Export Readings to CSV
Download a device's stored readings as a CSV file for a preset or custom date range of up to 90 days.
Each device page can export its stored readings as a CSV file. One file covers up to 90 days.
Export a Device's Readings
Open the device from the dashboard.
Select Export CSV above the history chart.
Under Range (max 90 days), choose Last 24 hours, Last 7 days, Last 30 days, Last 90 days, or Custom. Last 7 days is the default.
For Custom, set From and To.
Select Download CSV.
The file name uses the device name and the dates, for example classroom-a-2026-10-07-2026-10-14.csv.
The 90-Day Limit
A file holds at most 90 days. If a custom range is longer, displayAQI shows "Exports are capped at 90 days per file. Narrow the range."
The chart's 6m and 1y ranges are longer than one file can hold. To export a longer period, download one file per range of up to 90 days.
displayAQI reads custom dates as UTC days, from the start of the From day to the end of the To day, or to now if that is earlier.
Columns
The file has one row per stored reading and these columns in this order:
| Column | Contents | Unit |
|---|---|---|
timestamp_iso | Reading time in ISO 8601, UTC | |
timestamp_unix | Reading time in Unix seconds | seconds |
temperature_c | Temperature | °C |
humidity_pct | Humidity | % |
co2_ppm | CO₂ | ppm |
pm25_ugm3 | PM2.5 | µg/m³ |
pm10_ugm3 | PM10 | µg/m³ |
tvoc | TVOC | ppb |
tvoc_index | TVOC Index | index |
noise_db | Noise | dB |
battery_pct | Battery | % |
pm1_ugm3 | PM1 | µg/m³ |
pm03_count_per_dl | PM0.3 count | particles per dL |
nox_index | NOx Index | index |
A cell is empty when the device doesn't report that metric. An Air Monitor Lite, for example, reports only temperature, humidity, PM2.5, and PM10, so every other metric column is empty.
The export includes every stored reading in the range, beyond the 2,000 points the chart shows.
When a Device Is Offline or Stale
Learn what Offline, Stale, and the other device statuses mean, where they show, and what to check when a device stops reporting.
Set Up Email Alerts
Get an email when a reading crosses a threshold, a Qingping device goes offline, or a battery runs low, and review every alert in the event history.