CAMS model • Open-Meteo

ChengduAir quality, PM2.5 and PM10

Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.

Chengdu - latest available concentrations (September 27, 2026, 09:00 local time): PM2.5: 71.2 µg/m³, PM10: 71.7 µg/m³, O₃: 67 µg/m³, NO₂: 49.9 µg/m³, SO₂: 8.5 µg/m³, CO: 2,510 µg/m³. These are hourly CAMS model values for a point representing the city.

Air quality questions →

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Chengdu · Air pollutant concentrations

Data time: September 27, 2026 · 09:00 · local time

PM2.5

Fine particles

71.2µg/m³Poor · 1 hour

PM10

Particulate matter

71.7µg/m³Moderate · 1 hour

O₃

Ozone

67µg/m³Fair · 1 hour

NO₂

Nitrogen dioxide

49.9µg/m³Moderate · 1 hour

SO₂

Sulphur dioxide

8.5µg/m³Good · 1 hour

Carbon monoxide

2,510µg/m³

PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →

DAILY DATA · Chengdu

Chengdu - air pollution over recent days (2026-08-31 - 2026-09-26)

Concentrations of all available pollutants for this city.

PM2.5Lowest 36.98 2026-09-01Highest 75.15 2026-09-052026-08-31 - 2026-09-26

Scroll the chart or table sideways to see the full period.

Chengdu · daily averages · µg/m³
Pollutant	2026-09-26	2026-09-25	2026-09-24	2026-09-23	2026-09-22	2026-09-21	2026-09-20	2026-09-07	2026-09-06	2026-09-05	2026-09-04	2026-09-03	2026-09-02	2026-09-01	2026-08-31
PM2.5	66.67	58.63	44.63	62.17	61.22	47.02	39.49	42.11	61.71	75.15	72.7	51.37	47.05	36.98	46.63
PM10	67.1	59.2	45.28	64	65.06	49.98	39.99	42.86	63.09	77.7	76.23	53.72	49.8	40.9	57.08
O₃	78.46	66.58	71.29	72.33	47.42	66.96	64.08	111.75	132.5	140.04	142.42	126.33	91.29	85.79	84.21
NO₂	54.68	51.23	38.33	53.8	59.2	46.67	38.03	30.67	38.99	49.24	47.6	50.24	49.54	53.32	44.48
SO₂	9.13	8.88	6.97	11.25	9.58	6.34	6.1	6.57	7.73	9.33	8.23	7.3	5.08	4.89	4.55
CO	2,386.75	1,353.96	907.96	1,309.46	1,490.63	1,230.58	665.92	1,029.21	807.5	1,232.08	1,493.54	1,417.71	1,388.08	972.88	977.83

A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.

How should I interpret the data and averaging period? →

Open-Meteo / CAMS ↗

AIR QUALITY ARCHIVE · Chengdu

Chengdu - air pollution history (2018-10 - 2020-05)

Compare monthly particle and gas concentrations in the available archive.

PM2.5Lowest 24.4 2019-07Highest 84.1 2019-012018-10 - 2020-05

Scroll the chart or table sideways to see the full period.

Chengdu · monthly averages · µg/m³
Pollutant	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10
PM2.5	44.4	44.4	44.7	56.1	72.2	83.5	52.9	34.1	31.5	29.5	24.4	27	40.7	45.6	46.8	58.7	84.1	64.9	59.4	55.9
PM10	77.5	71.1	74.9	70.6	85.2	110	79.8	55.1	60.3	66.7	45.5	43.8	58.9	71.6	74.3	76.2	115	100	88	84.5
O₃	194	131	105	91.3	60.6	54.4	52.7	72.6	92.9	175	130	145	134	131	85.5	59.7	52.7	33	56.2	70.1
NO₂	37.9	46.9	41.4	22.8	44	57.8	43.6	38.5	37.1	38.7	38.2	29.5	39.7	41.2	52.5	42.4	44.7	49.8	52.3	56.8
SO₂	5.59	4.92	6.77	5.87	7.87	10.3	8.22	7.02	7.09	5.44	4.11	3.39	3.86	4.74	3.85	3.56	3.3	5.24	5.25	6.27
CO	582	677	550	654	827	847	787	569	780	638	610	568	650	700	739	892	789	797	787	906

A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.

How should I interpret the data and averaging period? →

OpenAQ ↗

Historical data by station 1

AIR QUALITY ARCHIVE · 君平街

君平街

Station code: 君平街

Monthly monitoring station data.

PM2.5Lowest 24.4 2019-07Highest 84.1 2019-012018-10 - 2020-05

Scroll the chart or table sideways to see the full period.

君平街 · monthly averages · µg/m³
Pollutant	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10
PM2.5	44.4	44.4	44.7	56.1	72.2	83.5	52.9	34.1	31.5	29.5	24.4	27	40.7	45.6	46.8	58.7	84.1	64.9	59.4	55.9
PM10	77.5	71.1	74.9	70.6	85.2	110	79.8	55.1	60.3	66.7	45.5	43.8	58.9	71.6	74.3	76.2	115	100	88	84.5
O₃	194	131	105	91.3	60.6	54.4	52.7	72.6	92.9	175	130	145	134	131	85.5	59.7	52.7	33	56.2	70.1
NO₂	37.9	46.9	41.4	22.8	44	57.8	43.6	38.5	37.1	38.7	38.2	29.5	39.7	41.2	52.5	42.4	44.7	49.8	52.3	56.8
SO₂	5.59	4.92	6.77	5.87	7.87	10.3	8.22	7.02	7.09	5.44	4.11	3.39	3.86	4.74	3.85	3.56	3.3	5.24	5.25	6.27
CO	582	677	550	654	827	847	787	569	780	638	610	568	650	700	739	892	789	797	787	906

A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.

How should I interpret the data and averaging period? →

OpenAQ ↗ChinaAQIData

Environment and quality of life ratings · Chengdu

Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.

Indicator	Chengdu	Mongolia	Bhutan	Macau	Hong Kong	Myanmar
Green and Parks in the City	60%	27%	82%	—	52%	33%
particulate matter PM2.5 (µg/m³)	63	—	—	—	—	—
Pleasure of spending time in the city	40%	22%	61%	—	43%	24%
particulate matter PM10 (µg/m³)	105	—	—	—	—	—
Air Pollution	77%	87%	45%	—	67%	83%
Garbage Disposal	48%	27%	47%	—	52%	12%
Availability and quality of drinking water	51%	46%	64%	—	66%	34%
Cleanliness and tidiness	59%	29%	57%	—	54%	18%
Noise and Light pollution	50%	48%	55%	—	66%	52%
Water Pollution	59%	68%	56%	—	53%	74%

NO₂ 45.4O₃ 16

September 27, 202609:00

China · air quality in other cities

Shanghai Zhumadian Beijing Nanchong Tai’an Yueyang Kaifeng Wuhan Chongqing Tianjin Puyang Shenyangzhan Tianshui Shiyan Harbin Xi’an Lanzhou Guangzhou Nanjing

WEATHER & SURROUNDINGS

Chengdu · weather forecast

Daily maximum and minimum temperatures. Forecast point: 30.6667, 104.0667.

Scroll the forecast to see the following days.

Chengdu · September 24, 2026: minimum temperature 19.8°C, maximum 24.2°C. Wind: 7.8 km/h. Humidity: 95%.

Full forecast: temperature, rainfall, wind and humidity

Date	Day °C	Min °C	Max °C	Night °C	Rain mm	Wind m/s	Humidity %	Clouds %
2026-09-24	23.9	19.8	24.2	19.8	6.8	2.2	95	100
2026-09-25	23.1	20.6	26.9	23.5	2.3	2.7	87	100
2026-09-26	25.2	22.4	28.5	25.1	0.6	2.2	76	90
2026-09-27	23.6	23.2	24.7	23.6	1.1	2.1	84	100
2026-09-28	22.3	20.9	23.5	22.1	0.6	3	70	100
2026-09-29	22.5	21.3	25.3	22.8	3.5	2.5	68	99
2026-09-30	22.2	21.3	22.4	21.3	7	1.7	77	100
2026-10-01	21.2	20.1	23.8	20.5	0.1	2.5	74	100
2026-10-02	22.3	19.2	25.4	20.7	0.6	4	64	83
2026-10-03	20.2	19.9	25.3	22.7	0.2	2.2	79	100
2026-10-04	20.7	19.7	23	21.5	8.2	2.9	82	100
2026-10-05	22.3	19.1	24.6	19.1	9.5	3.5	46	100
2026-10-06	21.6	17.3	24.7	22.1	4.4	2.7	59	6
2026-10-07	24	19.5	26.8	22.5	0.5	2.9	47	100
2026-10-08	18.7	16.1	21.4	16.1	4.7	3.6	81	100
2026-10-09	13.9	13.9	15.8	14.6	7.2	4	87	100
2026-10-10	14.3	14.2	14.9	14.9	0.3	2.4	83	100
2026-10-11	17.9	13.7	19.7	18.1	0.8	1.9	68	62

UV index by day · Chengdu

City data.

SPF 30-50, hat and sunglasses are a must. Better to stay in the shade 11:00-15:00.

0-2 low3-5 moderate6-7 high8-10 very high11+ extreme

Scroll the forecast to see the following days.

Chengdu · September 26, 2026: UV index: 7.2 .

Indicator	2026-09-26	2026-09-27	2026-09-28	2026-09-29	2026-09-30	2026-10-01	2026-10-02	2026-10-03	2026-10-04	2026-10-05	2026-10-06	2026-10-07	2026-10-08	2026-10-09	2026-10-10	2026-10-11
UV index	7.2	2.7	1.6	4.8	1	4.5	6.5	4.6	3.9	4.6	6.7	7	0.7	0.5	0.9	—

Open-Meteo ↗

AIR QUALITY QUESTIONS

Chengdu · air pollution - questions and answers

What do the latest air quality data show for Chengdu?

When was PM2.5 highest in Chengdu over the past week?

The highest available daily mean PM2.5 was 66.7 µg/m³ (September 26, 2026). This comparison covers 7 days with data in the seven days before September 27, 2026. The day of the latest reading is excluded because it may be incomplete.

What period does the pollution history for Chengdu cover?

Available monthly means cover 2018-10 - 2020-05. The tables include PM2.5, PM10, O₃, NO₂, SO₂, CO. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.

Is the PM2.5 concentration for Chengdu an AQI score?

No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.

What UV index does the available forecast show for Chengdu?

For September 26, 2026, the forecast UV index is 7.2. The UV section also shows the following available days.

What wind speed is forecast for Chengdu?

For September 24, 2026, forecast wind speed is 7.8 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.

PM2.5 · PM10 · NO₂ · O₃

Understanding air quality and pollution data

What do PM2.5 and PM10 mean?

PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.

Where does the air pollution data come from?

The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.

How does PM2.5 concentration differ from AQI?

PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.

Which dates do the values and charts cover?

Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.

How can I check pollution in my city?

Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.

Open-Meteo / CAMS ↗NASA POWER ↗