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

Reykjavik, Iceland

23 · Good

🔥 Dirtiest spot right now

Riyadh, Saudi Arabia

1851 · Hazardous

🖢 Carbon dioxide, right now

427.0 ppm

NOAA Mauna Loa, Hawaii reading, 2026-10-27 · the full carbon story →

Middle of the pack

median AQI 65

across 48 monitored world cities

⚠ 23 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
Reykjavik, Iceland	Europe	23 · Good	2.1 µg/m³	59 µg/m³	0.8 µg/m³
Toronto, Canada	Americas	25 · Good	10.7 µg/m³	34 µg/m³	32.3 µg/m³
Oslo, Norway	Europe	31 · Good	6.1 µg/m³	45 µg/m³	13.4 µg/m³
Wellington, New Zealand	Oceania	33 · Good	5.1 µg/m³	51 µg/m³	0.5 µg/m³
Athens, Greece	Europe	35 · Good	7.9 µg/m³	29 µg/m³	26.6 µg/m³
Lisbon, Portugal	Europe	36 · Good	6.1 µg/m³	53 µg/m³	17.3 µg/m³
Nairobi, Kenya	Africa	36 · Good	6.2 µg/m³	35 µg/m³	5.7 µg/m³
London, United Kingdom	Europe	38 · Good	13.2 µg/m³	10 µg/m³	45.8 µg/m³
Helsinki, Finland	Europe	41 · Good	5.3 µg/m³	60 µg/m³	4.4 µg/m³
Auckland, New Zealand	Oceania	41 · Good	9.2 µg/m³	56 µg/m³	0.9 µg/m³

The ten dirtiest

City	Region	US AQI	PM2.5	Ozone	NO2
Riyadh, Saudi Arabia	Asia	1851 · Hazardous	69.4 µg/m³	40 µg/m³	25.8 µg/m³
Beijing, China	Asia	198 · Unhealthy	156 µg/m³	2 µg/m³	45.1 µg/m³
Jakarta, Indonesia	Asia	189 · Unhealthy	111.1 µg/m³	13 µg/m³	85.4 µg/m³
Santiago, Chile	Americas	185 · Unhealthy	47.6 µg/m³	42 µg/m³	77 µg/m³
Delhi, India	Asia	168 · Unhealthy	83.8 µg/m³	38 µg/m³	44.6 µg/m³
Dubai, UAE	Asia	153 · Unhealthy	69.8 µg/m³	20 µg/m³	83.2 µg/m³
Hanoi, Vietnam	Asia	152 · Unhealthy	92.9 µg/m³	29 µg/m³	50.7 µg/m³
Mexico City, Mexico	Americas	140 · Sensitive groups	29.5 µg/m³	108 µg/m³	60.3 µg/m³
Krakow, Poland	Europe	124 · Sensitive groups	55.1 µg/m³	5 µg/m³	35.7 µg/m³
Almaty, Kazakhstan	Asia	120 · Sensitive groups	46.9 µg/m³	32 µg/m³	37.5 µg/m³

Full ranking — all 48 cities, cleanest to dirtiest

#	City	Region	US AQI	PM2.5
1	Reykjavik, Iceland	Europe	23 · Good	2.1 µg/m³
2	Toronto, Canada	Americas	25 · Good	10.7 µg/m³
3	Oslo, Norway	Europe	31 · Good	6.1 µg/m³
4	Wellington, New Zealand	Oceania	33 · Good	5.1 µg/m³
5	Athens, Greece	Europe	35 · Good	7.9 µg/m³
6	Lisbon, Portugal	Europe	36 · Good	6.1 µg/m³
7	Nairobi, Kenya	Africa	36 · Good	6.2 µg/m³
8	London, United Kingdom	Europe	38 · Good	13.2 µg/m³
9	Helsinki, Finland	Europe	41 · Good	5.3 µg/m³
10	Auckland, New Zealand	Oceania	41 · Good	9.2 µg/m³
11	Dublin, Ireland	Europe	42 · Good	6.1 µg/m³
12	Accra, Ghana	Africa	42 · Good	7.9 µg/m³
13	Brisbane, Australia	Oceania	42 · Good	9 µg/m³
14	Istanbul, Türkiye	Europe	47 · Good	10 µg/m³
15	Rome, Italy	Europe	52 · Moderate	12.9 µg/m³
16	Zurich, Switzerland	Europe	52 · Moderate	10.5 µg/m³
17	Perth, Australia	Oceania	52 · Moderate	10.3 µg/m³
18	Chicago, United States	Americas	55 · Moderate	9.7 µg/m³
19	Casablanca, Morocco	Africa	56 · Moderate	13.1 µg/m³
20	Houston, United States	Americas	58 · Moderate	13.1 µg/m³
21	Rio de Janeiro, Brazil	Americas	59 · Moderate	22.2 µg/m³
22	Buenos Aires, Argentina	Americas	63 · Moderate	13.7 µg/m³
23	Taipei, Taiwan	Asia	64 · Moderate	18 µg/m³
24	Lima, Peru	Americas	64 · Moderate	17.1 µg/m³
25	Addis Ababa, Ethiopia	Africa	65 · Moderate	25.2 µg/m³
26	Tokyo, Japan	Asia	67 · Moderate	29.1 µg/m³
27	Bangkok, Thailand	Asia	70 · Moderate	27.5 µg/m³
28	Kolkata, India	Asia	72 · Moderate	13.7 µg/m³
29	Los Angeles, United States	Americas	73 · Moderate	16.5 µg/m³
30	Seoul, South Korea	Asia	75 · Moderate	28 µg/m³
31	Vienna, Austria	Europe	77 · Moderate	17.4 µg/m³
32	Singapore, Singapore	Asia	83 · Moderate	22.6 µg/m³
33	Kuala Lumpur, Malaysia	Asia	85 · Moderate	20.8 µg/m³
34	Dhaka, Bangladesh	Asia	86 · Moderate	18.3 µg/m³
35	Doha, Qatar	Asia	89 · Moderate	29 µg/m³
36	Mumbai, India	Asia	93 · Moderate	30 µg/m³
37	Karachi, Pakistan	Asia	102 · Sensitive groups	34.8 µg/m³
38	Warsaw, Poland	Europe	116 · Sensitive groups	89.8 µg/m³
39	Almaty, Kazakhstan	Asia	120 · Sensitive groups	46.9 µg/m³
40	Krakow, Poland	Europe	124 · Sensitive groups	55.1 µg/m³
41	Mexico City, Mexico	Americas	140 · Sensitive groups	29.5 µg/m³
42	Hanoi, Vietnam	Asia	152 · Unhealthy	92.9 µg/m³
43	Dubai, UAE	Asia	153 · Unhealthy	69.8 µg/m³
44	Delhi, India	Asia	168 · Unhealthy	83.8 µg/m³
45	Santiago, Chile	Americas	185 · Unhealthy	47.6 µg/m³
46	Jakarta, Indonesia	Asia	189 · Unhealthy	111.1 µg/m³
47	Beijing, China	Asia	198 · Unhealthy	156 µg/m³
48	Riyadh, Saudi Arabia	Asia	1851 · Hazardous	69.4 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.