# Some sensors are not returned by the /sensors/ API **URL:** \ **Category:** API\ **Created:** [June 14, 2022, 4:49am UTC](https://community.purpleair.com/t/some-sensors-are-not-returned-by-the-sensors-api/950 "2022-06-14T04:49:03Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![pjrobertson](https://avatars.discourse-cdn.com/v4/letter/p/c57346/32.png) [@pjrobertson](https://community.purpleair.com/u/pjrobertson)\ **Post date:** [June 14, 2022, 4:49am UTC](https://community.purpleair.com/t/some-sensors-are-not-returned-by-the-sensors-api/950/1 "2022-06-14T04:49:03Z")
I am trying to get data from a few sensors in an area around Karachi. The Purple Air map (here: [Real-Time Air Quality Map | PurpleAir](https://map.purpleair.com/1/mAQI/a10/p0/cC0#9.7/24.813/67.0226)) shows one sensor is online and 5-6 are offline. However, when I use the api: `/v1/sensors/` (without no optional params) only one of the sensors in this area (id `40839`) is returned in the response. None of the other sensors are returned. However, what’s strange is that if I find the ID from the Purple Air map (e.g. one sensor has an ID of `101015`) and then I try to access that sensor directly using `/v1/sensors/101015/` then I can get the data. To me, it appears that the `/v1/sensors/` call only returns active sensors, as opposed to all of them. The api call should in fact return all sensors, unless I optionally filtered them using the available params. Here’s some pseudo code: ```auto response = requests.get('/v1/sensors/', data={'fields': 'name'}) // response returns a list of all sensors, but some aren't included. E.g. ID 101015, 56159 aren't returned response = requests.get('/v1/sensors/101015', data={}) // response returns data for this sensor, even though it didn't appear in the above list of sensors. ``` Why might one want to get old sensors that haven’t been updated in a long time? One reason is for historical data purposes.