REST API for real-time air quality index (AQI) and pollutant data. Query by city name or GPS coordinates.
- Two endpoints: city name or lat/lon coordinates
- Returns AQI + 6 major pollutants (PM2.5, PM10, O₃, NO₂, SO₂, CO)
- Real-time data from global monitoring networks
- 5,000 requests/month on free tier
- Example Response:
{ "air_quality_index": 85, "PM2.5": { "concentration": 4.72, "aqi": 15 }, "PM10": { "concentration": 5.9, "aqi": 5 }, "ozone": { "concentration": 70.32, "aqi": 85 }, "nitrogen_dioxide": { "concentration": 12.09, "aqi": 15 }, "sulfur_dioxide": { "concentration": 6.92, "aqi": 10 }, "carbon_monoxide": { "concentration": 222.07, "aqi": 2 } }- Create account at omkar.cloud
- Get API key from omkar.cloud/api-key
- Include
API-Keyheader in requests
curl -X GET "https://air-quality-api.omkar.cloud/air-quality/city?city=New%20York" \ -H "API-Key: YOUR_API_KEY"{ "air_quality_index": 85, "PM2.5": { "concentration": 4.72, "aqi": 15 }, "ozone": { "concentration": 70.32, "aqi": 85 } }pip install requestsimport requests response = requests.get( "https://air-quality-api.omkar.cloud/air-quality/city", params={"city": "New York"}, headers={"API-Key": "YOUR_API_KEY"} ) data = response.json() print(f"AQI: {data['air_quality_index']}")npm install axiosimport axios from "axios"; const response = await axios.get("https://air-quality-api.omkar.cloud/air-quality/city", { params: { city: "New York" }, headers: { "API-Key": "YOUR_API_KEY" } }); console.log(`AQI: ${response.data.air_quality_index}`);GET https://air-quality-api.omkar.cloud/air-quality/city GET https://air-quality-api.omkar.cloud/air-quality/coords | Header | Required | Description |
|---|---|---|
API-Key | Yes | API key from omkar.cloud/api-key |
| Parameter | Required | Description |
|---|---|---|
city | Yes | City name (e.g., "New York", "London") |
| Parameter | Required | Description |
|---|---|---|
lat | Yes | Latitude (-90 to 90) |
lon | Yes | Longitude (-180 to 180) |
| Field | Type | Description |
|---|---|---|
air_quality_index | number | Overall AQI (0-500 scale) |
PM2.5 | object | Fine particles (<2.5μm) |
PM10 | object | Coarse particles (<10μm) |
ozone | object | Ground-level ozone (O₃) |
nitrogen_dioxide | object | NO₂ from combustion |
sulfur_dioxide | object | SO₂ from industrial sources |
carbon_monoxide | object | CO from incomplete combustion |
Each pollutant object contains:
concentration— Measured value (μg/m³)aqi— Individual AQI for that pollutant
| Range | Level | Meaning |
|---|---|---|
| 0-50 | Good | Safe for everyone |
| 51-100 | Moderate | Acceptable |
| 101-150 | Unhealthy (Sensitive) | Limit outdoor activity if sensitive |
| 151-200 | Unhealthy | Everyone may feel effects |
| 201-300 | Very Unhealthy | Health alert |
| 301-500 | Hazardous | Emergency conditions |
response = requests.get( "https://air-quality-api.omkar.cloud/air-quality/city", params={"city": "Tokyo"}, headers={"API-Key": "YOUR_API_KEY"} ) aqi = response.json()["air_quality_index"] print(f"Tokyo AQI: {aqi}")response = requests.get( "https://air-quality-api.omkar.cloud/air-quality/coords", params={"lat": 51.5074, "lon": -0.1278}, headers={"API-Key": "YOUR_API_KEY"} ) data = response.json() print(f"London AQI: {data['air_quality_index']}")response = requests.get( "https://air-quality-api.omkar.cloud/air-quality/city", params={"city": "InvalidCity123"}, headers={"API-Key": "YOUR_API_KEY"} ) if response.status_code == 200: data = response.json() elif response.status_code == 401: # Invalid API key pass elif response.status_code == 429: # Rate limit exceeded pass| Plan | Price | Requests/Month |
|---|---|---|
| Free | $0 | 5,000 |
| Starter | $25 | 100,000 |
| Grow | $75 | 1,000,000 |
| Scale | $150 | 10,000,000 |
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