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8-hour daily maximum ozone concentrations as measured by the Clean Air Status and Trends Network (CASTNET)
Search relevance: 146.83 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Air Trends provides geographic trend information for specific air pollutants. There are links to two types of summaries provided on this page - air quality trends and air quality design values....
Search relevance: 129.56 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
The CASTNET Download Data module allows users to select, view, and download CASTNET data (Raw, Aggregate, Modeled & Factual Data) based on user selections. CASTNET sites are located in or near...
Search relevance: 129.49 | Views last month: 9 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
The Air Emissions Trends site provides national trends of criteria pollutant and precursor emissions data based on the the National Emissions Inventory (NEI) from 1970 - the latest NEI year.
Search relevance: 127.52 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Hourly temperature data and other meteorological data (e.g., relative humidity, solar radiation, precipitation, wind direction) are provided at long-term rural air monitoring sites. There are more...
Search relevance: 126.85 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 07:00 PM -
The Country Trends in Major Air Pollutants data set is a framework of public-health-focused air quality indicators that quantifies over 200 countries' trends in exposure to Particulate Matter...
Search relevance: 122.89 | Views last month: 0 | Catalog Last Checked: August 04, 2025 at 02:31 AM -
Annual air trends report in the form of an interactive web application. The report features a suite of visualization tools that allow the user to: -Learn about air pollution and how it can affect...
Search relevance: 118.21 | Views last month: 11 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Files containing daily average NO, NO2, CO, and EC concentrations simulated by WRF/CMAQ at 36 km resolution for the time period 1990 – 2010. These data were contributed by EPA/ORD/CEMM/AESMD...
Search relevance: 115.02 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:57 PM -
Weekly average air concentrations from CASTNET filter pack data in standard Tuesday 9:00 AM - Tuesday 8:00 AM weeks. The data are collected using an open face, 3-stage filter pack. Data include...
Search relevance: 105.25 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 06:56 PM -
Surface water browning, the result of increasing concentrations of dissolved organic matter (DOM), has been widespread in northern ecosystems in recent decades. Here, we assess a database of 426...
Search relevance: 102.98 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:58 PM -
Ground-level ozone is measured at CASTNET sites following the guidelines in 40 Code of Federal Regulations (CFR) Parts 50 and 58. Continuous measurements are averaged to hourly concentrations....
Search relevance: 102.01 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:57 PM -
Nephelometer data (conforms to IMPROVE network standards) from October 1993 to June 2002. This table is no longer updated.
Search relevance: 101.39 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
This data release presents baseline datasets of phreatophytic groundwater-dependent ecosystem (GDE) locations in Oregon and trends in physical and environmental factors potentially influencing...
Search relevance: 87.78 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:08 PM -
The dataset represents the data depicted in the Figures and Tables of a Journal Manuscript with the following abstract: "The objective of this study is to determine the adequacy of using a...
Search relevance: 79.95 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 06:52 PM -
To better understand the current air quality status in the District, the following summary highlights key pollutants and their compliance with the National Ambient Air Quality Standards (NAAQS)....
Search relevance: 76.45 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 07:07 PM -
The AirData Air Quality Monitors app is a mapping application available on the web and on mobile devices that displays monitor locations and monitor-specific information. It also allows the...
Search relevance: 63.83 | Views last month: 7 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Data sets used in the analysis presented in the manuscript “A Measurement-Model Fusion Approach for Improved Wet Deposition Maps and Trends”. The datasets used for the analysis presented in this...
Search relevance: 62.09 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:55 PM -
The US EPA developed a set of modeled meteorology, emissions, air quality and pollutant deposition spanning the years 2002 through 2019. Modeled datasets cover the Conterminous US (CONUS) at a...
Search relevance: 59.98 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 07:01 PM -
Compilation of U.S. air carrier statistics, including passenger counts, on-time performance, air fares, airline financials, and fuel consumption. This BTS data story provides essential insights...
Search relevance: 40.87 | Views last month: 24 | Catalog Last Checked: October 15, 2026 at 08:46 PM -
Deposition values for the continguous United States are developed from a measurement-model fusion approach that used data from the Community Multiscale Air Quality Model and the Clean Air Status...
Search relevance: 39.34 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:55 PM
