Air quality
Air quality in Lembang today
Updated
Unhealthy (US AQI 176) Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. Model estimate for Mon, Oct 26, 1:00 am (18:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Lembang, West Java, Indonesia, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 176 Unhealthy
- PM2.5
- 141 µg/m³ 9.4× WHO 24-h guideline
- PM10
- 144 µg/m³
- Ozone
- 5 µg/m³
- Dominant pollutant
- PM2.5 sub-index 176
- Best hour today
- 7:00 am AQI 177
- European AQI
- 100
Air quality in Lembang right now
Right now the modelled US Air Quality Index for Lembang, West Java, Indonesia is 176, 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 176. 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 141 µg/m³, 9.4 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 144 µg/m³ against a guideline of 45; ozone is 5 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 69 µg/m³ (above the 24-hour guideline of 25).
Also this hour: carbon monoxide 909 µg/m³.
Lembang AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 176 around Mon 1:00 am to 202 around Mon 6:00 pm, from "Unhealthy" at best to "Very Unhealthy" at worst.
The following day is expected to be worse, averaging about 199 against 182 for the next 24 hours.
| Local time (Asia/Jakarta) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 1:00 am | 176 | Unhealthy | 140.6 | 144 | 5 |
| Mon 4:00 am | 177 | Unhealthy | 143.4 | 146 | 1 |
| Mon 7:00 am | 177 | Unhealthy | 92.7 | 95 | 23 |
| Mon 10:00 am | 180 | Unhealthy | 58.3 | 59 | 183 |
| Mon 1:00 pm | 181 | Unhealthy | 57.5 | 59 | 228 |
| Mon 4:00 pm | 182 | Unhealthy | 68.2 | 70 | 209 |
| Mon 7:00 pm | 195 | Unhealthy | 110.6 | 112 | 77 |
| Mon 10:00 pm | 183 | Unhealthy | 172.3 | 173 | 4 |
| Tue 1:00 am | 187 | Unhealthy | 172.8 | 174 | 2 |
| Tue 4:00 am | 191 | Unhealthy | 192.8 | 194 | 0 |
| Tue 7:00 am | 197 | Unhealthy | 193.7 | 194 | 58 |
| Tue 10:00 am | 201 | Very Unhealthy | 69.8 | 71 | 219 |
| Tue 1:00 pm | 202 | Very Unhealthy | 57.7 | 58 | 217 |
| Tue 4:00 pm | 202 | Very Unhealthy | 65.9 | 67 | 143 |
| Tue 7:00 pm | 201 | Very Unhealthy | 120.6 | 121 | 16 |
| Tue 10:00 pm | 203 | Very Unhealthy | 177 | 177 | 1 |
| Wed 1:00 am | 203 | Very Unhealthy | 169 | 170 | 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 Lembang today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 7:00 am (AQI 177, Unhealthy) and the worst around 6:00 pm (AQI 202). That is a swing of 25 points, so a run or walk around 7:00 am is noticeably better.
Lembang vs the rest of Indonesia
Across 80 Indonesia cities we track, the average US AQI right now is 124 (Unhealthy for Sensitive Groups). Lembang at 176 is 52 points worse than average.
It ranks 72 of 80 from cleanest to most polluted; the cleanest is Banda Aceh (31) and the most polluted Palangkaraya (500).
For context, the median across 3,909 cities worldwide is 57.
Air quality in cities near Lembang
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Cimahi | 11 km | 176 | Unhealthy | 140.6 |
| Bandung | 12 km | 176 | Unhealthy | 140.6 |
| Padalarang | 16 km | 176 | Unhealthy | 140.6 |
| Banjaran | 26 km | 176 | Unhealthy | 140.6 |
| Soreang | 27 km | 176 | Unhealthy | 140.6 |
| Karawang | 65 km | 196 | Unhealthy | 185.3 |
| Sukabumi | 77 km | 92 | Moderate | 30.3 |
| Cikarang | 80 km | 196 | Unhealthy | 185.3 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Lembang, 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 183 µg/m³ in the next 24 hours while NASA satellites detected 30 fire hotspots within 300 km in the last day (nearest about 42 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 176, 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 Lembang
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.