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Purple US EPA Index Seems Strange
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1
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66
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August 24, 2026
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Have the EPA PM2.5 Breakpoints Changed?
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4
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164
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August 20, 2026
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How to make US-EPA conversion the default?
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2
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59
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August 15, 2026
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The New PurpleAir Website
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1
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183
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August 12, 2026
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Discrepancy with Nearby Sensor
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5
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87
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August 10, 2026
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Sensor JSON Documentation
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8
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2283
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August 10, 2026
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Retrieving specific fields
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1
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45
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August 9, 2026
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US EPA Conversion: AQI 38; Woodsmoke: AQI 18. What's the "real" air quality?
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0
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56
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August 8, 2026
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Is there a field that returns data with US EPA pm2.5 conversion formula applied?
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16
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2369
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March 4, 2026
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FreeAir - Android widgets for PurpleAir
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13
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199
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August 7, 2026
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Basic data analysis?
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1
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375
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August 6, 2026
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Map is displaying incorrect value
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0
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48
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August 4, 2026
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New Here – Need Help Getting Started
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2
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254
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August 4, 2026
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Introduction
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1
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118
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August 4, 2026
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Support for Matter V1.2
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4
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359
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August 4, 2026
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PA-II-Flex 7.04 Temp Press and Humidity Sensor not reporting
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2
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67
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August 4, 2026
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Replacement Parts Sought for 5 yr old PA-II Classic
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1
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47
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August 3, 2026
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WiFi & Status Indicators
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4
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133
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July 30, 2026
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SD Card Overview
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1
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612
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July 30, 2026
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Sensor light is red and is not reported on map, Worked yesterday
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4
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121
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July 30, 2026
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Can't create API Key
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2
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170
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July 30, 2026
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Adding third party sensors to the map?
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1
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71
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July 29, 2026
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Does PurpleAir have an app?
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14
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16049
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July 29, 2026
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Zen - 3 white one red
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1
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61
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July 28, 2026
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Position Ratings Clarification
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6
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572
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July 28, 2026
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Do I need to clean the sensor?
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4
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161
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July 26, 2026
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On the Today tab, Today/Tonight/Tomorrow forecasts disappear when logged in
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7
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88
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July 24, 2026
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Can you turn wifi off?
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3
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102
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July 24, 2026
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Sensor B is downgraded, but Sensor A is stuck at zero
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2
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77
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July 23, 2026
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Why are the 1-month and 1-year averages graph-only?
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2
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79
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July 23, 2026
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