Air quality

Air quality in Comilla today

Updated

Unhealthy for Sensitive Groups (US AQI 150) People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. Model estimate for Mon, Oct 26, 12:00 am (18:00 UTC).

Live AQI, PM2.5, PM10 and ozone for Comilla, Chittagong, Bangladesh, with a 48-hour forecast and the best time to be outside.

US AQI now
150 Unhealthy for Sensitive Groups
PM2.5
71 µg/m³ 4.7× WHO 24-h guideline
PM10
72 µg/m³
Ozone
58 µg/m³
Dominant pollutant
PM2.5 sub-index 150
Best hour today
9:00 pm AQI 127
European AQI
71

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Air quality in Comilla right now

Right now the modelled US Air Quality Index for Comilla, Chittagong, Bangladesh is 150, which falls in the "Unhealthy for Sensitive Groups" band (up to 150). People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.

The index is driven mainly by PM2.5, whose own sub-index is 150. Fine and coarse particles come from traffic, heating, industry, dust and smoke; they build up on calm nights and clear when wind or rain arrives.

PM2.5 is 71 µg/m³, 4.7 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 72 µg/m³ against a guideline of 45; ozone is 58 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 27 µg/m³ (above the 24-hour guideline of 25).

Also this hour: carbon monoxide 618 µg/m³.

Comilla AQI forecast: next 48 hours

Over the next 24 hours the AQI is forecast to range from 127 around Mon 9:00 pm to 150 around Mon 12:00 am, staying "Unhealthy for Sensitive Groups" throughout.

The following day is expected to be cleaner, averaging about 117 against 137 for the next 24 hours.

Local time (Asia/Dhaka)US AQICategoryPM2.5 µg/m³PM10 µg/m³Ozone µg/m³
Mon 12:00 am150Unhealthy for Sensitive Groups71.27258
Mon 3:00 am146Unhealthy for Sensitive Groups62.96440
Mon 6:00 am140Unhealthy for Sensitive Groups54.85638
Mon 9:00 am139Unhealthy for Sensitive Groups33.836119
Mon 12:00 pm137Unhealthy for Sensitive Groups19.721147
Mon 3:00 pm133Unhealthy for Sensitive Groups15.817147
Mon 6:00 pm129Unhealthy for Sensitive Groups35.53687
Mon 9:00 pm127Unhealthy for Sensitive Groups74.77749
Tue 12:00 am129Unhealthy for Sensitive Groups77.88025
Tue 3:00 am128Unhealthy for Sensitive Groups45.14641
Tue 6:00 am121Unhealthy for Sensitive Groups32.53338
Tue 9:00 am115Unhealthy for Sensitive Groups26.627121
Tue 12:00 pm114Unhealthy for Sensitive Groups17.818153
Tue 3:00 pm113Unhealthy for Sensitive Groups17.218163
Tue 6:00 pm114Unhealthy for Sensitive Groups35.53675
Tue 9:00 pm108Unhealthy for Sensitive Groups17.41890
Wed 12:00 am91Moderate17.61883

Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.

Best time to be outside in Comilla today

Between 6 am and 9 pm local time, the cleanest air today is forecast around 9:00 pm (AQI 127, Unhealthy for Sensitive Groups) and the worst around 6:00 am (AQI 140). That is a swing of 13 points, so a run or walk around 9:00 pm is noticeably better.

Comilla vs the rest of Bangladesh

Across 26 Bangladesh cities we track, the average US AQI right now is 123 (Unhealthy for Sensitive Groups). Comilla at 150 is 27 points worse than average.

It ranks 26 of 26 from cleanest to most polluted; the cleanest is Chattogram (105) and the most polluted Comilla (150).

For context, the median across 3,909 cities worldwide is 57.

Air quality in cities near Comilla

CityDistanceUS AQICategoryPM2.5 µg/m³
Udaipur, Tripura31 km104Unhealthy for Sensitive Groups38
Agartala43 km142Unhealthy for Sensitive Groups61.5
Brāhmanbāria57 km142Unhealthy for Sensitive Groups61.5
Sonārgaon62 km120Unhealthy for Sensitive Groups49.1
Rāipur, Chittagong63 km125Unhealthy for Sensitive Groups57.6
Ashuganj City67 km142Unhealthy for Sensitive Groups61.5
Bhairab Bāzār69 km142Unhealthy for Sensitive Groups61.5
Narsingdi70 km135Unhealthy for Sensitive Groups78.7

Model vs measured

We found no measured PM2.5 sensor cell within 25 km of Comilla, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.

Wildfire smoke

PM2.5 is forecast to reach 85 µg/m³ in the next 24 hours while NASA satellites detected 15 fire hotspots within 300 km in the last day (nearest about 45 km away). Smoke is a likely contributor: keep windows closed, run an air purifier or HVAC filter, and check the fire map before heading out.

Advice for sensitive groups

At 150, children, older adults, pregnant people and anyone with asthma, COPD or heart disease should limit time outdoors, especially strenuous activity. A well-fitted N95/FFP2 mask cuts particle exposure; it does not filter ozone.

What the US AQI numbers mean

US AQICategoryWhat it means
0-50GoodAir quality is satisfactory and poses little or no risk; a good time for outdoor activity.
51-100ModerateAcceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
101-150Unhealthy for Sensitive GroupsPeople with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.
151-200UnhealthyEveryone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed.
201-300Very UnhealthyHealth alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors.
301-500HazardousEmergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500.

Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.

Nearby cities

More for Comilla

Air quality elsewhere

Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.