Manila Air Quality (AQI)
Metro Manila, Philippines · Pop. 14.8M
Unhealthy (Sensitive)
PM2.5: 43 μg/m³ annual avg
Manila Monthly AQI Pattern
What Causes Manila's Air Pollution?
Jeepneys & Diesel Transport (60%+ of PM2.5)
Metro Manila runs on 66,000 registered public utility jeepneys and millions of tricycles, most running on Euro 2 or older diesel engines. These produce far more black carbon and PM2.5 than modern vehicles. EDSA — 23km of perpetual gridlock — carries over 300,000 vehicles per day.
Industrial Zones & Power Plants
The Cavite and Laguna industrial corridors host electronics manufacturing, food processing, and chemicals. The Luzon grid still relies on coal, with power plants in Batangas and Quezon provinces contributing transboundary pollution during south wind events.
Open Burning & Waste
Despite legal bans, open waste burning remains common in informal settlement areas. Agricultural burning in Bulacan, Pampanga, and Laguna during post-harvest season (October–January) drifts into Metro Manila under northeast winds.
Dry Season Temperature Inversions
From March–May, Manila's heat dome creates inversions that trap all pollutants near ground level. Without strong winds or rainfall to disperse emissions, the basin acts as a closed container. AQI can persist above 150 for consecutive days during inversion events.
EDSA: The Road That Shapes Manila's Air
Epifanio de los Santos Avenue (EDSA) is the main artery of Metro Manila — 23km connecting Caloocan to Pasay, carrying 300,000–400,000 vehicles per day. On-road monitoring consistently shows PM2.5 concentrations along EDSA 3–5× higher than residential areas just 500m away.
- Number coding scheme (UVVRP) reduces traffic by only ~17% — insufficient for meaningful air quality improvement
- EDSA busway (bus rapid transit) opened 2021: carries 400K daily, but diesel buses replaced older jeepneys unevenly
- MMDA air quality sensors along EDSA show consistent PM2.5 above 35 μg/m³ during peak hours
- Residents within 100m of EDSA have measurably higher respiratory disease rates (DOST study, 2022)
Manila Health Advisory by AQI Level
Manila Air Quality FAQ
What causes Manila's air pollution?
Manila's air pollution is primarily caused by an aging diesel vehicle fleet — especially jeepneys and tricycles — which accounts for over 60% of Metro Manila's PM2.5. Industrial emissions from the urban-fringe manufacturing zones, construction dust, and open waste burning are secondary contributors. Dry season temperature inversions (March–May) trap all these pollutants close to the ground.
When is Manila's air quality worst?
Manila's air quality is worst from March to May during the hot dry season. Low winds, high heat, and temperature inversions trap vehicle emissions in the Luzon basin. April typically has the highest monthly AQI. The cleanest months are July–September during the southwest monsoon, when heavy rains wash pollutants from the air.
Is it safe to exercise outdoors in Manila?
From June to February, outdoor exercise is generally acceptable, especially in parks away from major roads. During March–May, limit strenuous outdoor activity, especially between 10am–4pm when ozone and PM2.5 peak. Always check DENR EMB's air quality index before outdoor workouts. EDSA and other major roads should be avoided for exercise year-round due to direct diesel exhaust exposure.
Do I need a face mask in Manila?
N95 or KN95 masks are recommended during the March–May dry season when AQI regularly exceeds 100–150. Year-round, wearing a mask near major roads (EDSA, Commonwealth, Roxas Blvd) provides meaningful protection from diesel exhaust. Standard surgical masks filter some particles but are significantly less effective against PM2.5 than N95 respirators.
What is DENR EMB and how do I check Manila's AQI?
DENR-EMB (Department of Environment and Natural Resources - Environmental Management Bureau) operates the Philippine Air Quality Monitoring Network. Real-time data is available at the EMB National Air Quality Status website. The Philippines uses its own AQMS (Air Quality Monitoring System) with monitoring stations across Metro Manila, Cebu, Davao, and other cities.