Air Quality Forecasts and Alerts

The   APCD   provides   a   summary   6-Day   Air   Quality   Forecast   on   the   South   County   Air   Quality   page.      Forecasts   for   each   monitoring   station   are   on   the   Air   Quality   Maps    page.         You can sign up for APCD AirAware Alerts . The Air Now website also provides AQI forecast maps.  You can also sign up through AirNow to subscribe to EnviroFlash air quality alert notifications.

Historical Air Quality Data

Historical   air   quality   data   is   available   from   the   California   Air   Resources   Board   (CARB)   using   its    Air   Quality   Data   (PST)   Query   Tool .      Select   parameter   PM2.5   or   PM10   (BAM)   and   San Luis Obispo to get PM data for the Nipomo-Guadalupe area.  The data comes from the same monitors shown on the map above, but the names are different, as follows:                   CARB NAME                                      APCD NAME            Arroyo Grande-2391 Willow Road    CDF         Nipomo-Guadalupe Road     Mesa 2        Nipomo-Oso Flaco Lake Road   Oso Flaco

Current Air Quality

The   San   Luis   Obispo   Air   Pollution   Control   District   (APCD)   measures   and   records   air   quality   conditions   at several   monitoring   stations   in   the   Nipomo   area   at   the   locations   shown   on   the   map   to   the   right.      The Mobile station’s location is changed from time to time. Current   air   quality   readings   from   these   sites   can   be   viewed   via   the   APCD   website,   Air   Quality   Conditions.        Separate   tabs   are   provided   to      “Display   AQI”,   “Display   Concentration”   or   “Display   2-Day   Trend”.      In   each tabbed    display,    select    the    type    of    data    and    choose    today    or    yesterday.        Wind    vectors    selection    is optional.  On the map displays, click on a monitoring site circle to see current reading for that site.   The   CDF   and   Mesa   2   stations   are   down   wind   of   the   SVRA   riding   area   when   the   prevailing   Northwest winds   are   blowing.      The   Oso   Flaco   monitor   is   down   wind   of   the   non-riding   area   and   is   the   control   site   for determining   how   natural   background   dust   levels   compare   to   the   dust   levels   emitted   from   the   riding area. Another   site   is   the   Federal   Government’s   AirNow    website.      It   provides   AQI   maps   and   data   for   all   of   the United   States   and   for   each   state   individually.      Click   the   Current   AQI   for   the   current   conditions.      This   site also   lists   the   most   polluted   locations.      Unfortunately   the   Nipomo   Mesa   often   tops   the   list   during   the windiest months.   For the current and forecast AQI for Nipomo postal zone click here .
Air Quality Monitor Sites

Nipomo Mesa - Concerned Citizens for Clean Air

Mesa Air Facts!