Thanks John, did the map settings, and will experiment with your links. I guess there isn't a way to do that correction in the weewx.conf file then?
> On 10 Jan, 2025, at 13:02, 'John Kline' via weewx-user > <weewx-user@googlegroups.com <mailto:weewx-user@googlegroups.com>> wrote: > > The following settings in the purpleair web app will help you, but you can’t > get the correct AQI because PurpleAir hasn’t implemented it. > > If you want to be sure weewx-purple is showing you a correct AQI, you need to > take a current reading from the sensor, apply the pm2_5 correction (one of > the two links I previously sent) and then use the other link to compute the > AQI. That is what should agree with weewx-purple’s AQI. AQI will show > higher in the green range in weewx-purple since the EPA made that range more > stringent in the new calculation (among other changes). > > <image0.png> > >> On Jan 10, 2025, at 9:24 AM, Dan Hinckley <d...@suiattle.org >> <mailto:d...@suiattle.org>> wrote: >> >> I thought it might be something along those lines. How would I tell is the >> PA unit is using the new correction? >> >> My unit appears here >> <https://map.purpleair.com/air-quality-standards-us-epa-aqi?opt=/1/lp/a10/p604800/cC0&select=196617#11/43.7324/-69.8443> >> on the PA map, and the page displaying your extension output is here >> <https://suiattle.net/CapeSmallHarborWeather/sp/bt/purple/index.html>. >> >>> On 10 Jan, 2025, at 11:51, 'John Kline' via weewx-user >>> <weewx-user@googlegroups.com <mailto:weewx-user@googlegroups.com>> wrote: >>> >>> There are two reasons these can differ. One, the PurpleAir map you are >>> showing is a 2m average while the weewx-purple loop packets are the most >>> recent reading. Also, the EPA has updated the AQI calculation (see: >>> https://www.epa.gov/system/files/documents/2024-02/pm-naaqs-air-quality-index-fact-sheet.pdf >>> >>> <https://www.epa.gov/system/files/documents/2024-02/pm-naaqs-air-quality-index-fact-sheet.pdf> >>> ). Weewx-purple has been updated with the new AQI calculation while the >>> PurpleAir map has not been. >>> >>> A third reason could be if the PurpleAir map is not using the EPA >>> correction (which corrects pm2_5)—see >>> https://www.epa.gov/sites/default/files/2021-05/documents/toolsresourceswebinar_purpleairsmoke_210519b.pdf >>> >>> <https://www.epa.gov/sites/default/files/2021-05/documents/toolsresourceswebinar_purpleairsmoke_210519b.pdf> >>> . I cannot tell if this is so from your screenshot. >>> >>>> On Jan 10, 2025, at 6:40 AM, Dan Hinckley <d...@suiattle.org >>>> <mailto:d...@suiattle.org>> wrote: >>>> >>>> When I access my PA unit directly, the readings I see are different from >>>> the one generated by the John Kline extension >>>> <https://github.com/chaunceygardiner/weewx-purple>. >>>> >>>> When I check right after WeeWx has generated new files on each loop, >>>> direct access to the PA shows this: >>>> >>>> <Screen Shot 2025-01-10 at 09.37.37.png> >>>> >>>> And the WeeWx-Purple displays this: >>>> >>>> <Screen Shot 2025-01-10 at 09.37.56.png> >>>> >>>> I don't know enough about how the AQI is calculated to know if this >>>> discrepancy is normal or is something else. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "weewx-user" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to weewx-user+unsubscr...@googlegroups.com >>>> <mailto:weewx-user+unsubscr...@googlegroups.com>. >>>> To view this discussion visit >>>> https://groups.google.com/d/msgid/weewx-user/C40F997E-F8DC-452D-9D30-3C8307C08AB1%40suiattle.org >>>> >>>> <https://groups.google.com/d/msgid/weewx-user/C40F997E-F8DC-452D-9D30-3C8307C08AB1%40suiattle.org?utm_medium=email&utm_source=footer>. >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to weewx-user+unsubscr...@googlegroups.com >>> <mailto:weewx-user+unsubscr...@googlegroups.com>. >>> To view this discussion visit >>> https://groups.google.com/d/msgid/weewx-user/A5AED7CB-4982-4A46-BD84-8A211646C0E5%40johnkline.com >>> >>> <https://groups.google.com/d/msgid/weewx-user/A5AED7CB-4982-4A46-BD84-8A211646C0E5%40johnkline.com?utm_medium=email&utm_source=footer>. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to weewx-user+unsubscr...@googlegroups.com >> <mailto:weewx-user+unsubscr...@googlegroups.com>. >> To view this discussion visit >> https://groups.google.com/d/msgid/weewx-user/2D6FE60B-105B-4524-86BA-F94D046B70F1%40suiattle.org >> >> <https://groups.google.com/d/msgid/weewx-user/2D6FE60B-105B-4524-86BA-F94D046B70F1%40suiattle.org?utm_medium=email&utm_source=footer>. > > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com > <mailto:weewx-user+unsubscr...@googlegroups.com>. > To view this discussion visit > https://groups.google.com/d/msgid/weewx-user/A2CF2B8A-E028-48C3-AA6E-2A1357F1F3FB%40johnkline.com > > <https://groups.google.com/d/msgid/weewx-user/A2CF2B8A-E028-48C3-AA6E-2A1357F1F3FB%40johnkline.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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