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CO (42101) data for 2021
Contains CO (42101) data throughout the U.S. for the year 2021 -
SO2 (42401) data for 2021
Contains SO2 (42401) data throughout the U.S. for the year 2021 -
Ozone (44201) data for 2021
Contains Ozone (44201) data throughout the U.S. for the year 2021 -
NO2 (42602) data for 2022
Contains NO2 (42602) data throughout the U.S. for the year 2022 -
CO (42101) data for 2022
Contains CO (42101) data throughout the U.S. for the year 2022 -
SO2 (42401) data for 2022
Contains SO2 (42401) data throughout the U.S. for the year 2022 -
Ozone (44201) data for 2022
Contains Ozone (44201) data throughout the U.S. for the year 2022 -
NO2 (42602) data for 2023
Contains NO2 (42602) data throughout the U.S. for the year 2023 -
CO (42101) data for 2023
Contains CO (42101) data throughout the U.S. for the year 2023 -
SO2 (42401) data for 2023
Contains SO2 (42401) data throughout the U.S. for the year 2023 -
Ozone (44201) data for 2023
Contains Ozone (44201) data throughout the U.S. for the year 2023 -
NO2 (42602) data for 2024
Contains NO2 (42602) data throughout the U.S. for the year 2024 -
CO (42101) data for 2024
Contains CO (42101) data throughout the U.S. for the year 2024 -
SO2 (42401) data for 2024
Contains SO2 (42401) data throughout the U.S. for the year 2024 -
Ozone (44201) data for 2024
Contains Ozone (44201) data throughout the U.S. for the year 2024 -
State and County Codes
State and Country Codes for the EPA-AQS dataset -
Parameter Codes
Parameter Codes for the EPA-AQS dataset -
Method Codes
Method Codes for the EPA-AQS dataset