scientificair qualityPM2.5pollutionenvironmenthealthcitiesWHOIQAirglobal2025

Global Air Quality (PM2.5) by Major City — 2025

About this data

Comprehensive dataset of annual average PM2.5 concentrations across 80 major cities worldwide, sourced from the IQAir 2025 World Air Quality Report, WHO Ambient Air Quality Database, and regional monitoring networks. Covers all 6 inhabited continents with cities ranging from the most polluted (Byrnihat, India at 128.2 µg/m³) to the cleanest (Nieuwoudtville, South Africa at 1.0 µg/m³). Each record includes city, country, continent, PM2.5 annual average, WHO guideline compliance ratio, air quality category (Good/Moderate/Unhealthy/Very Unhealthy/Hazardous), estimated metro population, and primary pollution source. Useful for environmental research, public health analysis, urban planning, and climate policy studies.

Schema

Name	Type	Description
rank	string
city	string
country	string
continent	string
pm25_annual_avg_ugm3	string
who_guideline_ratio	string
air_quality_category	string
population_million	string
data_year	string
primary_pollution_source	string

Sample Data

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Open dataset

Quality: 3.5 / 5

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Via MCP Server

# 1. Add to your agent's MCP config (claude_desktop_config.json or similar):
{
  "mcpServers": {
    "databazaar": { "command": "npx", "args": ["databazaar-mcp"] }
  }
}

# 2. Your agent can then call:
search_datasets({ query: "Global Air Quality (PM2.5) by " })
// Found: b38f3d9c-777f-4c1c-af3a-ec4dbecddd30
get_download_url({ dataset_id: "b38f3d9c-777f-4c1c-af3a-ec4dbecddd30" })  // free — no API key needed

Via REST API

# Free dataset — no API key required:
curl https://api.databazaar.io/datasets/b38f3d9c-777f-4c1c-af3a-ec4dbecddd30/download-url