Delhi Pollution Alert: GRAP 4 Returns as AQI Crosses 440

Delhi Pollution Worsens as GRAP 4 Is Re-Imposed Across NCR : 10 Key Do’s and Don’ts Explained

Delhi’s air pollution crisis intensified again on Saturday as authorities enforced GRAP 4 across the National Capital Region.
The decision came after the Air Quality Index (AQI) touched 431 at 4 pm and climbed to 441 by 6 pm.
Officials warned that the situation showed a worsening trend with severe health risks.

Consequently, the Commission for Air Quality Management (CAQM) activated Stage-IV of the Graded Response Action Plan.
This stage applies when air quality reaches the “Severe+” category. The restrictions took effect immediately across Delhi and the wider NCR.

In a formal statement, the CAQM sub-committee cited persistent pollution indicators. It stressed the need for urgent steps to prevent further deterioration. Authorities also noted unfavourable weather conditions worsening pollutant concentration. Vehicle emissions, paddy-straw burning, and local sources remain major contributors. Moreover, winter conditions continue to trap pollutants near ground levels. As a result, residents now face tighter controls and daily life disruptions.

Also Read : AAP Highlights Delhi Pollution Crisis Under BJP, Social Panic

What Is GRAP 4 and Why It Matters

GRAP 4 represents the strictest emergency response under India’s pollution control framework. It aims to reduce emissions immediately during extreme pollution episodes. Unlike earlier stages, GRAP 4 directly impacts transport, construction, offices, and schools. Earlier on Saturday, authorities had imposed GRAP 3 after AQI crossed 400.
However, the rapid spike forced officials to escalate measures within hours. This shift highlights how quickly Delhi’s air quality can collapse.

Health experts warn that prolonged exposure can trigger respiratory and cardiac problems. Children, the elderly, and outdoor workers face the highest risk. Therefore, compliance with restrictions becomes critical during this phase.

GRAP 4 Enforced in Delhi: 10 Key Do’s and Don’ts

Authorities have listed strict measures residents and institutions must follow immediately. These steps aim to cut emissions and limit outdoor exposure.

1. Truck entry into Delhi is banned, except vehicles carrying essential commodities or services.
2. LNG, CNG, electric, and BS-VI diesel trucks may enter Delhi without restrictions.
3. Light Commercial Vehicles registered outside Delhi are barred, except EVs, CNG, or BS-VI diesel vehicles.
4. Delhi-registered BS-IV and older diesel MGVs and HGVs are banned, except essential services.
5. All construction and demolition activities are prohibited, including linear public infrastructure projects.
6. Physical classes for Classes VI–IX and XI may shift to online mode, subject to state decisions.
7. Public and private offices may operate at 50 percent strength, with remaining staff working from home.
8. Central government offices may allow work from home, pending official approval.
9. State governments may close colleges and educational institutions as an emergency step.
10. Non-essential commercial activities may shut, and authorities may enforce odd-even vehicle rules.

Officials urged citizens to avoid non-essential travel and outdoor activities. Moreover, people were advised to follow health advisories strictly.

Agencies on High Alert as Pollution Risks Persist

The CAQM directed pollution control boards to intensify enforcement immediately. Monitoring teams have been asked to ensure strict compliance across NCR districts. Additionally, civic agencies must report daily action taken under GRAP 4.

Authorities acknowledged that pollution sources remain active despite restrictions. Farm fires, vehicular density, and festive emissions continue to add pressure. Therefore, officials warned that measures may extend if AQI remains critical.

Environmental experts stress the need for long-term solutions beyond emergency steps. They point to cleaner transport, stricter industrial norms, and regional coordination. However, for now, emergency compliance remains the priority.

What Residents Should Do to Stay Safe

Health authorities recommend staying indoors as much as possible. People should use masks and air purifiers where available. Moreover, those with existing illnesses should seek medical advice promptly.

Parents are advised to limit children’s outdoor exposure. Employers are encouraged to support remote work options.
These precautions can reduce immediate health risks during the crisis.