Exit Time Series
Only up to 5 sensors can be graphed. Remove one before adding another.
(ug/m3)

That air you're breathing, where's it been?

AirTracker makes visual connections between the air you are breathing and the locations of air pollution sources in your city. Users can view source areas, which show where air comes from at any time.

Key interactive features include:

  • View real-time air pollution and wind measurements across your city. Click on a blue circle, indicating an available city. Once the region has loaded, click on a circle to see these sensor measurements.

  • Click anywhere in the dotted region of the city to create a source area that "looks upwind" to see where the air came from to end up at that location, at that time.

  • When examining a city, explore past air pollution measurements and source areas that may influence air quality in a neighborhood. Choose a day on the timeline and click the clock in the lower left to explore data within that day.
Source Area:
PM2.5:
Click on the nearest sensor to see pollution measurements.
Wind:
Click on the nearest sensor (with an arrow) to see wind measurements.
Coming from

Legend

Date:
Source Area:
Less Likely More Likely
AirNow PM2.5:
(ug/m3)
0+ 12+ 35+ 55+ 150+
PurpleAir PM2.5:
(ug/m3)
0+ 12+ 35+ 55+ 150+
Clarity PM2.5:
(ug/m3)
0+ 12+ 35+ 55+ 150+
Smell Reports:
TRAX PM2.5:
(ug/m3)
Wind:
Industrial
Facilities:
Clicking on the map will show you the source area for that location at the selected time.

The visible area reveals the most likely origin of the air at your selected location.

The air in the grey area is most likely not reaching your selected location.

Wind:

The wind arrow points in the direction that the air is blowing. While the weather models that Air Tracker uses are quite reliable, they are not always perfect. Here is what to look for:




In the above examples when the wind arrow overlaps with the source area, we have a lot of confidence that the source area is correct.

And then in this different set of examples below, when the wind arrow and source area don't match, we have less confidence that the source area is correct.




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Select a year to explore:

Contact

Have any questions? Would you like to see Air Tracker in your neighborhood? Let us know at AirTracker@edf.org

Learn More

Read more about our methodology.

Source Area Settings

Show contribution likelihoods:
Show detailed uncertainty info:

AIR TRACKER TERMS OF USE

EDF's mission is to link science, economics, law, and innovative private-sector partnerships to create transformational solutions to the most serious environmental problems. Air Tracker is designed to provide people and communities with general available information about air quality in their area by presenting data from a number of public resources in a common interface.

These Terms of Use (the "Terms") are by and between the Environmental Defense Fund, Inc, a New York nonprofit corporation ("EDF") and, you, the individual or entity accessing the Air Tracker application and data. By accessing and using Air Tracker, you acknowledge and agreed that, as of the date you first access Air Tracker, you have read, understand and accept these terms. These terms may change from time to time, so your continued access to and use of Air Tracker means you consent to those changes.

Air Tracker is made available strictly for general informational, non-commercial purposes only. Air Tracker data should not be taken as professional, legal or health related advice nor be relied upon as a source of information for any legal or regulatory action or health related decisions. You may use the information available on Air Tracker to inform yourself.

For example, you are permitted to:

Air Tracker are provided at no charge. Air Tracker data is made available to you without any need to register or for us to collect Personal Data online from users. The limited permissions to access and use Air Tracker are nonexclusive and may be changed or revoked at any time. Any use of the Services other than as specifically authorized herein is strictly prohibited, will terminate your permission to use Air Tracker and may result in liability to you.

TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, AIR TRACKER (INCLUDING, WITHOUT LIMITATION, ANY AND ALL DATA, TEXT, GRAPHICS, IMAGES, PHOTOGRAPHS, ILLUSTRATIONS, AND INFORMATION OF ANY KIND, WHETHER EXPRESS, IMPLIED OR INFERRED) IS PROVIDED WITH NO REPRESENTATION OR WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE, AVAILABILITY, ACCESSIBILITY, ACCURACY, AND NONINFRINGEMENT. NEITHER EDF NOR ANY OF THE THIRD PARTY PUBLIC SOURCES OF THE AIR TRACKER DATA ARE LIABLE UNDER THIS AGREEMENT TO YOU OR ANYONE ELSE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, EVEN IF SUCH DAMAGES WERE POSSIBLE AND EVEN IF DIRECT DAMAGES ARE NOT A REMEDY. IN ANY EVENT, NO LIABILITY UNDER THESE TERMS WILL EXCEED MORE THAN FIVE HUNDRED DOLLARS (USD $500).

Air Tracker was developed using publicly available data from the following sources:

Air Tracker and all data offered through the application, including any text, graphics, images, photographs, videos, illustrations, information of any kind, and other content contained, implied or inferred therein were created by EDF, the data providers listed above, as well as other licensors and distributors and may be protected under US law(s). Except as explicitly stated in these terms, all rights in and to the data, application, and services are reserved by EDF, the public sources of the data, and any other licensors and distributors.

These Terms constitute the entire agreement between you and EDF with respect to your use of the EDF Air Tracker and that no joint venture, partnership, employment, agency or other relationship exists between you and EDF as a result of these terms or your use of the EDF Air Tracker. Our failure to exercise or enforce any right or provision of these terms does not constitute a waiver of such right or provision. If any provision of these terms is found by a court of competent jurisdiction to be invalid, the parties nevertheless agree that the court should endeavor to give effect to the parties' intentions as reflected in the provision, and the other provisions of the Terms remain in full force and effect.

IF YOU DISAGREE WITH ANY OF THESE TERMS, THEN YOU SHOULD NOT ACCESS AIR TRACKER AND YOU DO NOT HAVE PERMISSION TO USE ANY INFORMATION FROM AIR TRACKER.

If you have questions, send an email to AirTracker@edf.org

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