Articles | Volume 24, issue 3
https://doi.org/10.5194/acp-24-1855-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-1855-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Feb 2024
Research article |
| 12 Feb 2024
| 12 Feb 2024
Revisiting day-of-week ozone patterns in an era of evolving US air quality
Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Christian Hogrefe
Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Andrew Whitehill
Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Kristen M. Foley
Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Jennifer Liljegren
Region 5, U.S. Environmental Protection Agency, Chicago, IL, USA
Norm Possiel
Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Benjamin Wells
Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Barron H. Henderson
Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Lukas C. Valin
Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Gail Tonnesen
Region 8, U.S. Environmental Protection Agency, Denver, CO, USA
K. Wyat Appel
Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
Shannon Koplitz
Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
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Total article views: 3,142 (including HTML, PDF, and XML)
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Cited
18 citations as recorded by crossref.
- Study on the characteristics of urban background ozone pollution based on long-term observations from mountain sites in China during 2015–2022 W. Zhao et al. https://doi.org/10.1016/j.atmosres.2024.107696
- Global patterns and trends in ground-level ozone chemical formation regimes from 1996 to 2022 Y. Tian et al. https://doi.org/10.5194/acp-25-9127-2025
- A Multi-Agglomeration Assessment of Air Quality Responses to Top-Down NOx Emission Changes: Insights from Trends in Surface NO2 and O3 Across Urban China (2014–2021) Y. Shen et al. https://doi.org/10.3390/atmos17030313
- Assessment and spatial characterization of ground-level ozone exposure using a low-cost sensor network D. Gao et al. https://doi.org/10.1016/j.envpol.2026.128604
- Surface ozone trend variability across the United States and the impact of heat waves (1990–2023) K. Chang et al. https://doi.org/10.5194/acp-25-5101-2025
- On ozone's weekly cycle for different seasons in Arizona M. Greenslade et al. https://doi.org/10.1016/j.atmosenv.2024.120703
- Quantifying NOx Emission Sources in Houston, Texas Using Remote Sensing Aircraft Measurements and Source Apportionment Regression Models D. Goldberg et al. https://doi.org/10.1021/acsestair.4c00097
- A long-term (2001–2022) examination of surface ozone concentrations in Tucson, Arizona T. Ajayi et al. https://doi.org/10.1039/D5EA00072F
- Characterizing the near-road NOx gradient for exposure assessment purposes J. Levasseur et al. https://doi.org/10.1016/j.epm.2026.01.002
- Influence of the COVID-19 Pandemic on Air Quality in Taipei, Taiwan: Implication About a Transition to Electric Vehicles H. Tran et al. https://doi.org/10.1007/s44408-026-00100-x
- Design of Oil Mist and Volatile-Organic-Compound Treatment Equipment in the Manufacturing Plant C. Fu et al. https://doi.org/10.3390/pr12092050
- Compound heat and ozone pollution in the urban environment C. Wang et al. https://doi.org/10.1016/j.uclim.2025.102511
- Impacts of stratospheric intrusion on near-surface O3 variations in the Sichuan basin, Southwest China during the last 10 years L. Wu et al. https://doi.org/10.1016/j.atmosenv.2026.122156
- Comparative Impacts of Freight and Non-truck Traffic on NOx and Ozone Concentrations in the Los Angeles Basin A. Moore et al. https://doi.org/10.1021/acsestair.5c00396
- Explaining trends and changing seasonal cycles of surface ozone in North America and Europe over the 2000–2018 period: a global modelling study with NOx and VOC tagging T. Ansari et al. https://doi.org/10.5194/acp-25-16833-2025
- Characteristics of common ozone exceedance days across the U.S. Intermountain West N. Soltani et al. https://doi.org/10.1016/j.atmosenv.2026.121982
- Geostationary Satellite Observation-Informed Modeling of Ozone Dynamics along the U.S.–Mexico Border A. Mei et al. https://doi.org/10.1021/acsestair.6c00108
- Long-term trends and variability of ground-level ozone in Germany A. Minkos et al. https://doi.org/10.1016/j.apr.2026.103100
18 citations as recorded by crossref.
- Study on the characteristics of urban background ozone pollution based on long-term observations from mountain sites in China during 2015–2022 W. Zhao et al. https://doi.org/10.1016/j.atmosres.2024.107696
- Global patterns and trends in ground-level ozone chemical formation regimes from 1996 to 2022 Y. Tian et al. https://doi.org/10.5194/acp-25-9127-2025
- A Multi-Agglomeration Assessment of Air Quality Responses to Top-Down NOx Emission Changes: Insights from Trends in Surface NO2 and O3 Across Urban China (2014–2021) Y. Shen et al. https://doi.org/10.3390/atmos17030313
- Assessment and spatial characterization of ground-level ozone exposure using a low-cost sensor network D. Gao et al. https://doi.org/10.1016/j.envpol.2026.128604
- Surface ozone trend variability across the United States and the impact of heat waves (1990–2023) K. Chang et al. https://doi.org/10.5194/acp-25-5101-2025
- On ozone's weekly cycle for different seasons in Arizona M. Greenslade et al. https://doi.org/10.1016/j.atmosenv.2024.120703
- Quantifying NOx Emission Sources in Houston, Texas Using Remote Sensing Aircraft Measurements and Source Apportionment Regression Models D. Goldberg et al. https://doi.org/10.1021/acsestair.4c00097
- A long-term (2001–2022) examination of surface ozone concentrations in Tucson, Arizona T. Ajayi et al. https://doi.org/10.1039/D5EA00072F
- Characterizing the near-road NOx gradient for exposure assessment purposes J. Levasseur et al. https://doi.org/10.1016/j.epm.2026.01.002
- Influence of the COVID-19 Pandemic on Air Quality in Taipei, Taiwan: Implication About a Transition to Electric Vehicles H. Tran et al. https://doi.org/10.1007/s44408-026-00100-x
- Design of Oil Mist and Volatile-Organic-Compound Treatment Equipment in the Manufacturing Plant C. Fu et al. https://doi.org/10.3390/pr12092050
- Compound heat and ozone pollution in the urban environment C. Wang et al. https://doi.org/10.1016/j.uclim.2025.102511
- Impacts of stratospheric intrusion on near-surface O3 variations in the Sichuan basin, Southwest China during the last 10 years L. Wu et al. https://doi.org/10.1016/j.atmosenv.2026.122156
- Comparative Impacts of Freight and Non-truck Traffic on NOx and Ozone Concentrations in the Los Angeles Basin A. Moore et al. https://doi.org/10.1021/acsestair.5c00396
- Explaining trends and changing seasonal cycles of surface ozone in North America and Europe over the 2000–2018 period: a global modelling study with NOx and VOC tagging T. Ansari et al. https://doi.org/10.5194/acp-25-16833-2025
- Characteristics of common ozone exceedance days across the U.S. Intermountain West N. Soltani et al. https://doi.org/10.1016/j.atmosenv.2026.121982
- Geostationary Satellite Observation-Informed Modeling of Ozone Dynamics along the U.S.–Mexico Border A. Mei et al. https://doi.org/10.1021/acsestair.6c00108
- Long-term trends and variability of ground-level ozone in Germany A. Minkos et al. https://doi.org/10.1016/j.apr.2026.103100
Saved (final revised paper)
Latest update: 21 Jul 2026
Short summary
We assess observed and modeled ozone weekend–weekday differences in the USA from 2002–2019. A subset of urban areas that were NOx-saturated at the beginning of the period transitioned to NOx-limited conditions. Multiple rural areas of California were NOx-limited for the entire period but become less influenced by local day-of-week emission patterns in more recent years. The model produces more NOx-saturated conditions than the observations but captures trends in weekend–weekday ozone patterns.
We assess observed and modeled ozone weekend–weekday differences in the USA from 2002–2019. A...
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