When to wear a mask?
November to January are the peak pollution months in North India (Delhi, Agra, Rajasthan). During this time, the AQI can cross 400. Yes, carrying an N95 mask is highly recommended for sensitive travelers during these months. For the rest of the year (and in South India/Goa), air quality is generally much better.
Understanding AQI (Air Quality Index)
AQI 0-50 is Good. Delhi often hovers around 150-200 (Moderate) but spikes in winter due to crop burning and weather patterns. Mumbai has sea breeze but construction dust can be an issue.
Tips for Travelers
- Download an AQI App: Check 'AirVisual' before your morning run.
- Use Air Purifiers: Most 5-star hotels and premium Airbnbs (like Expatly listings) have air purifiers in the rooms.
- Escape to the Hills: If the smog is too much, take a weekend trip to Shimla or Rishikesh (4-6 hours from Delhi) for fresh air.