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Air quality now: AQI36Good, Mengmao

City report · Yunnan, China

Mengmao Air quality today

Air quality in Mengmao currently reads AQI 36 (Good): Air quality is satisfactory for everyone.

AQI 36

Air quality right now

Good

Main pollutant: PM2.5
PM2.5, fine particles (µg/m³)
5.3
tree cover
15.1%
trees in this area
47.0K
more trees needed
46.3K

Measured across a 2 km radius around Ruili, Dehong Dai and Jingpo Autonomous Prefecture, Yunnan, China (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.

Mengmao · AQI 36 (Good)

Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 23, 2026

Mengmao's tree count comes to 46,964 trees across 12.44 km² of land, 15 points below the 30% tree-cover level considered healthy for this area, so roughly 46,342 more trees would close the gap.

Air quality detail

Air quality in Mengmao today: AQI 36, Good

Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. Values in µg/m³.

Estimate · model corrected with 4 station cities within 245 km, e.g. Baoshan and Baoshan

Health signal

Air quality is satisfactory for everyone.

PM2.5

5.3

PM10

2.1

NO₂

1.2

O₃

71.0

SO₂

1.0

CO

258.0

Outdoor exercise
A good day to be active outside
Windows
Open them to air the house
Mask
Not needed
Air purifier
Not needed

Over the last 7 days, the CAMS air-quality model put Mengmao's daily AQI at 44 on average, from 13 on Nov 10 to an hourly peak of 98 on Nov 5.

Last 7 daysavg 44 · peak 98
Nov 5: AQI 66 (peak 98)Nov 6: AQI 52 (peak 95)Nov 7: AQI 61 (peak 93)Nov 8: AQI 50 (peak 90)Nov 9: AQI 33 (peak 58)Nov 10: AQI 13 (peak 43)Nov 11: AQI 34 (peak 46)
Nov 5Nov 11

Where Mengmao stands: the most polluted cities in the world right now · the cleanest

Tree cover detail

Tree cover in Mengmao: Critically low

15.1% tree cover against a 30% healthy-neighborhood target, across 12.44 km² of land.

15 points below target

Trees in this area

46,964

Target trees

93,306

More trees needed

46,342

CO₂ if planted / yr

1,020 t

Deforestation · 2001–2025

How much forest has Mengmao lost?

Since 2001, the area within 10 km of Mengmao has lost about 3,330 hectares of forest (about 4,700 football pitches): 30% of the forest it had in 2000. The biggest cause was logging (39%), after which forest can grow back. About 1,150 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns.

Satellite image of the area around Mengmao, February 2017

2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km southeast of the city center.

Forest lost since 2001
3,330 haabout 4,700 football pitches
Share of its forest
30%of what there was in 2000
Cleared for good
1,150 hadeforestation: turned into farms, mines or towns

Forest loss has stayed about the same: about 104 hectares a year in 2021–2025, against 100 hectares a year in 2016–2020. The worst year was 2012, when about 461 hectares of forest were lost.

Forest lost each year around Mengmao, 2001–2025

Hectares of forest lost each year

Forest lost each year around Mengmao, 2001–2025. Use the left and right arrow keys to read each year.461

Show the figures as a table
Forest lost each year around Mengmao, 2001–2025
YearCleared for goodCan grow backTotal
20012 ha5 ha8 ha
20027 ha25 ha32 ha
200321 ha11 ha32 ha
200424 ha24 ha48 ha
200524 ha36 ha60 ha
200613 ha39 ha52 ha
200778 ha202 ha280 ha
200820 ha38 ha58 ha
200971 ha115 ha186 ha
201062 ha54 ha116 ha
201163 ha148 ha211 ha
2012140 ha321 ha461 ha
2013118 ha184 ha302 ha
2014160 ha207 ha367 ha
201529 ha64 ha93 ha
201636 ha53 ha90 ha
201731 ha82 ha113 ha
201832 ha37 ha69 ha
201937 ha104 ha141 ha
202019 ha70 ha89 ha
202118 ha60 ha78 ha
202223 ha65 ha88 ha
202333 ha80 ha113 ha
202435 ha86 ha121 ha
202550 ha69 ha119 ha

What is causing deforestation around Mengmao?

  • Loggingcan grow back39% · 1,310 ha
  • Shifting farmingcan grow back26% · 869 ha
  • Farms, pasture and plantationscleared for good16% · 532 ha

Also: towns and roads, mining and energy, unknown causes.

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
14,900 ha
Forest in 2020
14,600 ha
Overall change
−314 haless forest than in 2000

Comparing satellite maps from 2000 and 2020, the forest around Mengmao shrank from about 14,900 hectares to 14,600 hectares, a net loss of about 314 hectares (−2.1%). New forest grew on about 1,520 hectares, but 1,840 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 Mengmao

Same 2 km radius, same index — so they compare directly.

  • Longling County

    China

    105.9 km
    Tree cover
    57%
    Air quality
    67
  • Lashio

    Myanmar

    119.1 km
    Tree cover
    31%
    Air quality
    13
  • Tengyue

    China

    128.5 km
    Tree cover
    19%
    Air quality
    78
  • Baoshan, Yunnan

    China

    180.6 km
    Tree cover
    18%
    Air quality
    17
  • Lushui

    China

    226.0 km
    Tree cover
    58%
    Air quality
    57
  • Lincang

    China

    227.0 km
    Tree cover
    15%
    Air quality
    67

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Mengmao air quality (AQI) and tree cover — measured by Airleaf
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Frequently asked

Questions about Mengmao

What is the air quality (AQI) in Mengmao right now?

The latest reading for Mengmao shows an AQI of 36 (Good), observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.

Is it safe to exercise outside in Mengmao today?

At AQI 36 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.

What has the air quality in Mengmao been like this week?

Over the last 7 days, the CAMS air-quality model put Mengmao's daily AQI at 44 on average, from 13 on Nov 10 to an hourly peak of 98 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.

How much forest has the area around Mengmao lost since 2001?

Since 2001, the area within 10 km of Mengmao has lost about 3,330 hectares of forest (about 4,700 football pitches): 30% of the forest it had in 2000. The biggest cause was logging (39%), after which forest can grow back. About 1,150 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 104 hectares a year in 2021–2025, against 100 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Mengmao shrank from about 14,900 hectares to 14,600 hectares, a net loss of about 314 hectares (−2.1%). New forest grew on about 1,520 hectares, but 1,840 hectares were lost.

What is the tree count in Mengmao?

Mengmao has an estimated 46,964 trees across the 12.44 km² of land measured — 15.1% tree cover, 15 percentage points short of the 30% tree-cover target set for this area.

How many more trees does Mengmao need?

Mengmao needs roughly 46,342 more trees to close a 15-point shortfall against its 30% tree-cover target — about 1,020 t of extra CO₂ absorbed per year once grown.

How are Mengmao's air quality and tree cover measured?

Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Ruili; the tree count is an estimate derived from that cover.

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