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AQI Calculator

Health & Body

Six-pollutant IAQI interpolation per HJ 633-2012 with level bands

Quick Answer

AQI Calculator: Six-pollutant IAQI interpolation per HJ 633-2012 with level bands. AQI Calculator uses standard health formulas to compute accurate results instantly.

Air Quality Index (AQI)

AQI50Excellent

Primary pollutant(s): pm25 / pm10 / so2 / no2 / co / o3

How it works

  1. 1IAQI per pollutant via linear interpolation (HJ 633-2012 Table 1): pm25=50, pm10=50, so2=50, no2=50, co=50, o3=50
  2. 2AQI = max(IAQI), rounded to integer: 50
  3. 3Level judged on 0–500 six bands: Excellent
Per HJ 633-2012: SO₂/NO₂/PM10/CO use 24-hour averages, O₃ uses daily max 8-hour sliding average, PM2.5/PM10 use 24-hour averages. O₃ above 800 (8h) is excluded and reported by 1-hour basis instead. Chinese breakpoints differ from US EPA — values are not directly comparable.

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How to Use

  1. Enter body metrics: fill height, weight, age etc. as prompted by the AQI Calculator.
  2. Read value and grade: results appear instantly with an authority-based classification.
  3. Check reference tables: confirm your range and healthy targets against the tables on this page.
  4. Back-solve your goal: adjust inputs to see what it takes to reach a target.

Key Points

  • AQI Calculator is a free online health tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Six-pollutant IAQI interpolation per HJ 633-2012 with level bands.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

AQI Calculator formula

AQI Calculator uses standard health formulas to compute accurate results instantly.

FAQ

How do I use the AQI Calculator?
Open the page and fill in the input fields — results update automatically. Six-pollutant IAQI interpolation per HJ 633-2012 with level bands.
Are the results accurate?
Results follow published international standards (WHO, ACE, IOM) and are for reference only.
Can this replace medical advice?
No. Always consult a qualified healthcare professional for health decisions.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on all devices.

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Source & Updates

Based on WHO, ACE, IOM and other published international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. AQI Calculator[EB/OL]. https://www.yijiansuan.com/en/c/health/aqi

Results provided by this tool are for reference only and do not constitute professional advice.