---
title: "Air Quality Cross Physics"
method: GET
path: "/api/v1/air-quality/cross-physics"
tags: ["Air Quality Data"]
---

# Air Quality Cross Physics

`GET /api/v1/air-quality/cross-physics`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/air-quality/cross-physics`
- Auth: none declared

Cross-physics correlations for air quality near a location.

Fetches current air quality data and correlates with:
  - Volcanic ash detection (PM10/PM2.5 ratio analysis)
  - Weather conditions (inversion, washout, humidity correction)
  - Economic activity proxy (PM/NO2 baseline comparison)
  - Health risk assessment
  - Pollution event classification

This is the premium cross-physics endpoint.

**Pricing:** Included in subscription tiers (legacy list price: GET /api/v1/billing/pricing).

## Query parameters

- `lat` number, required: Center latitude
- `lon` number, required: Center longitude
- `radius_km` number: Search radius in km (default 25)
- `provider` string: Provider filter: 'openaq', 'sensor_community', 'purpleair', or 'all'
- `x_api_key` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)