Data
API The PurpleAir API provides a way to programmatically interact with PurpleAir sensors and data. This category provides information and discussion around the API.
| Topic | Replies | Views | Activity | |
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| About the Data category |
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3 | 9362 | July 9, 2024 |
| API Limits? |
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15 | 2073 | May 22, 2026 |
| PurpleAir Download Tool |
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4 | 309 | May 19, 2026 |
| Why does the "Brazilian PM2.5 (µg/m³)" layer show higher raw concentration values than other µg/m³ layers (Tasmania, Canada BC, Raw PM2.5)? |
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0 | 19 | May 5, 2026 |
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About the PurpleAir API
The PurpleAir API The PurpleAir API is a web service that allows you to obtain air quality data reported by PurpleAir sensors. This is an extensive dataset going back to early 2016. Users wanting to jump straight into … |
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2 | 27829 | May 4, 2026 |
| Request for PurpleAir API Access for Academic Disaster Detection Project (CRISIS-AI) |
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2 | 60 | April 27, 2026 |
| Can't create API Key |
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1 | 61 | April 24, 2026 |
| Using PurpleAir to Track Neighbor Smoke Intrusions..Others? |
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17 | 1899 | April 24, 2026 |
| Do API keys ever expire? |
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0 | 9 | April 24, 2026 |
| Add more info on Sensor Pop-up |
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0 | 7 | April 24, 2026 |
| Historical API endpoint - bulk downloads |
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0 | 82 | March 17, 2026 |
| Sensor JSON Documentation |
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3 | 1931 | March 11, 2026 |
| Is there a field that returns data with US EPA pm2.5 conversion formula applied? |
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16 | 2057 | March 4, 2026 |
| API Fields Descriptions |
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19 | 5336 | February 18, 2026 |
| Calculating Sensor Uptime |
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2 | 56 | February 18, 2026 |
| SD card data doesn't appear to be in UTC |
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0 | 43 | January 30, 2026 |
| Max Daily Pm2.5 Values? |
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1 | 88 | January 27, 2026 |
| How to Calculate the US EPA PM2.5 AQI |
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11 | 6231 | December 20, 2025 |
| API Pricing |
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51 | 14558 | November 28, 2025 |
| How to calculate Raw PM2.5 ALT cf=3.4 from SD card files |
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3 | 215 | November 6, 2025 |
| Strange IAQ instantaneous change |
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1 | 40 | October 22, 2025 |
| Setting Custom Alerts for Specific Sensors |
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0 | 51 | October 15, 2025 |
| Syncing PurpleAir data to Notion |
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0 | 53 | October 13, 2025 |
| The PurpleAir Utility |
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23 | 11979 | October 6, 2025 |
| Higher Logging Rate on the SD Card |
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10 | 1422 | September 19, 2025 |
| VOC conversion, or customised? |
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0 | 61 | September 14, 2025 |
| WHO PM2.5 standard |
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2 | 151 | September 12, 2025 |
| Understanding PurpleAir Serial Output |
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0 | 2312 | January 11, 2023 |
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PurpleAir Data Download Tool
This article is related to the PurpleAir API. If you are unfamiliar with it, check out our About the PurpleAir API page to get started. The PurpleAir Data Download Tool is an open-source tool for downloading PurpleAir… |
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19 | 54589 | September 5, 2025 |
| How to Get Historical Sensor Data Step-by-Step Using the Data Download Tool |
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0 | 672 | August 29, 2025 |