Nanjing: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

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Latest air quality data: Nanjing

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Pollution and air quality forecast for Nanjing. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Nanjing:

particulate matter (PM2.5) dust - 19 (Moderate)
particulate matter (PM10) suspended dust - 20 (Moderate)
ozone (O3) - 32 (Good)
nitrogen dioxide (NO2) - 39 (Good)
sulfur dioxide (SO2) - 13 (Good)
carbon monoxide (CO) - 395 (Good)

Real-time Air Quality Index (AQI) for Nanjing, Thursday, August 27, 2026: 2.

AQI 2 Moderate

What is the air quality in Nanjing today? Is the air polluted in Nanjing?. Is there smog?

Today (Thursday, August 27, 2026) air quality is moderate in Nanjing. Some pollutants in Nanjing may slightly affect very few hypersensitive individuals. Air pollutants in Nanjing may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Nanjing? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 19 (Moderate) For comparison, the highest level of PM2.5 in Nanjing in the last 7 days was: 27 (Wednesday, August 26, 2026) and the lowest: 13 (Monday, August 24, 2026). The highest PM2.5 values were recorded: 70 (January 2019). The lowest level of particulate matter PM2.5 pollution occurs in month: July (20).

What is the level of PM10 today in Nanjing? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Nanjing is: 20 (Moderate) The highest PM10 values usually occur in month: 104 (January 2019). The lowest value of particulate matter PM10 pollution in Nanjing is usually recorded in: August (38).

How is the O3 level today in Nanjing? (ozone (O3))
32 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
39 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
13 (Good)

How high is the CO level? (carbon monoxide (CO))
395 (Good)

Current data Thursday, August 27, 2026 at 9:00 AM

PM2,5 19 (Moderate)

PM10 20 (Moderate)

O3 32 (Good)

NO2 39 (Good)

SO2 13 (Good)

CO 395 (Good)

Data on air pollution from recent days in Nanjing

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	21 Moderate	27 Moderate	21 Moderate	13 Moderate	15 Moderate	15 Moderate	20 Moderate	21 Moderate
pm10	22 Moderate	28 Moderate	25 Moderate	15 Good	17 Good	17 Good	22 Moderate	22 Moderate
o3	38 Good	33 Good	27 Good	51 Good	50 Good	24 Good	17 Good	26 Good
no2	50 Moderate	54 Moderate	40 Moderate	29 Good	39 Good	47 Moderate	49 Moderate	48 Moderate
so2	10 Good	14 Good	11 Good	6 Good	9 Good	9 Good	12 Good	14 Good
co	325 Good	445 Good	342 Good	267 Good	280 Good	364 Good	433 Good	401 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Nanjing from October 2018 to May 2020

index	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
pm25	31 (Moderate)	32 (Moderate)	31 (Moderate)	32 (Moderate)	63 (Unhealthy)	53 (Unhealthy for Sensitive Groups)	36 (Unhealthy for Sensitive Groups)	39 (Unhealthy for Sensitive Groups)	27 (Moderate)	23 (Moderate)	20 (Moderate)	31 (Moderate)	31 (Moderate)	36 (Unhealthy for Sensitive Groups)	47 (Unhealthy for Sensitive Groups)	57 (Unhealthy)	70 (Unhealthy)	45 (Unhealthy for Sensitive Groups)	53 (Unhealthy for Sensitive Groups)	29 (Moderate)
co	859 (Good)	830 (Good)	697 (Good)	624 (Good)	891 (Good)	1 (Good)	758 (Good)	804 (Good)	728 (Good)	765 (Good)	982 (Good)	918 (Good)	748 (Good)	799 (Good)	982 (Good)	646 (Good)	566 (Good)	535 (Good)	656 (Good)	322 (Good)
no2	28 (Good)	36 (Good)	33 (Good)	24 (Good)	36 (Good)	55 (Moderate)	50 (Moderate)	46 (Moderate)	35 (Good)	23 (Good)	26 (Good)	26 (Good)	38 (Good)	42 (Moderate)	48 (Moderate)	40 (Good)	61 (Moderate)	53 (Moderate)	48 (Moderate)	44 (Moderate)
o3	136 (Unhealthy for Sensitive Groups)	140 (Unhealthy for Sensitive Groups)	110 (Moderate)	90 (Moderate)	65 (Good)	69 (Good)	101 (Moderate)	122 (Unhealthy for Sensitive Groups)	170 (Unhealthy)	163 (Unhealthy)	144 (Unhealthy for Sensitive Groups)	175 (Unhealthy)	159 (Unhealthy)	125 (Unhealthy for Sensitive Groups)	111 (Moderate)	86 (Moderate)	67 (Good)	55 (Good)	102 (Moderate)	134 (Unhealthy for Sensitive Groups)
pm10	64 (Unhealthy for Sensitive Groups)	76 (Unhealthy for Sensitive Groups)	60 (Unhealthy for Sensitive Groups)	46 (Moderate)	88 (Unhealthy)	81 (Unhealthy)	87 (Unhealthy)	91 (Unhealthy)	50 (Moderate)	38 (Moderate)	48 (Moderate)	52 (Unhealthy for Sensitive Groups)	74 (Unhealthy for Sensitive Groups)	74 (Unhealthy for Sensitive Groups)	96 (Unhealthy)	83 (Unhealthy)	104 (Unhealthy)	76 (Unhealthy for Sensitive Groups)	82 (Unhealthy)	69 (Unhealthy for Sensitive Groups)
so2	7.1 (Good)	8.3 (Good)	7.8 (Good)	6.3 (Good)	5.6 (Good)	11 (Good)	9.6 (Good)	10 (Good)	10 (Good)	5.2 (Good)	7.4 (Good)	13 (Good)	15 (Good)	11 (Good)	14 (Good)	9.1 (Good)	11 (Good)	9.8 (Good)	8.5 (Good)	9 (Good)

data source »

Nanjing

Thursday, August 27, 2026 at 9:00 AM

PM2,5 19 (Moderate)

particulate matter (PM2.5) dust

PM10 20 (Moderate)

particulate matter (PM10) suspended dust

O3 32 (Good)

ozone (O3)

NO2 39 (Good)

nitrogen dioxide (NO2)

SO2 13 (Good)

sulfur dioxide (SO2)

CO 395 (Good)

carbon monoxide (CO)

Nanjing

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	21	20	15	15	13	21	27	21
pm10	22	22	17	17	15	25	28	22
o3	26	17	24	50	51	27	33	38
no2	48	49	47	39	29	40	54	50
so2	14	12	9.4	9.1	5.7	11	14	10
co	401	433	364	280	267	342	445	325

山西路

index	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
pm25	31	32	31	32	63	53	36	39	27	23	20	31	31	36	47	57	70	45	53	29
co	859	830	697	624	891	1	758	804	728	765	982	918	748	799	982	646	566	535	656	322
no2	28	36	33	24	36	55	50	46	35	23	26	26	38	42	48	40	61	53	48	44
o3	136	140	110	90	65	69	101	122	170	163	144	175	159	125	111	86	67	55	102	134
pm10	64	76	60	46	88	81	87	91	50	38	48	52	74	74	96	83	104	76	82	69
so2	7.1	8.3	7.8	6.3	5.6	11	9.6	10	10	5.2	7.4	13	15	11	14	9.1	11	9.8	8.5	9

* Pollution data source: https://openaq.org (ChinaAQIData) The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — China

16-day weather forecast for China: today around 28°C (partly cloudy), lows near 17°C. Daily temperature and conditions, updated every day. Strong wind (about 33 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — China

The UV index in China today is 5.2 (moderate) — unprotected fair skin can burn in about 40 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Nanjing — compare nearby locations.

Shanghai 16 µg/m³
Puyang 15 µg/m³
Zhumadian 30 µg/m³
Wuhan 17 µg/m³
Kaifeng 17 µg/m³
Yueyang 18 µg/m³
JejuSouth Korea 5 µg/m³
Shiyan 21 µg/m³

Frequently asked questions

Is the air safe to breathe in Nanjing today?

The current average PM2.5 across Nanjing is about 19 µg/m³, rated “Moderate”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.

What is the current PM2.5 level in Nanjing?

Right now PM2.5 in Nanjing averages about 19 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Nanjing?

Over the past week, the highest daily PM2.5 in Nanjing was recorded on Wednesday, August 26 (about 27 µg/m³).

What is the UV index in Nanjing today?

The UV index in Nanjing today is 5.2 (moderate) — unprotected fair skin can burn in about 40 minutes.

Does today's wind help disperse smog in Nanjing?

Strong wind (about 33 km/h) is actively clearing smog and dust away.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.