# Uncategorized **URL:** https://community.purpleair.com/c/uncategorized/1.md [Latest](https://community.purpleair.com/latest.md) · [Categories](https://community.purpleair.com/categories.md) --- ## [Welcome to the PurpleAir Community](https://community.purpleair.com/t/welcome-to-the-purpleair-community/7)
**Author:** [@PurpleAir](https://community.purpleair.com/u/PurpleAir)\ **Replies:** 0\ **Last updated:** [August 27, 2021, 12:07am UTC](https://community.purpleair.com/t/welcome-to-the-purpleair-community/7 "2021-08-27T00:07:45Z")
PurpleAir would not be what it is without you, our incredible community of citizen and professional scientists, curious members of the public, or concerned citizens. You make it possible to provide this service by hostin… --- ## [Disconnecting unit during winter](https://community.purpleair.com/t/disconnecting-unit-during-winter/22915)
**Author:** [@kwimberg](https://community.purpleair.com/u/kwimberg)\ **Replies:** 0\ **Last updated:** [September 8, 2026, 1:52pm UTC](https://community.purpleair.com/t/disconnecting-unit-during-winter/22915 "2026-09-08T13:52:23Z")
During winter where I live, the air quality is always clean. Would it benefit the longevity of my sensor to disconnect it and reconnect in the spring? --- ## [Have the EPA PM2.5 Breakpoints Changed?](https://community.purpleair.com/t/have-the-epa-pm2-5-breakpoints-changed/22858)
**Author:** [@Wiley\_Sanders](https://community.purpleair.com/u/Wiley_Sanders)\ **Replies:** 4\ **Last updated:** [August 20, 2026, 2:56am UTC](https://community.purpleair.com/t/have-the-epa-pm2-5-breakpoints-changed/22858 "2026-08-20T02:56:49Z")
Previous posts for the EPA PM 2.5 show these breakpoints: Good 0 - 50 | 0.0 – 12.0 Moderate 51 - 100 | 12.1 – 35.4 Unhealthy for Sensitive Groups 101 – 15… --- ## [PA-II-Flex 7.04 Temp Press and Humidity Sensor not reporting](https://community.purpleair.com/t/pa-ii-flex-7-04-temp-press-and-humidity-sensor-not-reporting/22852)
**Author:** [@RosieCreek](https://community.purpleair.com/u/RosieCreek)\ **Replies:** 2\ **Last updated:** [August 4, 2026, 1:24am UTC](https://community.purpleair.com/t/pa-ii-flex-7-04-temp-press-and-humidity-sensor-not-reporting/22852 "2026-08-04T01:24:31Z")
My BME Sensor which is not reporting any data. I have a second PA-II which is reporting properly and I have interchanged the Sensors between the two. The BME Sensor from the PA-II-Flex works in the second PA-II so the pr… --- ## [Sensor light is red and is not reported on map, Worked yesterday](https://community.purpleair.com/t/sensor-light-is-red-and-is-not-reported-on-map-worked-yesterday/22815)
**Author:** [@7.09.2025](https://community.purpleair.com/u/7.09.2025)\ **Replies:** 4\ **Last updated:** [July 30, 2026, 11:41am UTC](https://community.purpleair.com/t/sensor-light-is-red-and-is-not-reported-on-map-worked-yesterday/22815 "2026-07-30T11:41:42Z")
Just hooked up my sensor a few days ago and it has been on map until this morning. Light is red. Unplugged it and plugged it back in but it still is not reporting. --- ## [Do I need to clean the sensor?](https://community.purpleair.com/t/do-i-need-to-clean-the-sensor/22819)
**Author:** [@wooper](https://community.purpleair.com/u/wooper)\ **Replies:** 4\ **Last updated:** [July 26, 2026, 6:38pm UTC](https://community.purpleair.com/t/do-i-need-to-clean-the-sensor/22819 "2026-07-26T18:38:34Z")
PA-II, about 3 years old now. Is this considered a big discrepancy in sensors that I should do I thorough cleaning on? I did try vacuuming and using air to blow it out but not much has changed in terms of AQI value/di… --- ## [Paku app not working](https://community.purpleair.com/t/paku-app-not-working/22805)
**Author:** [@KAT1](https://community.purpleair.com/u/KAT1)\ **Replies:** 2\ **Last updated:** [July 18, 2026, 1:15pm UTC](https://community.purpleair.com/t/paku-app-not-working/22805 "2026-07-18T13:15:03Z")
There’s horrible air quality spilling into the middle of the country right now, and the Paku app will not work. It started acting up last night now this morning. The app has all grayed out sensors, except for the permane… --- ## [Seeking Guidance: Accessing PurpleAir Monitor Data for Virginia](https://community.purpleair.com/t/seeking-guidance-accessing-purpleair-monitor-data-for-virginia/22609)
**Author:** [@Carolyn\_Caraballo](https://community.purpleair.com/u/Carolyn_Caraballo)\ **Replies:** 1\ **Last updated:** [June 26, 2026, 12:24am UTC](https://community.purpleair.com/t/seeking-guidance-accessing-purpleair-monitor-data-for-virginia/22609 "2026-06-26T00:24:56Z")
Hello everyone, I am currently working on a research project related to air quality monitoring and am trying to identify all PurpleAir monitors located in the state of Virginia. Specifically, I am looking for a way to o… --- ## [All I sse is a gray circle](https://community.purpleair.com/t/all-i-sse-is-a-gray-circle/22776)
**Author:** [@vdelp7cs](https://community.purpleair.com/u/vdelp7cs)\ **Replies:** 1\ **Last updated:** [June 25, 2026, 9:28pm UTC](https://community.purpleair.com/t/all-i-sse-is-a-gray-circle/22776 "2026-06-25T21:28:59Z")
There isn’t a number in the gray circle on the map. I have checked my PA-II-ZEN sensor, which is responding with a bright green light. My device ID - D8:BC:38:84:7E:9D Suggestions appreciated. ~Victor Del Pizzo --- ## [Changing Router Connection](https://community.purpleair.com/t/changing-router-connection/22752)
**Author:** [@StormChaser45662](https://community.purpleair.com/u/StormChaser45662)\ **Replies:** 0\ **Last updated:** [June 7, 2026, 10:14pm UTC](https://community.purpleair.com/t/changing-router-connection/22752 "2026-06-07T22:14:41Z")
How do I change the router connection to my sensor? --- ## [White pine pollen](https://community.purpleair.com/t/white-pine-pollen/22739)
**Author:** [@John1953](https://community.purpleair.com/u/John1953)\ **Replies:** 0\ **Last updated:** [June 6, 2026, 8:14pm UTC](https://community.purpleair.com/t/white-pine-pollen/22739 "2026-06-06T20:14:19Z")
Does anyone know how the tree pollen effects the readings on my outdoor sensor white pine pollen . I turn outdoor off. That green pollen is terrible --- ## [Changing My Owner's Email](https://community.purpleair.com/t/changing-my-owners-email/22674)
**Author:** [@Mark\_Nall](https://community.purpleair.com/u/Mark_Nall)\ **Replies:** 0\ **Last updated:** [May 12, 2026, 4:39pm UTC](https://community.purpleair.com/t/changing-my-owners-email/22674 "2026-05-12T16:39:19Z")
How do I change my Owner’s Email from my original one? My email was associated with my previous job when I first registered it and I’ve changed jobs since (schools) and it is installed at the school I currently work at.… --- ## [Distance running](https://community.purpleair.com/t/distance-running/22648)
**Author:** [@jm\_glenhaven](https://community.purpleair.com/u/jm_glenhaven)\ **Replies:** 0\ **Last updated:** [April 27, 2026, 7:13pm UTC](https://community.purpleair.com/t/distance-running/22648 "2026-04-27T19:13:03Z")
Interested in AQ effects on distance running times --- ## [Way too low/zero readings nationwide](https://community.purpleair.com/t/way-too-low-zero-readings-nationwide/22585)
**Author:** [@Airboy](https://community.purpleair.com/u/Airboy)\ **Replies:** 7\ **Last updated:** [April 8, 2026, 5:12pm UTC](https://community.purpleair.com/t/way-too-low-zero-readings-nationwide/22585 "2026-04-08T17:12:41Z")
For about a week or so, readings nationwide, even into Canada and elsewhere zeroed out or way too low readings pretty much everywhere. Today, 3/10/26 still showing low erroneous readings. Both on phone and desktop. How … --- ## [Power Consumption for Solar Calculations](https://community.purpleair.com/t/power-consumption-for-solar-calculations/22484)
**Author:** [@John\_Petersen](https://community.purpleair.com/u/John_Petersen)\ **Replies:** 3\ **Last updated:** [January 21, 2026, 5:30pm UTC](https://community.purpleair.com/t/power-consumption-for-solar-calculations/22484 "2026-01-21T17:30:04Z")
We are using Purple Air sensors to collect data at one minute intervals. We designed a solar charging system that incorporates a 12V 30 W solar panel with a an UltraSmart MPPT Charge Controller optimized for LiFePO4 bat… --- ## [Flex A + B don't match each other or map. What's up?](https://community.purpleair.com/t/flex-a-b-dont-match-each-other-or-map-whats-up/22452)
**Author:** [@davepwhite](https://community.purpleair.com/u/davepwhite)\ **Replies:** 3\ **Last updated:** [January 16, 2026, 4:55pm UTC](https://community.purpleair.com/t/flex-a-b-dont-match-each-other-or-map-whats-up/22452 "2026-01-16T16:55:28Z")
I am still quite new to this. So pardon the newbie question(s)… Upon my initial install and test, both A+B were virtually identical in readings. But now after only a couple days use, they are diverging. And I find this … --- ## [Voltage converter needed?](https://community.purpleair.com/t/voltage-converter-needed/22439)
**Author:** [@Bgbuchanan](https://community.purpleair.com/u/Bgbuchanan)\ **Replies:** 2\ **Last updated:** [November 29, 2025, 10:32pm UTC](https://community.purpleair.com/t/voltage-converter-needed/22439 "2025-11-29T22:32:31Z")
I’m considering taking my Zen to places with 220-240V, 50 Hz electrical service. I know that I need plug adapters. Do I need a voltage adapter, too? Will my device be affected by the change in frequency (Hertz)? --- ## [High/low Data](https://community.purpleair.com/t/high-low-data/22394)
**Author:** [@billt](https://community.purpleair.com/u/billt)\ **Replies:** 6\ **Last updated:** [November 27, 2025, 6:43pm UTC](https://community.purpleair.com/t/high-low-data/22394 "2025-11-27T18:43:55Z")
How can I readily obtain high/low readings from my sensor each morning for the previous 24 hours? The graph on the map is usually not current. --- ## [Neighbors Outdoor wood furnaces](https://community.purpleair.com/t/neighbors-outdoor-wood-furnaces/22431)
**Author:** [@Randy1](https://community.purpleair.com/u/Randy1)\ **Replies:** 0\ **Last updated:** [November 21, 2025, 2:12pm UTC](https://community.purpleair.com/t/neighbors-outdoor-wood-furnaces/22431 "2025-11-21T14:12:19Z")
I have 3 neighbors with outdoor wood furnaces 200-300 ft from my house, and have developed medical problems from them, I live in Ramsey Minnesota, I have called 911 5 times, gone to city council meetings and told them ab… --- ## [PurpleAir Feedback](https://community.purpleair.com/t/purpleair-feedback/22419)
**Author:** [@parkernathan](https://community.purpleair.com/u/parkernathan)\ **Replies:** 2\ **Last updated:** [November 15, 2025, 1:43am UTC](https://community.purpleair.com/t/purpleair-feedback/22419 "2025-11-15T01:43:37Z")
I’ve owned a PurpleAir Zen for a while. I also own a PurpleAir Pixel. I used to work for AEM/Earth Networks/Davis Instruments for 20 years (that ended in September, so I’m officially on the job hunt). I owned a few Davis… --- ## [Operating temperature](https://community.purpleair.com/t/operating-temperature/22407)
**Author:** [@BrianSieben](https://community.purpleair.com/u/BrianSieben)\ **Replies:** 0\ **Last updated:** [October 31, 2025, 9:20pm UTC](https://community.purpleair.com/t/operating-temperature/22407 "2025-10-31T21:20:42Z")
Are you aware of what the minimum and maximum operating air temperatures are for Purple Air? --- ## [Pollution measuring devices in Baghdad](https://community.purpleair.com/t/pollution-measuring-devices-in-baghdad/22355)
**Author:** [@Alzaidi](https://community.purpleair.com/u/Alzaidi)\ **Replies:** 0\ **Last updated:** [September 26, 2025, 6:25am UTC](https://community.purpleair.com/t/pollution-measuring-devices-in-baghdad/22355 "2025-09-26T06:25:41Z")
Can I get pollution measuring devices in my area for free through applications and organizations, knowing that my area is devoid of air pollution coverage? --- ## [Getting Map error](https://community.purpleair.com/t/getting-map-error/22317)
**Author:** [@fjk6515](https://community.purpleair.com/u/fjk6515)\ **Replies:** 0\ **Last updated:** [September 3, 2025, 5:53pm UTC](https://community.purpleair.com/t/getting-map-error/22317 "2025-09-03T17:53:18Z")
I am suddenly getting this error screen. --- ## [Station stuck on 503 error: 'The server is loading data and you should try again in 10 seconds.'](https://community.purpleair.com/t/station-stuck-on-503-error-the-server-is-loading-data-and-you-should-try-again-in-10-seconds/22011)
**Author:** [@Wiley\_Sanders](https://community.purpleair.com/u/Wiley_Sanders)\ **Replies:** 0\ **Last updated:** [August 3, 2025, 6:29pm UTC](https://community.purpleair.com/t/station-stuck-on-503-error-the-server-is-loading-data-and-you-should-try-again-in-10-seconds/22011 "2025-08-03T18:29:09Z")
Some station in my area but not all are stuck returning a 503 with the text: “The server is loading data and you should try again in 10 seconds.” The stations are showing up OK on the map. Any ideas what this is? --- ## [Best Outdoor Air Quality Monitor, Expert Picks](https://community.purpleair.com/t/best-outdoor-air-quality-monitor-expert-picks/21920)
**Author:** [@Fariha321](https://community.purpleair.com/u/Fariha321)\ **Replies:** 0\ **Last updated:** [July 27, 2025, 4:06am UTC](https://community.purpleair.com/t/best-outdoor-air-quality-monitor-expert-picks/21920 "2025-07-27T04:06:47Z")
I researched about the best outdoor air quality monitor for the past few days because I want to keep track of air pollution levels around my home, especially with wildfire smoke and traffic pollution in my area. I read r… --- ## [Pas de wifi](https://community.purpleair.com/t/pas-de-wifi/21874)
**Author:** [@abdoulaye\_sow](https://community.purpleair.com/u/abdoulaye_sow)\ **Replies:** 3\ **Last updated:** [July 25, 2025, 11:08am UTC](https://community.purpleair.com/t/pas-de-wifi/21874 "2025-07-25T11:08:44Z")
Bonjour, j’ai un nouveau capteur, Mais une fois le capteur allumé j’ai du mal trouver son wifi --- ## [How to get started](https://community.purpleair.com/t/how-to-get-started/21872)
**Author:** [@MariaA](https://community.purpleair.com/u/MariaA)\ **Replies:** 1\ **Last updated:** [July 24, 2025, 8:11pm UTC](https://community.purpleair.com/t/how-to-get-started/21872 "2025-07-24T20:11:57Z")
I am brand new to this community. Concerned because I live right near Hwy 80. How do I even get started? What kind of basic/starter monitor do I need? Thanks. --- ## [Programmable wifi board with adc inputs?](https://community.purpleair.com/t/programmable-wifi-board-with-adc-inputs/14922)
**Author:** [@CJLippert](https://community.purpleair.com/u/CJLippert)\ **Replies:** 1\ **Last updated:** [July 1, 2025, 6:39pm UTC](https://community.purpleair.com/t/programmable-wifi-board-with-adc-inputs/14922 "2025-07-01T18:39:24Z")
Where is PurpleAir sourcing their programmable wifi board with adc inputs. We had a lightning strike nearby and we think the board may have fried. The BME280 is Bosch Sensortec. The PMS-5003 is Plantower. But what ab… --- ## [Indoor/outdoor sensors](https://community.purpleair.com/t/indoor-outdoor-sensors/13706)
**Author:** [@lauramyers](https://community.purpleair.com/u/lauramyers)\ **Replies:** 3\ **Last updated:** [June 20, 2025, 3:36pm UTC](https://community.purpleair.com/t/indoor-outdoor-sensors/13706 "2025-06-20T15:36:34Z")
Hello - I’m trying to identify indoor vs outdoor sensors in PA data. I think it’s location\_type but not clear which category is which? I didn’t see this info posted previously and appreciate the help. Best Laura --- ## [Suggestion: hide all sensors from public map with location rating of zero](https://community.purpleair.com/t/suggestion-hide-all-sensors-from-public-map-with-location-rating-of-zero/11514)
**Author:** [@alecgargett](https://community.purpleair.com/u/alecgargett)\ **Replies:** 3\ **Last updated:** [June 9, 2025, 9:10pm UTC](https://community.purpleair.com/t/suggestion-hide-all-sensors-from-public-map-with-location-rating-of-zero/11514 "2025-06-09T21:10:59Z")
Hi. I noticed that a couple of PurpleAir monitors in my city had unusually clean air compared to all of the others, so I checked the location rating and it was zero. Does this mean they could be literally anywhere? In a… [Next page](https://community.purpleair.com/c/uncategorized/1.md?page=1)