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  • LRAPA in Purple Air for monitoring smoke from fires. - Reddit
    LRAPA conversion is based on a study of Eugene OR air pollution during a period of heavy wildfire smoke That's why it's considered the best representation Additionally LLNL analyzed purple air sensors during the Camp fire smoke and found the median correction factor to be 0 48, very close the LRAPA factor
  • Update: for Purpleair use AQandU instead of LRAPA : r bayarea - Reddit
    LRAPA shows significant underestimation above 65 ug m3 [150 AQI] I'm not in a sensitive group When "None" shows an AQI of 82 (orange) but "LRAPA" shows an AQI of 53 (yellow), my body feels no ill effects and so the yellow label and lower number seems more correct for me
  • Update: for Purpleair use AQandU instead of LRAPA : r sanfrancisco - Reddit
    Until then, the AQ U correction more closely matches our correction throughout a wide range of concentrations while LRAPA shows significant underestimation above 65 ug m3 [150 AQI] ” (bracketed AQI added by me)
  • Can anyone recommend the best (accurate) site app for checking air . . .
    LRAPA "corrects" for particle density; wood smoke particles are bigger (smaller? sorry, can't remember which) than "standard" air contaminants, and so without correcting for it you get readings that are less accurate In my experience there's a pretty significant amount of tweaking that needs to be done to purple air on a given day
  • Which AQI to use? : r bayarea - Reddit
    Another vote for Purple Air with LRAPA conversion Biggest advantage of Purple Air is that it’s real time data unlike some of the others which appear to be delayed up to an hour If you have a wind app, like Windy, using it together with Purple Air can really give you a sense of airflow and how things are developing throughout the day
  • Additional info about prohibited home wood burning (which is still in . . .
    LRAPA very rarely issues a “red day” advisory (as I said above, this is the first time since 2018) and it will probably only last a few days It doesn’t seem that unreasonable switch heat sources for a few days if that’s a viable option
  • Interpreting PurpleAir map options : r bayarea - Reddit
    LRAPA is a conversion factor for wildfire smoke, but is very specific to the airflow in Eugene, Oregon It seems to overcorrect for the Bay Area a bit too much here's one source , though you'll probably find a few more articles on the topic if you do a little digging
  • How bad how frequent is the paper mill smell where you live?
    Case in point, one Sunday a year(?) ago the whole valley stank like creosote and because so many people filed or called in LRAPA complaints LRAPA went hunting for the smell on that Sunday and fined Baxter Without those complaints it is much harder to track You can either call LRAPA 24 7 or you can file online:


















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