Created
August 26, 2020 17:50
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Air Quality AppleScript
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| -- PurpleAir station ID | |
| set theStationID to "6732" | |
| tell application "JSON Helper" | |
| set theWeather to (fetch JSON from ("https://www.purpleair.com/json?show=" & theStationID) with cleaning feed) | |
| set theStatsA to (read JSON from (Stats of item 1 of results of theWeather)) | |
| set theStatsB to (read JSON from (Stats of item 2 of results of theWeather)) | |
| set theLocation to Label of item 1 of results of theWeather | |
| set theLat to (Lat of item 1 of results of theWeather) | |
| set theLon to (Lon of item 1 of results of theWeather) | |
| end tell | |
| set sensorA to v1 of theStatsA | |
| set sensorB to v1 of theStatsB | |
| set sensorAtrend to v of theStatsA | |
| set sensorBtrend to v of theStatsB | |
| set sensorRound to round ((sensorA + sensorB) / 2) | |
| set sensorTrend to round ((sensorAtrend + sensorBtrend) / 2) | |
| set theAverageAQI to aqifromPM(sensorRound) | |
| set theCurrentAQI to aqifromPM(sensorTrend) | |
| if (theAverageAQI - theCurrentAQI) > 9 then | |
| set theTrend to "↓" | |
| else if (theAverageAQI - theCurrentAQI) < -9 then | |
| set theTrend to "↑" | |
| else | |
| set theTrend to "" | |
| end if | |
| if theAverageAQI > 300 then | |
| set theColor to "#7e0023" | |
| set theStatus to "Hazardous" | |
| else if theAverageAQI > 200 then | |
| set theColor to "#8f3f97" | |
| set theStatus to "Very Unhealthy" | |
| else if theAverageAQI > 150 then | |
| set theColor to "#ff0000" | |
| set theStatus to "Unhealthy" | |
| else if theAverageAQI > 100 then | |
| set theColor to "Orange" | |
| set theStatus to "Unhealthy Sensitive" | |
| else if theAverageAQI > 50 then | |
| set theColor to "#bbbb00" | |
| set theStatus to "Moderate" | |
| else | |
| set theColor to "#00e400" | |
| set theStatus to "Good" | |
| end if | |
| return (theStatus & " (" & theAverageAQI & theTrend & ")|color=" & theColor & " | |
| " & "---" & " | |
| " & theLocation & " (Map)|href=https://www.purpleair.com/map?opt=1/mAQI/a10/cC0&select=" & theStationID & "#14/" & theLat & "/" & theLon) | |
| on aqifromPM(thePM) | |
| if thePM > 350.5 then | |
| return calcAQI(thePM, 500, 401, 500, 350.5) | |
| else if thePM > 250.5 then | |
| return calcAQI(thePM, 400.0, 301.0, 350.4, 250.5) | |
| else if thePM > 150.5 then | |
| return calcAQI(thePM, 300.0, 201.0, 250.4, 150.5) | |
| else if (thePM > 55.5) then | |
| return calcAQI(thePM, 200.0, 151.0, 150.4, 55.5) | |
| else if (thePM > 35.5) then | |
| return calcAQI(thePM, 150.0, 101.0, 55.4, 35.5) | |
| else if (thePM > 12.1) then | |
| return calcAQI(thePM, 100.0, 51.0, 35.4, 12.1) | |
| else if (thePM ≥ 0.0) then | |
| return calcAQI(thePM, 50.0, 0.0, 12.0, 0.0) | |
| end if | |
| end aqifromPM | |
| on calcAQI(the CP, the IH, the IL, the BPH, the BPL) | |
| set the A to (the IH - the IL) | |
| set the B to (the BPH - the BPL) | |
| set the C to (the CP - the BPL) | |
| return round ((the A / the B) * the C + the IL) | |
| end calcAQI | |
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