Air quality comparison · India, 845 km apart
Bengaluru vs Mumbai Air quality index (AQI) today
Mumbai has cleaner air than Bengaluru right now: AQI 95 (Moderate) against 117 (Unhealthy for sensitive groups).
That puts them in different EPA bands, so the health advice differs today. But over the past 7 days, on modeled daily averages, Bengaluru averaged AQI 77 against 135, and it was the cleaner of the two on 7 of those days. Bengaluru has more tree cover.
India
AQI 117
Unhealthy for sensitive groups
Cleaner right now
- PM2.5
- 42 µg/m³2.8× WHO guideline
- Main pollutant
- PM2.5
- Source
- Ground station
- Reading
- Nov 11, 17:00 local
India
AQI 95
Moderate
Cleaner right now
- PM2.5
- 32.5 µg/m³2.2× WHO guideline
- Main pollutant
- PM2.5
- Source
- Ground station
- Reading
- Nov 11, 17:00 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Bengaluru117Mumbai95
Head to head
Bengaluru vs Mumbai at a glance
Bengaluru is ahead on 3 of 5 measures, and Mumbai on 2. The better figure in each row is marked.
| Bengaluru | Mumbai | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 117 | 95 (better) |
| PM2.5Fine particles, µg/m³. | 42 | 32.5 (better) |
| Past week's averageUS AQI, 7 days. | 77 (better) | 135 |
| Tree coverWithin 2 km of the center. | 36.7% (better) | 14.9% |
| Trees still neededTo reach a healthy canopy. | 0 (better) | 46.5K |
Air quality today
What is the air like in Bengaluru and Mumbai right now?
Mumbai has cleaner air than Bengaluru right now: AQI 95 (Moderate) against 117 (Unhealthy for sensitive groups). PM2.5 is setting the index in both.
Bengaluru's PM2.5 is about 2.8× the WHO's 24-hour guideline of 15 µg/m³. Mumbai's PM2.5 is about 2.2× the WHO's 24-hour guideline of 15 µg/m³.
Both readings come from nearby ground stations.
BengaluruMumbai
Concentrations at the same moment as the index above, for the pollutants both places report. Lower is better. The dark marks on the PM2.5 and PM10 rows show the WHO's 24-hour guidelines (15 and 45 µg/m³).
Bengaluru: Ground station · Hombegowda Nagar, Bengaluru - KSPCB, 3.7 km away · median of 8 stations. Data: OpenAQ · CPCB, Central Pollution Control Board, Government of India (GODL-India).
Mumbai: Ground station · Sion, Mumbai - MPCB, 3.2 km away · median of 11 stations. Data: OpenAQ · CPCB, Central Pollution Control Board, Government of India (GODL-India).
The past week
Which had cleaner air over the past 7 days?
But over the past 7 days, on modeled daily averages, Bengaluru averaged AQI 77 against 135, and it was the cleaner of the two on 7 of those days. A single reading can catch a city on a bad afternoon; the week says whether it was the weather or the place.
- Cleaner days
- Bengaluru7Mumbai0
- Average AQI
- Bengaluru77Mumbai135
- Worst day, AQI
- Bengaluru115Mumbai143
The daily numbers (7 days)
| Day | Bengaluru | Mumbai |
|---|---|---|
| Nov 5 | 62 | 134 |
| Nov 6 | 47 | 135 |
| Nov 7 | 54 | 131 |
| Nov 8 | 58 | 139 |
| Nov 9 | 95 | 139 |
| Nov 10 | 115 | 143 |
| Nov 11 | 109 | 124 |
Daily averages from the CAMS atmospheric model for both places, so the week compares like with like. They can differ from today's reading at the top of the page wherever that comes from a ground station.
What it means today
Is it safe to go outside in Bengaluru and Mumbai today?
Bengaluru (AQI 117, Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Mumbai (AQI 95, Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Exercise outdoors
- Bengaluru
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise.
- Mumbai
- Fine for most people; unusually sensitive people should take long or hard exercise easier.
Windows
- Bengaluru
- Close them to keep the outside air out.
- Mumbai
- Fine to open; close them if you are sensitive to pollution.
Masks
- Bengaluru
- Sensitive groups: an N95 outdoors.
- Mumbai
- Not needed for most people.
Air purifier
- Bengaluru
- Run one, especially in bedrooms.
- Mumbai
- Worth running if you are sensitive.
Against everywhere else
How do Bengaluru and Mumbai compare with the rest of the world?
Right now Bengaluru's air is cleaner than 15% of the 5,420 places Airleaf tracks, and Mumbai's is cleaner than 21%. Within India, that is 51% and 67% of its 471 measured places.
Cleaner air than…
- Bengaluru
- Beats 15%
- Mumbai
- Beats 21%
More tree cover than…
- Bengaluru
- Beats 79%
- Mumbai
- Beats 34%
Includes model estimates as well as station readings, so it can differ from our most polluted and cleanest air rankings, which use station readings only.
Satellite timelapses
Watch both change, year by year
A clear satellite photo a year of the land around each city. Press play, turn on the forest cleared since the first year, or drag the before and after.
Bengaluru
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
Mumbai
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
Trees
Which has more trees, Bengaluru or Mumbai?
Bengaluru has more tree cover: 36.7% of the land within 2 km of its center against 14.9% around Mumbai, or about 115,296 trees against 45,874.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Bengaluru | Mumbai | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 115K (better) | 45.9K |
| Trees still neededTo reach the target. Fewer is better. | 0 (better) | 46.5K |
| CO₂ absorbed each yearBy the trees already standing. | 2.5M kg (better) | 1.0M kg |
Tree cover on the satellite image
The same 2 km radius around each center, with the tree cover the satellite found marked on it.
Reading these numbers
How this comparison is made
Air quality index
The US EPA index, computed from current pollutant concentrations: ground stations where a place has them nearby, and the CAMS atmospheric model everywhere else. It moves hour to hour, so it is a snapshot rather than a verdict on either place. The guideline marks are from the WHO's 2021 air quality guidelines.
Trees and forest
Tree cover is the share of ground under canopy within 2 km of each center, read from Sentinel-2 satellite imagery at 10 m detail. It measures that circle, not the whole municipality, which is what makes the two comparable. Forest loss comes from the University of Maryland's Global Forest Change maps.
More on the method on the About Airleaf page.
Frequently asked
Bengaluru vs Mumbai: your questions answered
Is Mumbai cleaner than Bengaluru?
On air quality, yes, right now: Mumbai reads AQI 95 against 117, a gap of 22 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. But over the past 7 days, on modeled daily averages, Bengaluru averaged AQI 77 against 135, and it was the cleaner of the two on 7 of those days.
Is it safe to exercise outdoors in Bengaluru and Mumbai today?
In Bengaluru, at AQI 117: Sensitive groups should limit long or intense outdoor activity. In Mumbai, at AQI 95: Unusually sensitive people should consider limiting long outdoor exertion.
Which has more trees, Bengaluru or Mumbai?
Bengaluru has more tree cover: 36.7% of the land within 2 km of its center against 14.9% around Mumbai, or about 115,296 trees against 45,874. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Bengaluru and Mumbai need?
Bengaluru needs about 0 more to reach its canopy target of 35%, and Mumbai about 46,489 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Bengaluru and Mumbai measured the same way?
The method is the same: the US EPA index for air, and Sentinel-2 satellite imagery at 10 m detail over an identical radius for trees. Both readings come from nearby ground stations. Nothing is adjusted for population, city limits or climate.
How often does the Bengaluru vs Mumbai comparison update?
The air readings refresh about once an hour, and each reading's local time is shown at the top of the page. Tree cover comes from the latest clear satellite image of each area (Oct 14, 2026 and Oct 23, 2026), and the forest figures are published yearly.
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