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This layer shows the latest values for global air quality from ground-based monitoring stations compiled by OpenAQ and updated hourly. A brief summary of the item is not available. Add a brief summary about the item.

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Item created: Feb 6, 2020 Item updated: Feb 22, 2025 View count: 3,766,431

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Description

Every day activities such as driving, burning coal for electricity, wildfires, running factories, even cooking and cleaning, release particles into the air. Besides being an irritant, small particles of 10, 2.5, 1 micrometers (PM10, PM2.5, PM1) or less are a health hazard since they can get deep into the respiratory system and damage the delicate tissues.

The exposure of populations to high levels of small particles increases the risk of respiratory and cardiovascular illnesses. The World Health Organization (WHO) guidelines provide long-term and short-term exposure limits to PM10 and PM2.5:
  • Long-term: PM10 20 µg/m³ annual mean and PM2.5 10 µg/m³
  • Short-term: PM10 50 µg/m³ 24-hour mean and PM2.5 25 µg/m³
Exposure to PM10 and PM2.5 above these limits may significantly impact human health.

The OpenAQ Recent Conditions in Air Quality layers show the latest mass concentrations and particulate count for PM2.5, PM10, and PM1 of the stations in the OpenAQ data set with at least one value reported in the past 30 days.

Source: The source information is the OpenAQ community which reports measured concentrations (µg/m³) and particle matter count (particles/cm³) on a global scale by aggregating station data from national networks of air quality.

Update Frequency: It is updated every hour using the Aggregated Live Feed (ALF) methodology.

Area Covered: Global

Revisions
  • Jan 25, 2025: Upgrade to OpenAQ API version 3"
  • Jan 18, 2024: Update to feed routine that allows stations w/o an identifier.
  • Jun 23, 2023: Added new fields: Location ID, Station URL; Provider, and Instrument names. The live feed routine was updated to increase reliability and improve the overall update process.
  • Jul 21, 2022: Added service to Live Feed Status Page for active monitoring!
  • Feb 8, 2022: Update of live feed routine to use OpenAQ API v2:
    • Addition of PM10 and PM1 layers.
    • Values of particle matter count (particles/cm³) to all layers.
    • Update of field labels.
    • Removal of SourceName field.
  • Feb 5, 2020: Official release of Feature Service offering.
This layer is provided for informational purposes and is not monitored 24/7 for accuracy and currency.

If you would like to be alerted to potential issues or simply see when this Service will update next, please visit our Live Feed Status Page!

An in-depth description of the item is not available.

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This work is licensed under the Esri Master License Agreement.

No special restrictions or limitations on using the item's content have been provided.

Comments (36)

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cerimagick Item Owner commented 3 months ago Delete Reply

Good evening, Would it be possible to add measuring stations available on the openaq.org website but not in the layer? A similar issue appeared 10 months ago. I am particularly interested in Bosnia, Serbia, Montenegro, Kosovo and North Macedonia. Thank you

cerimagick Item Owner commented 3 months ago Delete

Thank you.

esri_livefeeds2 Item Owner commented 3 months ago Delete

Bosnia, Serbia, and Kosovo are current. Montenegro hasn't had an update since March and North Macedonia hasn't had an update since September.

esri_livefeeds2 Item Owner commented 3 months ago Delete

We'll check this out and see what is going on...thank you for alerting us!

KatyAppletonUEA_new Item Owner commented 4 months ago Delete Reply

Clicking on point locations bring up wrong data in the pop up. For example. I click on the two stations on the map between Leiden and Den Haag in Netherlands, and the details in the pop ups are for Mexico. Zacatecas in Mexico gives info for a station in the Maldives. The station in the Maldives shows info for Kazakhstan.

KatyAppletonUEA_new Item Owner commented 4 months ago Delete

(this happens in Edge but not Chrome)

cerimagick Item Owner commented a year ago Delete Reply

Would it be possible to add measuring stations that are available on the openaq.org website but not in the layer? Thank you

cerimagick Item Owner commented a year ago Delete

New stations are in. Thank you very much.

esri_livefeeds2 Item Owner commented a year ago Delete

We made some revisions to the feed routine. Picked up over 1,400 stations that were ignored because they do not have an ID. Counts are looking good across the globe for stations having a PM1, PM10, or PM25 value within the past 30 days. Take a look and let me know what you think.

cerimagick Item Owner commented a year ago Delete

Any chance of including available stations from the Western Balkans (Bosnia, Serbia, Montenegro, Kosovo, North Macedonia, Croatia, Romania, Bulgaria) soon? Thank you

esri_livefeeds2 Item Owner commented a year ago Delete

Narrowing this down, I can see that 58 stations have had data updates in the past 30 days.

esri_livefeeds2 Item Owner commented a year ago Delete

I can confirm that out of the 103 stations in Bosnia, we are only picking up 38. Investigating why!

esri_livefeeds2 Item Owner commented a year ago Delete

Our feed developer is reviewing the roadblocks now. We know that not all of the sensors include a location, but we don't have a count on that yet. I'll review the AOIs you mentioned and see if there are any hang-ups with them specifically.

cerimagick Item Owner commented a year ago Delete

I am particularly interested in Bosnia, Serbia, Montenegro, Kosovo, Croatia and North Macedonia. They are way more available on the website than in the layer. Tnx.

esri_livefeeds2 Item Owner commented a year ago Delete

Reviewing this now to see if/where we are missing stations. Thanks!

holly.torpey_LSA Item Owner commented 2 years ago Delete Reply

The description says that it includes PM2.5, PM10, and PM1 layers, but the Layers section of the item details currently lists three point layers called Air Quality - PM10, Air Quality - PM10, and Air Quality - PM1. Where is PM2.5?

holly.torpey_LSA Item Owner commented 2 years ago Delete

Thank you!

esri_livefeeds2 Item Owner commented 2 years ago Delete

Thank you for bringing this to our attention. The layers’ titles have been updated to accurately describe the data. These layers are (1) Air Quality – PM2.5, (2) Air Quality – PM10, and (3) Air Quality PM1.

siengisadmin Item Owner commented 3 years ago Delete Reply

Hi! It seems like the layer has not updated since June 15, 2022. Can you please take a look? Thanks!

esri_livefeeds2 Item Owner commented 3 years ago Delete

This service has been added to the Live Feed Status Page so it can be monitored.

esri_livefeeds2 Item Owner commented 3 years ago Delete

The obstruction has been cleared and the service should return to it's normal hourly update! Thank you for the heads up!

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          Data updated: Feb 22, 2025, 2:04 AM

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