Update AirVisual, new link and name to IQAir

README.md

@@ -702,7 +702,6 @@ API | Description | Auth | HTTPS | CORS |
 ### Environment
 API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
-| [AirVisual](https://airvisual.com/api) | Air quality and weather data | `apiKey` | Yes | Unknown |
 | [BreezoMeter Pollen](https://docs.breezometer.com/api-documentation/pollen-api/v2/) | Daily Forecast pollen conditions data for a specific location | `apiKey` | Yes | Unknown |
 | [Carbon Interface](https://docs.carboninterface.com/) | API to calculate carbon (C02) emissions estimates for common C02 emitting activities | `apiKey` | Yes | Yes |
 | [Climatiq](https://docs.climatiq.io) | Calculate the environmental footprint created by a broad range of emission-generating activities | `apiKey` | Yes | Yes |
@@ -710,6 +709,7 @@ API | Description | Auth | HTTPS | CORS |
 | [CO2 Offset](https://co2offset.io/api.html) | API calculates and validates the carbon footprint | No | Yes | Unknown |
 | [Danish data service Energi](https://www.energidataservice.dk/) | Open energy data from Energinet to society | No | Yes | Unknown |
 | [GrünstromIndex](https://www.corrently.de/hintergrund/gruenstromindex/index.html) | Green Power Index for Germany (Grünstromindex/GSI) | No | No | Yes |
+| [IQAir](https://www.iqair.com/air-pollution-data-api) | Air quality and weather data | `apiKey` | Yes | Unknown |
 | [La Data Verte](https://ladataverte.fr) | Aggregation of multiple environmental indicators (CO2 emissions, Average temperature, etc) | No | Yes | Unknown |
 | [Luchtmeetnet](https://api-docs.luchtmeetnet.nl/) | Predicted and actual air quality components for The Netherlands (RIVM) | No | Yes | Unknown |
 | [National Grid ESO](https://data.nationalgrideso.com/) | Open data from Great Britain’s Electricity System Operator | No | Yes | Unknown |