In 2021 WHO up-to-date the Global Air Good quality Tips, which advocate the utmost Protected level for PM2.five once-a-year regular concentration of five μg/m3 or less. The rules deliver proof in the harm air pollution inflicts on human well being, at even lower concentrations than Beforehand comprehended. The updated guidelines https://www.dailypioneer.com/2025/pioneer-exclusive/no-fuel--fines-soon-for-overage-vehicles-in-capital.html