Sion air quality · Mumbai, Maharashtra
Outdoor workers carry the heaviest dose at this level, hour after hour
US AQI 179 (Unhealthy) at the MPCB monitor in Sion, Mumbai, the 13th highest of 24 Mumbai monitors reporting. India's official NAQI (CPCB) 216 (Poor). Main pollutant: PM2.5.
Updated
Last 24 hours: worst 266 at midnight yesterday, best 58 at 2 pm yesterday (US AQI)
Pollutants at Sion
- PM2.5 · µg/m³95.36.4× WHO limit
- PM10 · µg/m³1924.3× WHO limit
- NO₂ · µg/m³38.21.5× WHO limit
- SO₂ · µg/m³3.8Under WHO limit
- CO · mg/m³0.26
This hour's readings at this monitor. WHO multiples use the 2021 24-hour guidelines.
Where Sion ranks in Mumbai
- 13thmost polluted of 24 Mumbai monitors right now
- 99average US AQI, last 30 days
- 195Mumbai's city figure now
Most polluted right now: Deonar 503 · Kandivali West 355 · Shivaji Nagar 313 · Malad West 287 · Mulund West 265.
Is it safe outside in Sion right now?
Some members of the general public may feel health effects; sensitive groups may feel more serious effects.
Walking and commuting
Take careKeep outdoor walks short and choose quieter streets away from traffic.
Running and jogging
AvoidMove your run indoors or reschedule for a cleaner hour.
Cycling
LimitKeep rides short and easy, or ride indoors.
Children playing outside
LimitLimit outdoor play to short, gentle sessions. Move sports indoors.
Older adults and heart or lung conditions
AvoidAvoid exertion outdoors. Follow your doctor's action plan.
Open windows
AvoidKeep windows closed while the air is unhealthy.
Mask outdoors
RecommendedWear a well-fitted N95 or FFP2 mask outdoors. Cloth and surgical masks do little against fine particles.
Air purifier indoors
RecommendedRun a HEPA purifier in the room you spend most time in.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
When the air is worst in Sion
Last 7 days, India timeOver the last 7 days, the air at this monitor was worst from 10 pm to 1 am (average US AQI 141) and cleanest from 11 am to 2 pm (80). Plan walks, runs and open windows for the cleaner hours.
Sion air quality, last 24 hours
Hourly US AQI, 23 of 24 hours, India timeIn the last 24 hours the US AQI at this monitor was highest at midnight yesterday (266, Very Unhealthy) and lowest at 2 pm yesterday (58, Moderate).
Sion air quality, last 30 days
Daily average, 26 days- 99average US AQI
- 147worst day, 24 October
- 75cleanest day, 30 October
- 0days above 150 (Unhealthy or worse)
Nearby monitors
All of MumbaiMumbai's air this October, area by area →
Sion air quality: common questions
What is the AQI in Sion right now?
The US AQI at the MPCB monitor in Sion, Mumbai is 179 (Unhealthy), the 13th highest of 24 Mumbai monitors reporting. Over the last 24 hours it ranged from 58 (2 pm yesterday) to 266 (midnight yesterday). The main pollutant is PM2.5. The same air reads India's official NAQI (CPCB) 216 (Poor).
What time is the air worst in Sion?
Over the last 7 days, from 10 pm to 1 am India time, when the monitor averaged 141. The cleanest stretch was 11 am to 2 pm, at 80.
How has Sion's air been over the last 30 days?
The monitor averaged a US AQI of 99 over 26 days with data. The worst day was 24 October at 147 and the cleanest 30 October at 75. 0 days were above 150 (Unhealthy or worse).
Where does Sion's air quality data come from?
From the continuous monitoring station run by the Maharashtra Pollution Control Board (MPCB) in CPCB's national network. Good Air shows the US EPA AQI worked out from those readings, and CPCB's own National Air Quality Index (NAQI) beside it. Good Air does not estimate or adjust the readings.
Source: Maharashtra Pollution Control Board (MPCB), via CPCB's national monitoring network. One monitor shows the air around it, which can differ from a few streets away. Readings are published by the monitoring agency and may be revised.