Toxic smog persists over India's north, schools reopen in Pakistan
Emergency declared
The government seems powerless to protect its citizens from this annual crisis, let alone prevent it.
Residents in India's northern states woke up to another day of poor air quality on Tuesday, as a layer of dense fog shrouded most of the region and pollution in the capital Delhi remained severe.
India battles air pollution every winter as cold, heavy air traps dust, emissions, and smoke from farm fires started illegally in the farming states of Punjab and Haryana.
The air quality index (AQI) touched a peak of 491 in Delhi on Monday, forcing the government to restrict vehicle movement and construction activities, and urge schools to conduct classes online.
In contrast, air quality improved in the Punjab province of neighbouring Pakistan, prompting authorities in the worst-affected Lahore and Multan cities to reopen schools from Wednesday, after more than a week of being closed due to hazardous pollution levels.
Students would have to wear face masks and there would be a complete ban on outdoor sports, a government order said on Tuesday.
Lahore's air quality index (AQI) fell to 158 late on Tuesday, which Swedish group AQair categorises as unhealthy, after crossing 2 000 in some locations last week.
Bad readings
On Tuesday, Delhi's 24-hour air quality index reading was at 488 on a scale of 500, India's Central Pollution Control Board (CPCB) said, and at least five stations in the capital reported an AQI of 500.
CPCB defines an AQI reading of 0-50 as "good" and above 401 as "severe", which it says is a risk to healthy people and "seriously impacts" those with existing diseases.
Swiss group IQAir ranked New Delhi as the world's most polluted city with air quality at a "hazardous" 489, although that was a significant improvement from Monday's 1 081 reading.
No visibility
Experts say the scores vary because of a difference in the scale countries adopt to convert pollutant concentrations into AQI, and so the same quantity of a specific pollutant may be translated as different AQI scores in different countries.
India's weather department said a shift in the fog layer towards the northern state of Uttar Pradesh had helped improve visibility over Delhi.
Visibility dropped to zero metres in Uttar Pradesh's Agra, which lies southeast of Delhi. The Taj Mahal, India's famed monument of love, has been obscured by toxic smog for nearly a week.
The strict measures to mitigate the impact of high pollution have hurt production at more than 3.4 million micro, small and medium enterprises in the nearby states of Punjab, Haryana and Delhi, local media reported.
India battles air pollution every winter as cold, heavy air traps dust, emissions, and smoke from farm fires started illegally in the farming states of Punjab and Haryana.
The air quality index (AQI) touched a peak of 491 in Delhi on Monday, forcing the government to restrict vehicle movement and construction activities, and urge schools to conduct classes online.
In contrast, air quality improved in the Punjab province of neighbouring Pakistan, prompting authorities in the worst-affected Lahore and Multan cities to reopen schools from Wednesday, after more than a week of being closed due to hazardous pollution levels.
Students would have to wear face masks and there would be a complete ban on outdoor sports, a government order said on Tuesday.
Lahore's air quality index (AQI) fell to 158 late on Tuesday, which Swedish group AQair categorises as unhealthy, after crossing 2 000 in some locations last week.
Bad readings
On Tuesday, Delhi's 24-hour air quality index reading was at 488 on a scale of 500, India's Central Pollution Control Board (CPCB) said, and at least five stations in the capital reported an AQI of 500.
CPCB defines an AQI reading of 0-50 as "good" and above 401 as "severe", which it says is a risk to healthy people and "seriously impacts" those with existing diseases.
Swiss group IQAir ranked New Delhi as the world's most polluted city with air quality at a "hazardous" 489, although that was a significant improvement from Monday's 1 081 reading.
No visibility
Experts say the scores vary because of a difference in the scale countries adopt to convert pollutant concentrations into AQI, and so the same quantity of a specific pollutant may be translated as different AQI scores in different countries.
India's weather department said a shift in the fog layer towards the northern state of Uttar Pradesh had helped improve visibility over Delhi.
Visibility dropped to zero metres in Uttar Pradesh's Agra, which lies southeast of Delhi. The Taj Mahal, India's famed monument of love, has been obscured by toxic smog for nearly a week.
The strict measures to mitigate the impact of high pollution have hurt production at more than 3.4 million micro, small and medium enterprises in the nearby states of Punjab, Haryana and Delhi, local media reported.
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