Original Paper

Natural Hazards

, Volume 61, Issue 2, pp 521-531

First online:

Statistical evaluation of PM10 and distribution of PM1, PM2.5, and PM10 in ambient air due to extreme fireworks episodes (Deepawali festivals) in megacity Delhi

  • S. TiwariAffiliated withIndian Institute of Tropical Meteorology Email author 
  • , D. M. ChateAffiliated withIndian Institute of Tropical Meteorology
  • , M. K. SrivastavaAffiliated withDepartment of Geophysics, Banaras Hindu University
  • , P. D. SafaiAffiliated withIndian Institute of Tropical Meteorology
  • , A. K. SrivastavaAffiliated withIndian Institute of Tropical Meteorology
  • , D. S. BishtAffiliated withIndian Institute of Tropical Meteorology
  • , B. PadmanabhamurtyAffiliated with

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Temporal variation of PM10 using 2-year data (January, 2007–December, 2008) of Delhi is presented. PM10 varied from 42 to 200 μg m−3 over January to December, with an average 114.1 ± 81.1 μg m−3. They are comparable with the data collected by Central Pollution Control Board (National Agency which monitors data over the entire country in India) and are lower than National Ambient Air Quality (NAAQ) standard during monsoon, close to NAAQ during summer but higher in winter. Among CO, NO2, SO2, rainfall, temperature, and wind speed, PM10 shows good correlation with CO. Also, PM10, PM2.5, and PM1 levels on Deepawali days when fireworks were displayed are presented. In these festive days, PM10, PM2.5, and PM1 levels were 723, 588, and 536 μg m−3 in 2007 and 501, 389, and 346 μg m−3 in 2008. PM10, PM2.5, and PM1 levels in 2008 were 1.5 times lower than those in 2007 probably due to higher mixing height (446 m), temperature (23.8°C), and winds (0.36 ms−1).


Hazardous particles Fireworks Mixing height Air quality Vehicular pollution