Exploring Air Quality Indexes Worldwide: A Look into Varied Systems and Local Measurements. Discover the Diverse AQI Systems and Localized Indices for Countries Across the Globe.
The list of monitored pollutants in different countries:
- Particulate Matter (PM2.5)
- Particulate Matter (PM10)
- Ozone (O3)
- Nitrogen dioxide (NO2)
- Carbon monoxide (CO)
- Sulfur dioxide (SO2)
Every pollutant is observed for a specific duration, after which its value is employed in calculating the index. Every country has its unique way of representing index ranges. If the range isn't defined, a textual description is utilized.
Air Quality Indices by Country
Air Quality Index |
Country |
Range |
PM2.5 |
PM10 |
O3 |
NO2 |
CO |
SO2 |
IQA (AD) |
Andorra |
1-6 |
24h |
24h |
1h |
1h |
8h |
1h |
AQI (AU) |
Australia (NEPM) |
0-200 |
24h |
24h |
1h/4h |
1h |
8h |
1h |
AQC (AU-NSW) |
Australia (NSW) |
0-200 |
24h |
24h |
1h/4h |
1h |
8h |
1h |
AQI (AT) |
Austria |
1-5 |
- |
24h |
1h/8h |
0.5h/24h |
1h/8h |
0.5h/24h |
AQI (AT-Vienna) |
Austria (Vienna) |
1-6 |
- |
24h |
1h/8h |
0.5h/24h |
1h/8h |
0.5h/24h |
BelAQI (BE) |
Belgium |
1-10 |
24h |
24h |
1h |
1h |
- |
- |
AQI (BD) |
Bangladesh |
0-500 |
24h |
24h |
1h/8h |
24h |
8h |
- |
AQI (BG) |
Bulgaria |
1-10 |
- |
1h |
1h |
1h |
1h |
1h |
AQI (BR) |
Brasil |
0-200 |
24h |
24h |
8h |
1h |
8h |
24h |
AQHI (CA) |
Canada |
1-10+ |
3h |
3h |
3h |
3h |
- |
- |
CAQI (EU) |
Europe |
0-100 |
1h/24h |
1h/24h |
1h |
1h |
8h |
1h |
KBI (CH) |
Switzerland |
- |
- |
24h |
1h |
24h |
- |
- |
AQI (CN) |
China |
0-500 |
24h |
24h |
1h/8h |
24h |
24h |
24h |
IBOCA (CO) |
Colombia |
0-100 |
24h |
24h |
8h |
1h |
8h |
1h |
ICCA (CR) |
Costa Rica |
0-100 |
24h |
24h |
1h |
1h |
8h |
24h |
AQI (CY) |
Cyprus |
1-4 |
1h |
1h |
1h |
1h |
1h |
1h |
AQI (CZ) |
Czechia |
- |
- |
3h |
3h |
3h |
- |
3h |
LQI (DE) |
Germany |
- |
24h |
24h |
1h |
1h |
- |
- |
IQCA (EC) |
Ecuador |
0-500 |
24h |
24h |
8h |
1h |
8h |
24h |
ICA (ES) |
Spain |
- |
24h |
24h |
8h |
1h |
- |
1h |
AQI (EE) |
Estonia |
- |
1h |
1h |
1h |
1h |
1h |
1h |
AQI (FI) |
Finland |
- |
1h |
1h |
1h |
1h |
- |
1h |
IQA (FR) |
France |
- |
24h |
24h |
24h |
24h |
- |
24h |
DAQI (UK) |
United Kingdom |
1-10 |
24h |
24h |
8h |
1h |
- |
0.25h |
AQHI (GI) |
Gibraltar |
1-10 |
24h |
24h |
8h |
1h |
8h |
0.25h |
AQHI (HK) |
Hong Kong |
1-10 |
3h |
3h |
3h |
3h |
- |
3h |
AQI (HU) |
Hungary |
1-10 |
- |
24h |
8h |
1h |
1h |
1h |
Air Quality Index |
Country |
Range |
PM2.5 |
PM10 |
O3 |
NO2 |
CO |
SO2 |
ISPU (ID) |
India |
0-500 |
24h |
24h |
24h |
24h |
24h |
24h |
NAQI (IN) |
Indonesia |
0-500 |
24h |
24h |
1h |
24h |
8h |
24h |
AQIH (IE) |
Ireland |
1-10 |
24h |
24h |
8h |
1h |
- |
1h |
AQI (IL) |
Israel |
100 to -400 |
24h |
24h |
8h |
1h |
0.5h |
1h |
CAI (KR) |
South Korea |
0-500 |
12h |
12h |
1h |
1h |
1h |
1h |
KAQI (KW) |
Kuwait |
0-500 |
- |
24h |
1h |
1h |
1h |
1h |
KBI (LI) |
Liechtenstein |
1-6 |
- |
24h |
1h |
24h |
- |
- |
OUI (LT) |
Lithuania |
1-5 |
- |
24h |
1h |
1h |
8h |
1h |
AQI (LU) |
Luxembourg |
1-10 |
- |
24h |
1h |
1h |
1h |
1h |
ICARS (MX) |
Mexico (ICARS) |
- |
12h |
12h |
1h |
1h |
8h |
24h |
AQI (MK) |
North Macedonia |
- |
1h |
1h |
1h |
1h |
1h |
1h |
AQI (MN) |
Mongolia |
0-500 |
24h |
24h |
1h |
1h |
1h |
1h |
API (MY) |
Malaysia |
0-500 |
24h |
24h |
1h |
1h |
8h |
24h |
LKI (NL) |
Netherlands |
1-11 |
1h |
1h |
1h |
1h |
- |
- |
AQI (NO) |
Norway |
- |
1h |
1h |
1h |
1h |
- |
1h |
AQI (NZ) |
New Zealand |
- |
24h |
24h |
1h |
1h |
1h |
1h |
INCA (PE) |
Peru |
- |
24h |
24h |
8h |
1h |
8h |
24h |
AQI (PH) |
Philippines |
0-500 |
24h |
24h |
1h |
1h |
8h |
24h |
AQI (PL) |
Poland |
- |
1h |
1h |
1h |
1h |
- |
1h |
IQar (PT) |
Portugal |
- |
24h |
24h |
1h |
1h |
- |
1h |
AQI (RO) |
Romania |
1-6 |
- |
24h |
1h |
1h |
8h |
1h |
PSI (SG) |
Singapore |
0-500 |
24h |
24h |
1h |
1h |
8h |
24h |
SAQI_11 (RS) |
Serbia |
1-5 |
1h |
1h |
1h |
1h |
1h |
1h |
AQI (SK) |
Slovakia |
- |
1h |
1h |
1h |
1h |
1h |
1h |
AQI (TH) |
Thailand |
0-200 |
24h |
24h |
8h |
1h |
8h |
1h |
HKI (TR) |
Turkey |
0-500 |
24h |
24h |
1h |
1h |
8h |
1h |
AQI (TW) |
Taiwan |
0-500 |
24h |
24h |
1h |
1h |
8h |
1h |
AQI (US) |
United States |
0-500 |
24h |
24h |
8h/1h |
1h |
8h |
1h |
AQI (VN) |
Vietnam |
0-500 |
24h |
24h |
1h |
1h |
1h |
1h |
Expanded Pollutant Measures in Indexes
- Ammonia (NH3)
- Benzene (C6H6)
- Non-methane hydrocarbons (NMHC)
- Nitrogen monoxide (NO)
Air Quality Index |
Country |
Range |
PM2.5 |
PM10 |
O3 |
NO2 |
CO |
SO2 |
NH3 |
C6H6 |
NMHC |
NO |
AQI (CY) |
Cyprus |
1-4 |
1h |
1h |
1h |
1h |
1h |
1h |
- |
1h |
- |
- |
AQI (EE) |
Estonia |
- |
1h |
1h |
1h |
1h |
1h |
1h |
1h |
1h |
- |
- |
NAQI (IN) |
Indonesia |
0-500 |
24h |
24h |
1h |
24h |
8h |
24h |
24h |
- |
- |
- |
AQI (LU) |
Luxembourg |
1-10 |
- |
24h |
1h |
1h |
1h |
1h |
- |
- |
- |
1h |
Countries utilizing CAQI (EU)
- Albania
- Armenia
- Belarus
- Bosnia and Herzegovina
- Croatia
- Denmark
- Georgia
- Greece
- Italy
- Kosovo
- Latvia
- Malta
- Mauritius
- Moldova
- Montenegro
- Slovenia
- Sweden
- Ukraine
Countries utilizing AQI (US)
- American Samoa
- Argentina
- Azerbaijan
- Bahamas
- Bahrain
- Brunei
- Chile
- Egypt
- Ethiopia
- Guam
- Japan
- Jordan
- Kenya
- Morocco
- Nepal
- Pakistan
- Puerto Rico
- Qatar
- Saudi Arabia
- South Africa
- Sri Lanka
- U.S. Virgin Islands
- Uganda
- United Arab Emirates
- United States
- Venezuela