Air quality
Air quality in Beijing today
Updated
Unhealthy (US AQI 170) Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. Model estimate for Mon, Oct 26, 4:31 am (20:31 UTC).
Live AQI, PM2.5, PM10 and ozone for Beijing, China, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 170 Unhealthy
- PM2.5
- 98 µg/m³ 6.6× WHO 24-h guideline
- PM10
- 106 µg/m³
- Ozone
- 0 µg/m³
Air quality in Beijing right now
Right now the modelled US Air Quality Index for Beijing, China is 170, which falls in the "Unhealthy" band (up to 200). Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed.
PM2.5 is 98 µg/m³, 6.6 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 106 µg/m³ against a guideline of 45; ozone is 0 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 52 µg/m³ (above the 24-hour guideline of 25).
Beijing vs the rest of China
Across 447 China cities we track, the average US AQI right now is 84 (Moderate). Beijing at 170 is 86 points worse than average.
It ranks 443 of 447 from cleanest to most polluted; the cleanest is Baicheng (19) and the most polluted Kashgar (250).
For context, the median across 3,556 cities worldwide is 58.
Air quality in cities near Beijing
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Langfang | 51 km | 106 | Unhealthy for Sensitive Groups | 58.3 |
| Sanhe | 58 km | 97 | Moderate | 58.6 |
| Tianjin | 108 km | 88 | Moderate | 43.4 |
| Xuanhua | 138 km | 80 | Moderate | 8.7 |
| Baoding | 140 km | 136 | Unhealthy for Sensitive Groups | 44.7 |
| Tanggu | 146 km | 62 | Moderate | 31.9 |
| Tangshan | 155 km | 71 | Moderate | 37.8 |
| Zhangjiakou | 162 km | 94 | Moderate | 7.2 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Beijing, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.
Wildfire smoke
PM2.5 is forecast to reach 98 µg/m³ in the next 24 hours while NASA satellites detected 58 fire hotspots within 300 km in the last day (nearest about 153 km away). Smoke is a likely contributor: keep windows closed, run an air purifier or HVAC filter, and check the fire map before heading out.
Advice for sensitive groups
At 170, children, older adults, pregnant people and anyone with asthma, COPD or heart disease should limit time outdoors, especially strenuous activity. A well-fitted N95/FFP2 mask cuts particle exposure; it does not filter ozone.
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.
Nearby cities
More for Beijing
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.