The Air We Breathe — Live

Clean spots, dirty spots and the carbon in the sky, updated from free open sources

Live air-quality readings for over seventy world cities, modelled by the Copernicus Atmosphere Monitoring Service and delivered through the free Open-Meteo API, refreshed on our side every 45 minutes. These are model estimates for each city’s coordinates — your street can differ; treat them as a global pulse, not a personal sensor. Weather for any of these cities lives at World Weather.

Right now, around the world

🌿 Cleanest spot right now

Wellington, New Zealand

21 · Good

🔥 Dirtiest spot right now

Riyadh, Saudi Arabia

1362 · Hazardous

🖢 Carbon dioxide, right now

427.3 ppm

NOAA Mauna Loa, Hawaii reading, 2026-10-28 · the full carbon story →

Middle of the pack

median AQI 63

across 49 monitored world cities

⚠ 22 of 71 city readings failed this round; the rest are current.

The ten cleanest points on Earth (of our network)

City	Region	US AQI	PM2.5	Ozone	NO2
Wellington, New Zealand	Oceania	21 · Good	1.1 µg/m³	49 µg/m³	0.6 µg/m³
Helsinki, Finland	Europe	30 · Good	3.5 µg/m³	49 µg/m³	4.3 µg/m³
Reykjavik, Iceland	Europe	31 · Good	3.7 µg/m³	62 µg/m³	1.5 µg/m³
Dublin, Ireland	Europe	31 · Good	5.7 µg/m³	71 µg/m³	3.6 µg/m³
Vancouver, Canada	Americas	35 · Good	7.8 µg/m³	46 µg/m³	30.9 µg/m³
Accra, Ghana	Africa	36 · Good	6.5 µg/m³	37 µg/m³	7 µg/m³
Copenhagen, Denmark	Europe	38 · Good	8 µg/m³	50 µg/m³	6 µg/m³
Nairobi, Kenya	Africa	38 · Good	8.6 µg/m³	22 µg/m³	10.6 µg/m³
Oslo, Norway	Europe	43 · Good	5.2 µg/m³	49 µg/m³	9.2 µg/m³
Chicago, United States	Americas	46 · Good	10.7 µg/m³	13 µg/m³	58.1 µg/m³

The ten dirtiest

City	Region	US AQI	PM2.5	Ozone	NO2
Riyadh, Saudi Arabia	Asia	1362 · Hazardous	192.3 µg/m³	50 µg/m³	27.4 µg/m³
Beijing, China	Asia	179 · Unhealthy	124.3 µg/m³	16 µg/m³	50.5 µg/m³
Santiago, Chile	Americas	175 · Unhealthy	61.7 µg/m³	44 µg/m³	82.3 µg/m³
Lahore, Pakistan	Asia	175 · Unhealthy	92.2 µg/m³	20 µg/m³	39.6 µg/m³
Shanghai, China	Asia	159 · Unhealthy	73.8 µg/m³	25 µg/m³	60.8 µg/m³
Mumbai, India	Asia	143 · Sensitive groups	43.4 µg/m³	112 µg/m³	19 µg/m³
Almaty, Kazakhstan	Asia	141 · Sensitive groups	43.1 µg/m³	63 µg/m³	35.8 µg/m³
Mexico City, Mexico	Americas	136 · Sensitive groups	19.3 µg/m³	63 µg/m³	55.9 µg/m³
Karachi, Pakistan	Asia	124 · Sensitive groups	40.3 µg/m³	27 µg/m³	43.3 µg/m³
Warsaw, Poland	Europe	118 · Sensitive groups	22 µg/m³	27 µg/m³	12 µg/m³

Full ranking — all 49 cities, cleanest to dirtiest

#	City	Region	US AQI	PM2.5
1	Wellington, New Zealand	Oceania	21 · Good	1.1 µg/m³
2	Helsinki, Finland	Europe	30 · Good	3.5 µg/m³
3	Reykjavik, Iceland	Europe	31 · Good	3.7 µg/m³
4	Dublin, Ireland	Europe	31 · Good	5.7 µg/m³
5	Vancouver, Canada	Americas	35 · Good	7.8 µg/m³
6	Accra, Ghana	Africa	36 · Good	6.5 µg/m³
7	Copenhagen, Denmark	Europe	38 · Good	8 µg/m³
8	Nairobi, Kenya	Africa	38 · Good	8.6 µg/m³
9	Oslo, Norway	Europe	43 · Good	5.2 µg/m³
10	Chicago, United States	Americas	46 · Good	10.7 µg/m³
11	Barcelona, Spain	Europe	50 · Good	15.4 µg/m³
12	Toronto, Canada	Americas	52 · Moderate	9.1 µg/m³
13	Brisbane, Australia	Oceania	53 · Moderate	8.6 µg/m³
14	Auckland, New Zealand	Oceania	53 · Moderate	13.1 µg/m³
15	Rome, Italy	Europe	54 · Moderate	10.2 µg/m³
16	Lisbon, Portugal	Europe	54 · Moderate	10.8 µg/m³
17	Kolkata, India	Asia	55 · Moderate	14.6 µg/m³
18	Vienna, Austria	Europe	55 · Moderate	17.7 µg/m³
19	Buenos Aires, Argentina	Americas	55 · Moderate	10.2 µg/m³
20	Zurich, Switzerland	Europe	57 · Moderate	13.4 µg/m³
21	Athens, Greece	Europe	59 · Moderate	16.1 µg/m³
22	Melbourne, Australia	Oceania	59 · Moderate	15.9 µg/m³
23	Addis Ababa, Ethiopia	Africa	60 · Moderate	19 µg/m³
24	Madrid, Spain	Europe	61 · Moderate	23.9 µg/m³
25	Lima, Peru	Americas	63 · Moderate	13.6 µg/m³
26	Amsterdam, Netherlands	Europe	64 · Moderate	22.2 µg/m³
27	London, United Kingdom	Europe	65 · Moderate	22.1 µg/m³
28	Los Angeles, United States	Americas	69 · Moderate	10.7 µg/m³
29	Casablanca, Morocco	Africa	74 · Moderate	31.3 µg/m³
30	Dhaka, Bangladesh	Asia	76 · Moderate	32.9 µg/m³
31	Rio de Janeiro, Brazil	Americas	78 · Moderate	11.3 µg/m³
32	Delhi, India	Asia	82 · Moderate	30.6 µg/m³
33	Singapore, Singapore	Asia	82 · Moderate	28.6 µg/m³
34	Kuala Lumpur, Malaysia	Asia	86 · Moderate	27.6 µg/m³
35	Seoul, South Korea	Asia	86 · Moderate	36.4 µg/m³
36	São Paulo, Brazil	Americas	90 · Moderate	20 µg/m³
37	Doha, Qatar	Asia	93 · Moderate	36.9 µg/m³
38	Tokyo, Japan	Asia	114 · Sensitive groups	42.6 µg/m³
39	Dubai, UAE	Asia	114 · Sensitive groups	37.6 µg/m³
40	Warsaw, Poland	Europe	118 · Sensitive groups	22 µg/m³
41	Karachi, Pakistan	Asia	124 · Sensitive groups	40.3 µg/m³
42	Mexico City, Mexico	Americas	136 · Sensitive groups	19.3 µg/m³
43	Almaty, Kazakhstan	Asia	141 · Sensitive groups	43.1 µg/m³
44	Mumbai, India	Asia	143 · Sensitive groups	43.4 µg/m³
45	Shanghai, China	Asia	159 · Unhealthy	73.8 µg/m³
46	Lahore, Pakistan	Asia	175 · Unhealthy	92.2 µg/m³
47	Santiago, Chile	Americas	175 · Unhealthy	61.7 µg/m³
48	Beijing, China	Asia	179 · Unhealthy	124.3 µg/m³
49	Riyadh, Saudi Arabia	Asia	1362 · Hazardous	192.3 µg/m³

Reading the scale (US AQI)

Number	What it means
0–50	30 · Good — air quality satisfactory for everyone.
51–100	75 · Moderate — acceptable; unusually sensitive people should mind long outdoor effort.
101–150	130 · Sensitive groups — children, older adults and lung/heart conditions feel it first.
151–200	170 · Unhealthy — everyone starts to notice; sensitive groups clearly affected.
201–300	250 · Very unhealthy — health effects likely; postpone hard outdoor exercise.
301+	350 · Hazardous — emergency conditions; nearly everyone is affected.