City report · Kerala, India
Thrissur Air quality today
Air quality in Thrissur currently reads AQI 92 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 92
Moderate
- PM2.5, fine particles (µg/m³)
- 31.0
- tree cover
- 53.0%
- trees in this area
- 167K
- more trees needed
- 0
Measured across a 2 km radius around Veliyannur, Thrissur, Keralam, India (12.57 km²), from a satellite image of Oct 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Thrissur · AQI 92 (Moderate)
Thrissur's tree count comes to 166,504 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Thrissur today: AQI 92, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 20:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Corporation Ground, Thrissur- Kerala PCB, 2.7 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
31.0
PM10
58.3
NO₂
11.7
O₃
29.0
SO₂
0.8
CO
0.4
Data: OpenAQ · CPCB, Central Pollution Control Board, Government of India (GODL-India)
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Thrissur's daily AQI at 89 on average, from 67 on Nov 7 to an hourly peak of 156 on Nov 9.
This is the US EPA AQI. How it differs from India's AQI (CPCB) · The full guide
Where Thrissur stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Thrissur: Healthy tree cover
53.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
166,504
Target trees
166,504
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Thrissur lost?
Since 2001, the area within 10 km of Thrissur has lost about 416 hectares of forest (about 580 football pitches): 4.2% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 416 haabout 580 football pitches
- Share of its forest
- 4.2%of what there was in 2000
- Cleared for good
- 384 hadeforestation: turned into farms, mines or towns
The worst year was 2021, when about 57 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 1 ha | under 1 ha | 1 ha |
| 2002 | under 1 ha | under 1 ha | 1 ha |
| 2003 | 3 ha | under 1 ha | 3 ha |
| 2004 | 4 ha | 1 ha | 6 ha |
| 2005 | 4 ha | under 1 ha | 5 ha |
| 2006 | 10 ha | 3 ha | 13 ha |
| 2007 | 9 ha | 3 ha | 13 ha |
| 2008 | 11 ha | 2 ha | 12 ha |
| 2009 | 3 ha | under 1 ha | 3 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 26 ha | 3 ha | 29 ha |
| 2012 | 12 ha | 5 ha | 17 ha |
| 2013 | 9 ha | under 1 ha | 9 ha |
| 2014 | 7 ha | under 1 ha | 8 ha |
| 2015 | 2 ha | under 1 ha | 3 ha |
| 2016 | 20 ha | under 1 ha | 21 ha |
| 2017 | 24 ha | under 1 ha | 25 ha |
| 2018 | 23 ha | under 1 ha | 24 ha |
| 2019 | 32 ha | 1 ha | 34 ha |
| 2020 | 18 ha | under 1 ha | 19 ha |
| 2021 | 57 ha | under 1 ha | 57 ha |
| 2022 | 21 ha | under 1 ha | 21 ha |
| 2023 | 39 ha | under 1 ha | 39 ha |
| 2024 | 22 ha | under 1 ha | 22 ha |
| 2025 | 26 ha | 7 ha | 32 ha |
What is causing deforestation around Thrissur?
- Farms, pasture and plantationscleared for good63% · 264 ha
- Towns and roadscleared for good29% · 121 ha
- Unknown causescause unknown7.6% · 32 ha
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 20,500 ha
- Forest in 2020
- 20,400 ha
- Overall change
- −106 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Thrissur stayed about the same size, at about 20,400 hectares: new forest grew on about 245 hectares, and about 351 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Thrissur
Same 2 km radius, same index — so they compare directly.
- Ponnāni42.3 km
India
- Tree cover
- 83%
- Air quality
- 79
- Palakkad55.6 km
India
- Tree cover
- 48%
- Air quality
- 110
- Malappuram60.2 km
India
- Tree cover
- 83%
- Air quality
- 173
- Kanayannur61.4 km
India
- Tree cover
- 28%
- Air quality
- 91
- Kozhikode94.2 km
India
- Tree cover
- 42%
- Air quality
- 76
- Coimbatore98.3 km
India
- Tree cover
- 25%
- Air quality
- 99
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Frequently asked
Questions about Thrissur
What is the air quality (AQI) in Thrissur right now?
The latest reading for Thrissur shows an AQI of 92 (Moderate), measured Nov 11, 20:00 local time by the Corporation Ground, Thrissur- Kerala PCB ground monitoring station, 2.7 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Thrissur today?
At AQI 92 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Thrissur been like this week?
Over the last 7 days, the CAMS air-quality model put Thrissur's daily AQI at 89 on average, from 67 on Nov 7 to an hourly peak of 156 on Nov 9. On 1 of those days the average was above 100, unhealthy for sensitive groups.
Is Thrissur's AQI the same as India's AQI (CPCB)?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. India's Central Pollution Control Board (CPCB) publishes the National Air Quality Index on its own scale: 0–50 good, 51–100 satisfactory, 101–200 moderate, 201–300 poor, 301–400 very poor and 401–500 severe. The two scales don't line up. At moderate fine-particle levels the US scale reads higher: 55 µg/m³ of PM2.5 is 149 on the US AQI but about 92, "satisfactory", on India's. In heavy smog India's reads higher: 100 µg/m³ is 182 on the US AQI and about 232, "poor", on India's. CPCB also averages particles over 24 hours, so its figure moves more slowly than an hourly reading.
How much forest has the area around Thrissur lost since 2001?
Since 2001, the area within 10 km of Thrissur has lost about 416 hectares of forest (about 580 football pitches): 4.2% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Thrissur stayed about the same size, at about 20,400 hectares: new forest grew on about 245 hectares, and about 351 hectares were lost.
What is the tree count in Thrissur?
Thrissur has an estimated 166,504 trees across the 12.57 km² measured — 53.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Thrissur need?
Thrissur has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Thrissur's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Veliyannur, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Veliyannur; the tree count is an estimate derived from that cover.
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