Description
Air quality data is collected from the Allegheny County Health Department monitors throughout the county. This data must be verified by qualified individuals before it can be considered official. The following data is unverified. This means that any electrical disruption or equipment malfunction can report erroneous monitored data.
For more information about the Health Department's Air Quality Program or to view a live version of the dashboard, please visit the ACHD website: https://alleghenycounty.us/Health-Department/Programs/Air-Quality/Air-Quality.aspx
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Air Quality Daily Summary | This links to a PDF file on the Allegheny County Health Department's web site. | Open resource | |
| Air Quality Dashboard | HTML | Recent hourly and daily readings for fine particulate matter, ozone, and sulfur dioxide are visualized in the dashboard hosted on the ACHD website. To view the interactive dashboard and learn more about the Health Department's Air Quality Program, please visit their website at the link above. | Open resource |
| 2019 Air Quality Monitoring Plan | This plan from Allegheny County Health Department provides a lot of context and metadata for the data provided on the WPRDC. | Open resource | |
| [old format] Air Quality Daily Summary (historical) | Text | Human-readable summary of air quality data. | Open resource |
| Sensor Locations (GeoJSON) | GeoJSON | Open resource | |
| [old format] Hourly Air Quality Data (historical archive) | CSV | Air-quality measurements by hour. ** ISSUES WITH THIS DATA: The Hourly and Daily Air Quality Data tables in this dataset were updated to support a previously missing measurement (see the field "black_carbon") which is measured at the Parkway East site. These tables have data for black carbon from 2020-04-24 through the present, but not for prior dates. Also: 1) The new "Pittsburgh" measurement site is missing measurements as the new measurements have not been added to the table yet. 2) The barometric pressure reading at the Lawrenceville site was last reported in the "BP" field on 2020-12-16 at 9am. It switched to a new field ("BP2"), but this has not been added to the table yet.** Old Data Notes for this data: The Lawrenceville station reports SO2 measurements in parts per billion (ppb), while all other stations report SO2 measurements in parts per million (ppm). Similarly, the units for CO and NO2 measurements vary from station to station and may change over time. In particular, Flag Plaza measured CO in ppm until 6/21/2019, when a new monitor measuring CO in ppb was installed (Lawrenceville, Parkway East, and Parkway East (Near Road) measure CO in ppb). Harrison Township measures NO2 in ppm, while Parkway East measures NO2 in ppb. As of 2019-05-01, the records in the Hourly Air Quality Data and Daily Air Quality Data have been modified to standardize these units across all stations for each measurement, using the EPA standard (CO: ppm, SO2: ppm, NO*: ppb). | Open resource |
| Daily AQI Data | CSV | Open resource | |
| [old format] Daily Air Quality Data (historical archive) | CSV | Air-quality measurements aggregated by day. ** ISSUES WITH THIS DATA: The Hourly and Daily Air Quality Data tables in this dataset were updated to support a previously missing measurement (see the field "black_carbon") which is measured at the Parkway East site. These tables have data for black carbon from 2020-04-24 through the present, but not for prior dates. Also: 1) The new "Pittsburgh" measurement site is missing measurements as the new measurements have not been added to the table yet. 2) The barometric pressure reading at the Lawrenceville site was last reported in the "BP" field on 2020-12-16. It switched to a new field ("BP2"), but this has not been added to the table yet.** Old Data Notes for this data: The Lawrenceville station reports SO2 measurements in parts per billion (ppb), while all other stations report SO2 measurements in parts per million (ppm). Similarly, the units for CO and NO2 measurements vary from station to station and may change over time. In particular, Flag Plaza measured CO in ppm until 6/21/2019, when a new monitor measuring CO in ppb was installed (Lawrenceville, Parkway East, and Parkway East (Near Road) measure CO in ppb). Harrison Township measures NO2 in ppm, while Parkway East measures NO2 in ppb. As of 2019-05-01, the records in the Hourly Air Quality Data and Daily Air Quality Data have been modified to standardize these units across all stations for each measurement, using the EPA standard (CO: ppm, SO2: ppm, NO*: ppb). | Open resource |
| Sensor Locations | CSV | Open resource | |
| Hourly Air Quality Data | CSV | Since this is a large table, if you wish to download and use a subset of this data, try clicking the "Add Filter" link below, selecting a field to filter on (we recommend "site" or "parameter"), and selecting a value for that field. Once the table is filtered down to that subset of the data, you can click the "Download" button above the table and choose your preferred format. | Open resource |
| Air Quality List of Acronyms and Flag Definitions | HTML | air-quality-docs.html | Open resource |
| Air Quality Index | HTML | Human-readable Air Quality Index for past hour (previously pointed to http://www.achd.net/airqual/AQIReport.XLS) | Open resource |
| Verified Air Quality Reports | HTML | Monitored-Data.aspx | Open resource |