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Delhi Diwali Air: Vehicles Cause Daily PM2.5, Firecrackers Spike Levels
✍️ Times of India
🗓 09 Nov 2026, 11:48 AM
👁 18
Vehicle emissions drive Delhi's daily PM2.5 pollution, while firecrackers cause rapid spikes during Diwali, compounded by challenging weather conditions.
Delhi's air quality during the Diwali festival is shaped by two distinct sources of pollution: daily vehicle emissions and seasonal firecrackers. Throughout the year, vehicles are a significant contributor to the city's baseline levels of particulates, maintaining a steady load of pollutants in the atmosphere.
During the festive season, the introduction of firecrackers alters this dynamic. While vehicles provide a constant background level of pollution, fireworks cause rapid and sharp spikes in the concentration of harmful particles. This sudden increase creates a complex air quality scenario that is distinct from the city's usual daily patterns.
The combination of these two factors makes the Diwali period particularly challenging for air quality management. The rapid rise in particulate matter from fireworks, layered on top of existing vehicle emissions, intensifies the pollution burden.
Weather conditions further complicate the situation during this time. Challenging meteorological factors can trap these emissions near the ground, preventing them from dispersing easily. As a result, the interplay between steady vehicle pollution and sudden firework spikes leads to significantly degraded air quality in the capital during the festival.
During the festive season, the introduction of firecrackers alters this dynamic. While vehicles provide a constant background level of pollution, fireworks cause rapid and sharp spikes in the concentration of harmful particles. This sudden increase creates a complex air quality scenario that is distinct from the city's usual daily patterns.
The combination of these two factors makes the Diwali period particularly challenging for air quality management. The rapid rise in particulate matter from fireworks, layered on top of existing vehicle emissions, intensifies the pollution burden.
Weather conditions further complicate the situation during this time. Challenging meteorological factors can trap these emissions near the ground, preventing them from dispersing easily. As a result, the interplay between steady vehicle pollution and sudden firework spikes leads to significantly degraded air quality in the capital during the festival.