Air quality
Air quality in Weinan today
Updated
Unhealthy for Sensitive Groups (US AQI 122) People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. Model estimate for Mon, Oct 26, 2:00 am (18:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Weinan, Shaanxi, China, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 122 Unhealthy for Sensitive Groups
- PM2.5
- 62 µg/m³ 4.1× WHO 24-h guideline
- PM10
- 69 µg/m³
- Ozone
- 0 µg/m³
- Dominant pollutant
- PM2.5 sub-index 122
- Best hour today
- 2:00 pm AQI 93
- European AQI
- 66
Air quality in Weinan right now
Right now the modelled US Air Quality Index for Weinan, Shaanxi, China is 122, which falls in the "Unhealthy for Sensitive Groups" band (up to 150). People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.
The index is driven mainly by PM2.5, whose own sub-index is 122. 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 62 µg/m³, 4.1 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 69 µg/m³ against a guideline of 45; ozone is 0 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 56 µg/m³ (above the 24-hour guideline of 25).
Also this hour: carbon monoxide 1033 µg/m³.
Weinan AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 89 around Tue 2:00 am to 122 around Mon 2:00 am, from "Moderate" at best to "Unhealthy for Sensitive Groups" at worst.
The following day is expected to be cleaner, averaging about 89 against 100 for the next 24 hours.
| Local time (Asia/Shanghai) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 2:00 am | 122 | Unhealthy for Sensitive Groups | 62.2 | 69 | 0 |
| Mon 5:00 am | 118 | Unhealthy for Sensitive Groups | 34.7 | 35 | 4 |
| Mon 8:00 am | 104 | Unhealthy for Sensitive Groups | 18.6 | 19 | 16 |
| Mon 11:00 am | 96 | Moderate | 18 | 19 | 20 |
| Mon 2:00 pm | 93 | Moderate | 19.4 | 21 | 29 |
| Mon 5:00 pm | 93 | Moderate | 22.8 | 27 | 37 |
| Mon 8:00 pm | 94 | Moderate | 30.9 | 39 | 30 |
| Mon 11:00 pm | 94 | Moderate | 34.9 | 47 | 22 |
| Tue 2:00 am | 89 | Moderate | 31.5 | 52 | 20 |
| Tue 5:00 am | 82 | Moderate | 32.4 | 57 | 13 |
| Tue 8:00 am | 84 | Moderate | 39 | 70 | 16 |
| Tue 11:00 am | 88 | Moderate | 31 | 54 | 35 |
| Tue 2:00 pm | 91 | Moderate | 25.7 | 49 | 53 |
| Tue 5:00 pm | 92 | Moderate | 23.2 | 49 | 54 |
| Tue 8:00 pm | 92 | Moderate | 28.1 | 48 | 28 |
| Tue 11:00 pm | 91 | Moderate | 29 | 47 | 21 |
| Wed 2:00 am | 89 | Moderate | 27.2 | 44 | 25 |
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 Weinan today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 2:00 pm (AQI 93, Moderate) and the worst around 6:00 am (AQI 114). That is a swing of 21 points, so a run or walk around 2:00 pm is noticeably better.
Weinan vs the rest of China
Across 467 China cities we track, the average US AQI right now is 84 (Moderate). Weinan at 122 is 38 points worse than average.
It ranks 399 of 467 from cleanest to most polluted; the cleanest is Hulunbuir (21) and the most polluted Artux (264).
For context, the median across 3,909 cities worldwide is 57.
Air quality in cities near Weinan
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Xi’an | 60 km | 182 | Unhealthy | 71 |
| Tongchuan | 67 km | 157 | Unhealthy | 55.6 |
| Tongchuanshi | 74 km | 157 | Unhealthy | 55.6 |
| Xianyang | 76 km | 182 | Unhealthy | 71 |
| Yintai | 78 km | 157 | Unhealthy | 55.6 |
| Shangluo | 81 km | 72 | Moderate | 11.6 |
| Yongji | 94 km | 113 | Unhealthy for Sensitive Groups | 38.2 |
| Hancheng | 135 km | 137 | Unhealthy for Sensitive Groups | 35.4 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Weinan, 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.
Advice for sensitive groups
At 122, 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 Weinan
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).