Mumbai — Pollution Health Impact
2,685 days of CPCB data (2016–2024), translated through WHO 2021, Berkeley Earth and EPIC AQLI methods. Based on CPCB station data, 2016–present.
Maharashtra · Live Mumbai AQI →
Living in Mumbai is the population-level health-equivalent of smoking 3.4 cigarettes a day — roughly 1,248 cigarettes a year. On average, that chronic exposure shortens life expectancy by about 6.9 years per resident.
Cigarette-equivalence (Berkeley Earth 2015) and life-years lost (EPIC AQLI) are peer-reviewed communication heuristics, not clinical diagnoses. Full sources linked on the methodology page.
Headline impact numbers
Cigarettes/day by year
Annual average cigarette-equivalent.
Clean-air days (NAQI ≤ 50) by year
Days when NAQI stayed in the “Good” band.
Which WHO tier did Mumbai meet?
24-hour PM2.5 compliance vs WHO 2021 targets.
- AQG2 days (0.1%)
- IT-433 days (1.2%)
- IT-3278 days (10.4%)
- IT-2321 days (12.0%)
- IT-1978 days (36.4%)
- Above IT-11,073 days (40.0%)
WHO AQG (15) · IT-4 (25) · IT-3 (37.5) · IT-2 (50) · IT-1 (75) µg/m³ (24-hour PM2.5).
Life-years lost, by disease
Applying WHO's global attribution (68/14/14/4) to Mumbai's 6.9 year estimate.
- Heart + stroke: 4.7y
- COPD: 1.0y
- Child ALRI: 1.0y
- Lung cancer: 0.3y
Worst and best months
Drill into full monthly pattern on the seasonal Mumbai page →
High-risk days for vulnerable residents
- Days above WHO IT-3 (37.5 µg/m³) — pregnancy & infant risk elevated
- 2,372 (88.3%)
- Days above WHO IT-1 (75 µg/m³) — high risk for children under 5
- 1,073 (40.0%)
Source: WHO 2021 AQG interim-target risk framework; WHO 2024 ambient-air fact sheet identifies children under 5 and pregnant residents as the most vulnerable groups.
How Mumbai compares to nearby cities
- Similar exposureJodhpur3.7 cigs/day · 7.5 y lost · +0.3 vs Mumbai
- Similar exposureHapur3.7 cigs/day · 7.4 y lost · +0.3 vs Mumbai
- Cleaner peerAhmedabad3.4 cigs/day · 6.8 y lost · -0.0 vs Mumbai
- Dirtier peerKishanganj3.4 cigs/day · 6.9 y lost · +0.0 vs Mumbai
What the numbers say
Overview
Living in Mumbai carries a daily PM2.5 dose that Berkeley Earth compares to 3.4 cigarettes a day. Over a year, residents absorb the equivalent of 1,248 cigarettes.
The data story
EPIC's AQLI research attributes about 6.9 life-years lost per person from this chronic exposure. The WHO Air Quality Guideline was met on just 2 of 2,685 days (0.1%); 1,073 days (40.0%) exceeded even the 75 µg/m³ Interim Target-1 threshold.
Why this pattern
The burden concentrates in December — when the average cigarette-equivalent climbs to 5.0/day — and eases in June (2.3/day). Globally, WHO attributes 68% of PM2.5 deaths to heart disease and stroke, with the remainder split across COPD, childhood ALRI, and lung cancer.
What to do with this
Cigarette-equivalence is a communication tool, not a medical verdict. Still, the direction is clear: time indoors with a HEPA unit and a good-fit mask outdoors during the 2,372 days (88.3%) above WHO IT-3 meaningfully lowers exposure — especially for pregnant residents and children under 5.