IQAir

Air quality, PM2.5 levels and city forecasts

City air quality readings and forecasts from IQAir.

Get air quality

Get air quality

Get current city air quality, weather, daily forecast, and health advice from IQAir. Forecast and some readings may be unavailable for certain cities.

Your information

City

City to look up, for example Delhi.

More options

CountryOptional

Country to distinguish cities with the same name, for example India.

1 credit per completed run

The same inputs also work from your code or an AI assistant. See For developers.

Example results

Air quality in Delhi

Unhealthy

India

US air quality index156

PM2.5 concentration (µg/m³)6312.6 times the WHO guideline

Updated Sep 29, 8:30 AM, Main pollutant: PM2.5

Current weather

Temperature (°C)26

Humidity (%)64

Wind speed (km/h)7

Daily forecast

Date	Air quality index	Category	Low (°C)	High (°C)
Sep 29, 2026	157	Unhealthy	24	34
Sep 30, 2026	154	Unhealthy	28	37
Oct 1, 2026	140	Unhealthy for sensitive groups	29	39

Health advice

Avoid outdoor exercise
Close your windows to avoid dirty outdoor air
Wear a mask outdoors
Run an air purifier

View air quality source

About the IQAir tool

IQAir, also called AirVisual, returns current city air quality, weather, daily forecasts, and health advice; provide a city and optionally a country.

Get air quality returns AQI, PM2.5, weather readings, and forecasts, though some data may be unavailable for certain cities.

Built from iqair.com and iqair.cn. Last checked Sep 29, 2026.

Actions

Get air quality

1 credit

Get current city air quality, weather, daily forecast, and health advice from IQAir. Forecast and some readings may be unavailable for certain cities.

Uses iqair.cn.

What you provide

Field	Type	Required	Description
City`city`	Text	Required	City to look up, for example Delhi.Example: Delhi
Country`country`	Text	Optional	Country to distinguish cities with the same name, for example India.Example: France

What you get

Field	Type	Description
City`city`	Text	Example: Delhi
Aqi Us`aqi_us`	Number	Example: 156
Country`country`	Text	Example: India
Category`category`	Text	Example: Unhealthy
Iqair URL`iqair_url`	Text	Example: https://www.iqair.com/air-quality/india/delhi/delhi
Pm25 Ug M3`pm25_ug_m3`	Number	Example: 63
Updated At`updated_at`	Text	Observation time in the city, ISO 8601 with offset.Example: 2026-09-29T08:30:00+05:30
Temperature C`temperature_c`	Number	Example: 26
Daily Forecast`daily_forecast`	List
Date`daily_forecast[].date`	Date	Example: 2026-09-29
Aqi Us`daily_forecast[].aqi_us`	Number	Example: 157
Category`daily_forecast[].category`	Text	Example: Unhealthy
Low Temperature C`daily_forecast[].low_temperature_c`	Number	Example: 24
High Temperature C`daily_forecast[].high_temperature_c`	Number	Example: 34
Main Pollutant`main_pollutant`	Text	Example: PM2.5
Wind Speed (km/h)`wind_speed_kmh`	Number	Example: 7
Humidity (%)`humidity_percent`	Number	Example: 64
Health Recommendations`health_recommendations`	List
Pm25 Who Guideline Times`pm25_who_guideline_times`	Number	Example: 12.6

Example result

For City: Delhi

JSON

{
  "city": "Delhi",
  "aqi_us": 156,
  "country": "India",
  "category": "Unhealthy",
  "iqair_url": "https://www.iqair.com/air-quality/india/delhi/delhi",
  "pm25_ug_m3": 63,
  "updated_at": "2026-09-29T08:30:00+05:30",
  "temperature_c": 26,
  "daily_forecast": [
    {
      "date": "2026-09-29",
      "aqi_us": 157,
      "category": "Unhealthy",
      "low_temperature_c": 24,
      "high_temperature_c": 34
    },
    {
      "date": "2026-09-30",
      "aqi_us": 154,
      "category": "Unhealthy",
      "low_temperature_c": 28,
      "high_temperature_c": 37
    },
    {
      "date": "2026-10-01",
      "aqi_us": 140,
      "category": "Unhealthy for sensitive groups",
      "low_temperature_c": 29,
      "high_temperature_c": 39
    }
  ],
  "main_pollutant": "PM2.5",
  "wind_speed_kmh": 7,
  "humidity_percent": 64,
  "health_recommendations": [
    "Avoid outdoor exercise",
    "Close your windows to avoid dirty outdoor air",
    "Wear a mask outdoors"
  ],
  "pm25_who_guideline_times": 12.6
}

For developers

Call it from your code with one request. Change the values in input to run it on new data. To get an API key, open Developers at the bottom of Studio, turn on Developer mode and go to API keys.

cURL

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 180 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@iqair",
  "visibility": "public",
  "operation": "get_air_quality",
  "version": 1,
  "input": {
    "city": "Delhi"
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

Monitor air quality and PM2.5 levels by city
Compare pollution levels across cities
Review daily air quality and temperature forecasts
Share health recommendations for local conditions

Questions about IQAir

Can I run it with my own inputs?

Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.

Can I call this IQAir tool as an API?

Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.

How much does it cost?

Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.

Do I need a IQAir account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from iqair.com when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.