Today’s Air Quality Index (AQI)
National Capital Region, PH
4:23 PM, Mar 5, 2026
Last updated on: 4:23 PM
45
Good Air is clean and safe. No health risks expected. Everyone can enjoy outdoor activities without concern.
Good
Moderate
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250
300+
Primary Pollutant: PM2.5 (Particulate matter less than 9.03 microns)
Pollutant Details
Good Particulate Matter (PM₂.₅) 9.03 µg/m³
National Capital Region Particulate Matter (PM₂.₅) Level Philippines
Particulate Matter (PM₂.₅)
9.03 µg/m³ Good
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
0
10
25
50
75
100+

The current Particulate Matter (PM₂.₅) level at National Capital Region is 9.03 µg/m³ , which is excellent. The air is clean and safe for everyone.

1.7x Below
The current Particulate Matter (PM₂.₅) level in National Capital Region is 1.7x Below the recommended WHO guideline of 15 µg/m³.
Pollutant Sources:
  • Vehicle exhaust (especially diesel)
  • Industrial emissions
  • Residential wood burning
  • Wildfires
  • Construction and demolition dust
  • Coal and biomass burning
  • Secondary formation from gases like SO₂, NOx
✕
Good Particulate Matter (PM₁₀) 12.16 µg/m³
National Capital Region Particulate Matter (PM₁₀) Level Philippines
Particulate Matter (PM₁₀)
12.16 µg/m³ Good
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
Poor
Unhealthy
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0
20
50
100
200
250+

The current Particulate Matter (PM₁₀) level at National Capital Region is 12.16 µg/m³ , which is excellent. The air is clean and safe for everyone.

3.7x Below
The current Particulate Matter (PM₁₀) level in National Capital Region is 3.7x Below the recommended WHO guideline of 45 µg/m³.
Pollutant Sources:
  • Road dust and soil dust
  • Construction sites
  • Mining and agriculture
  • Industrial grinding/crushing
  • Pollen, mold spores
  • Sea spray in coastal areas
✕
Good Sulphur Dioxide (SO₂) 1.91 µg/m³
National Capital Region Sulphur Dioxide (SO₂) Level Philippines
Sulphur Dioxide (SO₂)
1.91 µg/m³ Good
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
Poor
Unhealthy
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0
20
80
250
350
400+

The current Sulphur Dioxide (SO₂) level at National Capital Region is 1.91 µg/m³ , which is excellent. The air is clean and safe for everyone.

20.9x Below
The current Sulphur Dioxide (SO₂) level in National Capital Region is 20.9x Below the recommended WHO guideline of 40 µg/m³.
Pollutant Sources:
  • Coal-fired power plants
  • Industrial boilers
  • Oil refineries
  • Ships using high-sulfur fuel
  • Metal smelting
✕
Good Nitrogen Dioxide (NO₂) 0.56 µg/m³
National Capital Region Nitrogen Dioxide (NO₂) Level Philippines
Nitrogen Dioxide (NO₂)
0.56 µg/m³ Good
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
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0
40
70
150
200
250+

The current Nitrogen Dioxide (NO₂) level at National Capital Region is 0.56 µg/m³ , which is excellent. The air is clean and safe for everyone.

44.6x Below
The current Nitrogen Dioxide (NO₂) level in National Capital Region is 44.6x Below the recommended WHO guideline of 25 µg/m³.
Pollutant Sources:
  • Vehicle engines (especially diesel)
  • Heating systems
  • Power plants (burning fossil fuels)
  • Gas stoves (indoor NO₂)
  • Industrial combustion processes
✕
Moderate Ozone (O₃) 75 µg/m³
National Capital Region Ozone (O₃) Level Philippines
Ozone (O₃)
75 µg/m³ Moderate
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
Poor
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Hazardous
0
60
100
140
180
220+

The current Ozone (O₃) level at National Capital Region is 75 µg/m³ , which is acceptable. Sensitive individuals should take light caution.

1.3x Below
The current Ozone (O₃) level in National Capital Region is 1.3x Below the recommended WHO guideline of 100 µg/m³.
Pollutant Sources:
  • Car and truck exhaust
  • Power plants
  • Industrial solvents and paints (VOCs)
  • Chemical manufacturing
  • Gasoline vapors
  • Lawn equipment
✕
Good Carbon Monoxide (CO) 127.33 µg/m³
National Capital Region Carbon Monoxide (CO) Level Philippines
Carbon Monoxide (CO)
127.33 µg/m³ Good
Last updated on: Mar 5, 2026 4:23 PM
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
0
4400
9400
12400
15400
18000+

The current Carbon Monoxide (CO) level at National Capital Region is 127.33 µg/m³ , which is excellent. The air is clean and safe for everyone.

31.4x Below
The current Carbon Monoxide (CO) level in National Capital Region is 31.4x Below the recommended WHO guideline of 4000 µg/m³.
Pollutant Sources:
  • Incomplete combustion in vehicles
  • Wildfires
  • Gas stoves and heaters
  • Cigarette smoke
  • Wood burning stoves
  • Faulty indoor appliances
✕
Air Quality Hourly Forecast
  • Daily
  • Hourly
Good Air is clean and safe. No health risks expected. Everyone can enjoy outdoor activities without concern.
Good Particulate Matter (PM₂.₅) 9.61 µg/m³
Good Particulate Matter (PM₁₀) 13.61 µg/m³
Good Sulphur Dioxide (SO₂) 3.73 µg/m³
Good Nitrogen Dioxide (NO₂) 3.96 µg/m³
Good Ozone (O₃) 56.73 µg/m³
Good Carbon Monoxide (CO) 172.01 µg/m³
Poor Air quality is poor. Sensitive individuals may experience symptoms such as coughing or throat irritation. Limit outdoor activity.
Poor Particulate Matter (PM₂.₅) 26.8 µg/m³
Moderate Particulate Matter (PM₁₀) 33.62 µg/m³
Good Sulphur Dioxide (SO₂) 5.22 µg/m³
Good Nitrogen Dioxide (NO₂) 2.94 µg/m³
Moderate Ozone (O₃) 90.23 µg/m³
Good Carbon Monoxide (CO) 239.23 µg/m³
Moderate The air quality is generally acceptable for most people. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.
Moderate Particulate Matter (PM₂.₅) 17.85 µg/m³
Moderate Particulate Matter (PM₁₀) 22.81 µg/m³
Good Sulphur Dioxide (SO₂) 4.3 µg/m³
Good Nitrogen Dioxide (NO₂) 2.87 µg/m³
Moderate Ozone (O₃) 81.37 µg/m³
Good Carbon Monoxide (CO) 227.38 µg/m³
Good Air is clean and safe. No health risks expected. Everyone can enjoy outdoor activities without concern.
Good Particulate Matter (PM₂.₅) 7.57 µg/m³
Good Particulate Matter (PM₁₀) 10.42 µg/m³
Good Sulphur Dioxide (SO₂) 3.77 µg/m³
Good Nitrogen Dioxide (NO₂) 2.99 µg/m³
Moderate Ozone (O₃) 67.61 µg/m³
Good Carbon Monoxide (CO) 180.44 µg/m³