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What is Air Quality Index (AQI)
- Comparing air quality conditions at different locations/cities.
- It also helps in identifying faulty standards and inadequate monitoring programmes.
- AQI helps in analysing the change in air quality (improvement or degradation).
- AQI informs the public about environmental conditions. It is especially useful for people suffering from illnesses aggravated or caused by air pollution.
Latest Updates on Air Quality Index
In the National Capital Region (NCR), cold wave and fog conditions persisted, with the minimum temperature dropping to 8.4 degrees Celsius
The stringent measures under the stage-IV of the Grap in Delhi were lifted on Tuesday, following an improvement in the AQI
Stage IV curbs under the Graded Response Action Plan (GRAP) ?include a ban on all construction activities, entry of non-essential polluting trucks into Delhi, and mandatory shifting of school classes
AQI hits 401 despite light rainfall; cold wave grips north India with plummeting temperatures and snowfall disruptions
While the first half of December saw six 'moderate' air quality days, November remained highly polluted
While the air remains hazardous in the national capital, it shows slight improvement compared to Saturday, when many areas of the city reported an alarming AQI of 434
According to the Graded Response Action Plan (GRAP), the capital's air quality currently falls under Stage III (Severe), which is characterised by AQI values between 401 and 450
Despite the enforcement of Stage-IV measures under the Graded Response Action Plan (Grap), pollution levels show little respite
Delhi cold wave: Delhi recorded a minimum temperature of 7 degrees Celsius on Thursday morning; AQI was recorded at 448 on Thursday
The city is currently under Grap Stage-IV, which bans all construction work within city limits and prohibits the entry of unnecessary polluting trucks inside the capital
The air quality is expected to remain in the severe range on Thursday
In compliance with the restrictions of GRAP 4, instructions were given to conduct classes in hybrid mode in all schools except classes 10th and 12th
The air quality in Delhi deteriorates to 'severe plus'; strict measures under Grap Stage IV enforced to curb pollution
GRAP-3 has again been implemented in Delhi NCR by the Commission for Air Quality Management (CAQM). Up till Class V, all Delhi-NCR schools will be now be conducted in hybrid mode
The CAQM reimposes Grap-III in Delhi-NCR as AQI hits 355. Construction halted and diesel trucks banned; SC calls for pan-India air pollution action plan
Delhi cold wave: The IMD predicts that the cold wave may strengthen in the coming days, with shallow fog expected across various parts of Delhi-NCR
This sharp decline in air quality is attributed to low wind speeds, vehicle emissions, falling temperatures, and stubble burning
Cold wave provides no relief as homeless in Delhi seek shelter and warmth; AQI remains in the 'poor' category
According to the revised plan, inter-state buses from NCR states, except those EVs and those running CNG or BS-VI diesel, will not be allowed to enter Delhi
Cold wave eases in Delhi after temperatures dropped to 4 degrees Celsius on Thursday, moderate to poor AQI in city