Stage IV — 'Severe+' AQI > 450
Each stage also includes all measures of the lower stages.
🚫 Prohibited / restricted
- Entry of trucks (HGVs) into Delhi stopped #1
- Delhi-registered diesel BS-IV & below HGVs banned in Delhi #2
- C&D ban extended to linear public projects (highways, roads, flyovers, power, pipelines, telecom) #3
- Classes VI–IX and XI in hybrid mode (Delhi, Gurugram, Faridabad, Ghaziabad, GB Nagar) #4
- States may close colleges, non-emergency commercial activity, run odd-even #5
✅ Permitted / measures
- LNG / CNG / electric / BS-VI diesel trucks allowed to enter Delhi #1–2
🙋 What citizens should do
- Limit non-essential outdoor activity
- Children, pregnant women, elderly and chronically ill: stay indoors; wear a mask outdoors
- Follow school and other restrictions as instructed