How does NCR winter air-quality affect Magento delivery logistics + COD?

This is a genuinely NCR-specific operational concern that out-of-town devs miss. NCR’s November, February air-quality crisis (PM2.5 levels routinely 400-800+ in Nov-Dec) causes two Magento-level operational issues that need product-level handling. (1) Delivery disruption. The Commission for Air Quality Management (CAQM) under GRAP (Graded Response Action Plan) periodically bans BS-IV diesel goods vehicles from entering NCR during peak smog episodes, if your last-mile is Shadowfax / Delhivery / Ecom Express on diesel fleets, expect 2-7 day delivery delays in late November / early December. We wire the Magento checkout to surface this proactively (delivery-delay banner per NCR PIN code during a GRAP Stage 3/4 event), letting customers re-pick a slot or change to a Hyperlocal Zomato/Swiggy Genie option. (2) COD impact. Cash-on-Delivery refusal rates spike in NCR winter (riders unwilling to extend delivery attempts in heavy smog with respiratory PPE shortages). We add a Magento checkout rule to surface UPI / Paytm / Pine Labs prepayment incentives (₹50 off, free shipping) during GRAP windows, preserving order conversion. Most NCR merchants ignore this until their reverse-logistics costs balloon.