 "What is Air Quality Index (AQI)")
Air Quality Index
What is Air Quality Index (AQI)
The air quality index (AQI) is an index for reporting air quality on a daily basis. It is a measure of how air pollution affects one's health within a short time period. The purpose of the AQI is to help people know how the local air quality impacts their health. The Environmental Protection Agency (EPA) calculates the AQI for five major air pollutants, for which national air quality standards have been established to safeguard public health.
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Latest Updates on Air Quality Index
Delhi AQI stays 'poor', temperatures above normal; mercury to cross 35°C
Overall AQI at 208 with 25 stations in 'poor' category; warm night and cloudy skies push minimum temperature well above normal across the capital
 "Delhi AQI stays 'poor', temperatures above normal; mercury to cross 35°C")
Delhi chokes on poor air as city records hottest early March in 50 yrs
AQI crossed 200 in Delhi after three days of 'moderate' air quality as IMD data showed the city recorded its hottest first week of March day in 50 years
 "Delhi chokes on poor air as city records hottest early March in 50 yrs")
Delhi AQI slips to 'poor' category as pollution levels rise again
Overall AQI climbs to 227 with most monitoring stations in poor category; Mundka records 'very poor' air quality despite clear skies and warm conditions
 "Delhi AQI slips to 'poor' category as pollution levels rise again")
Delhi AQI remains 'moderate' as surface winds keep pollution in check
Overall air quality index stands at 151 with most monitoring stations in moderate category; clear skies and warm conditions expected across the national capital
 "Delhi AQI remains 'moderate' as surface winds keep pollution in check")
Delhi air quality improves to 'moderate' aided by strong surface winds
Air quality stands at 135 in moderate category; strong surface winds and clear skies likely to aid further dispersal of pollutants across the national capital
 "Delhi air quality improves to 'moderate' aided by strong surface winds")
Delhi air quality improves to 'moderate' category, mercury may touch 34°C
Weather conditions in the capital are turning warmer. The India Meteorological Department (IMD) has forecast mainly clear skies with sustained surface winds of 15-25 kmph in Delhi
 "Delhi air quality improves to 'moderate' category, mercury may touch 34°C")
Delhi AQI slips to 'poor' levels; IMD predicts strong winds, rising mercury
Out of the 44 stations, 27 record 'poor' air quality while Punjabi Bagh turns severe at 368; IMD forecasts stronger surface winds that may help disperse pollutants and ease pollution levels
Delhi AQI improves to moderate; strong winds, rising mercury likely to help
Overall AQI in the national capital was 176, with 35 stations in the 'moderate' category; IMD forecasts strong surface winds and clear skies to further improve air quality
Delhi air quality remains in 'poor' category, mercury set to cross 30°C
Air quality in Delhi remained in the 'poor' category on Sunday as the mercury rose, with Delhi recording its hottest February day in three years on Saturday
 "Delhi air quality remains in 'poor' category, mercury set to cross 30°C")
Delhi AQI turns 'poor' again after brief respite while mercury keeps rising
Air quality in the national capital deteriorated again on Saturday while the maximum temperature continued to remain above 30 degrees Celsius- higher than the seasonal average
 "Delhi AQI turns 'poor' again after brief respite while mercury keeps rising")
Delhi AQI improves to 'moderate' levels; IMD predicts warmer days ahead
Majority of the city's monitoring stations report 'moderate' air, but some areas such as Anand Vihar remain polluted; temperatures likely to stay above normal with partly cloudy skies today
 "Delhi AQI improves to 'moderate' levels; IMD predicts warmer days ahead")
Delhi air quality improves slightly, remains in 'poor' levels; AQI at 203
Air quality shows marginal improvement across Delhi, with 21 stations in the poor category; IMD forecasts clear skies, rising temperatures and no rainfall over the next seven days
 "Delhi air quality improves slightly, remains in 'poor' levels; AQI at 203")
Delhi air quality remains in 'poor' category for fourth day; AQI at 237
Majority of monitoring stations in the city record 'poor' AQI levels as Anand Vihar remains worst hit at 342; maximum temperature likely to touch 31 degrees Celsius
 "Delhi air quality remains in 'poor' category for fourth day; AQI at 237")
Delhi's air quality worsens despite better weather; Anand Vihar AQI at 331
Monitoring stations like Anand Vihar and Wazirpur, record AQI above 300 even as clear skies and moderate winds prevail across the national capital
 "Delhi's air quality worsens despite better weather; Anand Vihar AQI at 331")
Delhi air quality remains 'poor' on Monday, mercury set to cross 30°C
The weather department's latest bulletin indicates that both minimum and maximum temperatures are likely to remain above normal in the coming days
Delhi air quality deteriorates on Sunday; mercury set to touch 30°C
Air quality in Delhi slips to 'very poor' levels on Sunday, while CAQM mandates stricter emission norms for industries across NCR. Mercury is set to touch 30 degrees Celsius
 "Delhi air quality deteriorates on Sunday; mercury set to touch 30°C")
Delhi AQI improves to 'moderate' as temperature continues to rise
Twenty monitoring stations in the 'poor' category and 18 in 'moderate'; CAQM issues fresh statutory direction to tighten dust control and C&D waste management across Delhi-NCR
Expanding green cover key to improving Delhi-NCR air quality: Supreme Court
The Supreme Court observed that expanding green cover is a sustainable, long-term measure to improve Delhi-NCR's air quality as it reconstituted an expert panel for afforestation efforts
 "Expanding green cover key to improving Delhi-NCR air quality: Supreme Court")
Delhi air quality worsens to 'poor' levels again despite rising mercury
Nineteen stations record poor air quality as overall AQI rises to 203; temperatures set to climb above normal and morning mist likely to persist over the coming week
Delhi AQI 'moderate'; GRAP stage-II curbs revoked as air quality improves
Light showers on Wednesday helped improve Delhi's air quality to moderate; CAQM lifts stage-II GRAP curbs as IMD forecasts AQI to stay in poor to moderate range over the next few days
 "Delhi AQI 'moderate'; GRAP stage-II curbs revoked as air quality improves")