On April 28, 2005, the California Air Resources Board (ARB) approved the nation's most protective ozone standard with special consideration for children's health. Based on air monitoring data, the AVAQMD is designated nonattainment for the new ozone standard.
An ARB-maintained website containing designation maps of California for all criteria pollutants that are designated for the State and National standards is available here. These maps show attainment status for all air districts in California and are updated annually for the state area Designations as required by the Health and Safety Code (H&SC) section 39608. The Board makes State area designations for ten criteria pollutants: ozone, suspended particulate matter (PM10), fine suspended particulate matter (PM2.5), carbon monoxide, nitrogen dioxide, sulfur dioxide, sulfates, lead, hydrogen sulfide and visibility reducing particles.
This table lists the air quality attainment status for criteria pollutants in the AVAQMD. The AVAQMD California Environmental Quality Act (CEQA) and Federal Conformity Guidelines document is available here.