Introduction
Air quality standards are limits set for pollutant concentrations to protect health and the environment. In India, the Central Pollution Control Board (CPCB) defines permissible limits under the National Ambient Air Quality Standards (NAAQS). Globally, the World Health Organization (WHO) and US EPA set guidelines that influence policies worldwide.
These standards provide a legal and scientific basis for controlling pollution, enforcing compliance, and informing the public. They also encourage cross-border cooperation since air pollution often travels beyond national boundaries.
Advantages
– Public protection: Reduces exposure to harmful pollutants.
– Uniform benchmarks: Ensures consistency in air quality assessment.
– Policy foundation: Guides environmental regulations and enforcement.
– Global alignment: Encourages international environmental efforts.
Disadvantages
– Enforcement challenges: Lack of resources or political will can weaken implementation.
– Variation across countries: Different standards can cause confusion.
– Slow updates: Standards may not keep pace with new scientific findings.
Uses in Environment & Daily Life
– Legal framework for emission control.
– Public AQI reports based on set standards.
– Environmental planning in cities.
– Basis for global environmental treaties.