters is located in Diamond Bar, California.

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