Air quality
Air quality in Dingzhou today
Updated
Unhealthy (US AQI 151) Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. Model estimate for Mon, Oct 26, 3:00 am (19:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Dingzhou, Hebei, China, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 151 Unhealthy
- PM2.5
- 35 µg/m³ 2.3× WHO 24-h guideline
- PM10
- 39 µg/m³
- Ozone
- 0 µg/m³
- Dominant pollutant
- PM2.5 sub-index 151
- Best hour today
- 3:00 pm AQI 96
- European AQI
- 55
Air quality in Dingzhou right now
Right now the modelled US Air Quality Index for Dingzhou, Hebei, China is 151, 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.
The index is driven mainly by PM2.5, whose own sub-index is 151. Fine and coarse particles come from traffic, heating, industry, dust and smoke; they build up on calm nights and clear when wind or rain arrives.
PM2.5 is 35 µg/m³, 2.3 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 39 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).
Also this hour: carbon monoxide 477 µg/m³.
Dingzhou AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 96 around Mon 3:00 pm to 151 around Mon 3:00 am, from "Moderate" at best to "Unhealthy" at worst.
The following day is expected to be cleaner, averaging about 105 against 112 for the next 24 hours.
| Local time (Asia/Shanghai) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 3:00 am | 151 | Unhealthy | 34.6 | 39 | 0 |
| Mon 6:00 am | 133 | Unhealthy for Sensitive Groups | 41.9 | 49 | 2 |
| Mon 9:00 am | 113 | Unhealthy for Sensitive Groups | 41.8 | 50 | 13 |
| Mon 12:00 pm | 98 | Moderate | 31.5 | 37 | 28 |
| Mon 3:00 pm | 96 | Moderate | 25.1 | 30 | 23 |
| Mon 6:00 pm | 97 | Moderate | 43.4 | 48 | 4 |
| Mon 9:00 pm | 102 | Unhealthy for Sensitive Groups | 68.5 | 74 | 0 |
| Tue 12:00 am | 115 | Unhealthy for Sensitive Groups | 49.9 | 59 | 0 |
| Tue 3:00 am | 118 | Unhealthy for Sensitive Groups | 34.7 | 51 | 1 |
| Tue 6:00 am | 117 | Unhealthy for Sensitive Groups | 27.6 | 40 | 8 |
| Tue 9:00 am | 112 | Unhealthy for Sensitive Groups | 25.1 | 30 | 30 |
| Tue 12:00 pm | 105 | Unhealthy for Sensitive Groups | 14.4 | 43 | 59 |
| Tue 3:00 pm | 103 | Unhealthy for Sensitive Groups | 23.9 | 69 | 40 |
| Tue 6:00 pm | 102 | Unhealthy for Sensitive Groups | 38.8 | 67 | 8 |
| Tue 9:00 pm | 98 | Moderate | 38.4 | 54 | 5 |
| Wed 12:00 am | 91 | Moderate | 43.8 | 57 | 3 |
| Wed 3:00 am | 91 | Moderate | 41.3 | 51 | 2 |
Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.
Best time to be outside in Dingzhou today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 3:00 pm (AQI 96, Moderate) and the worst around 6:00 am (AQI 133). That is a swing of 37 points, so a run or walk around 3:00 pm is noticeably better.
Dingzhou vs the rest of China
Across 467 China cities we track, the average US AQI right now is 84 (Moderate). Dingzhou at 151 is 67 points worse than average.
For context, the median across 3,909 cities worldwide is 56.
Air quality in cities near Dingzhou
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Baoding | 57 km | 143 | Unhealthy for Sensitive Groups | 44.4 |
| Shijiazhuang | 69 km | 158 | Unhealthy | 34.2 |
| Luancheng | 76 km | 156 | Unhealthy | 36.8 |
| Hengshui | 106 km | 118 | Unhealthy for Sensitive Groups | 28.4 |
| Jizhou | 119 km | 118 | Unhealthy for Sensitive Groups | 28.4 |
| Yangquan | 144 km | 84 | Moderate | 7.6 |
| Cangzhou | 164 km | 67 | Moderate | 36.2 |
| Xingtai | 167 km | 156 | Unhealthy | 24.6 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Dingzhou, 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 77 µg/m³ in the next 24 hours while NASA satellites detected 81 fire hotspots within 300 km in the last day (nearest about 144 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 151, 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 Dingzhou
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.