Air quality
Air quality in Khlong Sam Wa today
Updated
Moderate (US AQI 68) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Mon, Oct 26, 8:00 am (01:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Khlong Sam Wa, Bangkok, Thailand, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 68 Moderate
- PM2.5
- 20 µg/m³ 1.3× WHO 24-h guideline
- PM10
- 22 µg/m³
- Ozone
- 44 µg/m³
- Dominant pollutant
- PM2.5 sub-index 68
- Best hour today
- 5:00 pm AQI 66
- European AQI
- 43
Air quality in Khlong Sam Wa right now
Right now the modelled US Air Quality Index for Khlong Sam Wa, Bangkok, Thailand is 68, which falls in the "Moderate" band (up to 100). Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
The index is driven mainly by PM2.5, whose own sub-index is 68. 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 20 µg/m³, 1.3 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 22 µg/m³ against a guideline of 45; ozone is 44 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 16 µg/m³ (below the 24-hour guideline of 25).
Also this hour: UV index 1.7, carbon monoxide 570 µg/m³.
Khlong Sam Wa AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 66 around Mon 5:00 pm to 83 around Tue 8:00 am, staying "Moderate" throughout.
The following day is expected to be worse, averaging about 81 against 70 for the next 24 hours.
| Local time (Asia/Bangkok) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 8:00 am | 68 | Moderate | 19.7 | 22 | 44 |
| Mon 11:00 am | 68 | Moderate | 12.7 | 15 | 117 |
| Mon 2:00 pm | 67 | Moderate | 12 | 13 | 130 |
| Mon 5:00 pm | 66 | Moderate | 15 | 16 | 110 |
| Mon 8:00 pm | 66 | Moderate | 24 | 24 | 42 |
| Mon 11:00 pm | 68 | Moderate | 40.4 | 41 | 16 |
| Tue 2:00 am | 73 | Moderate | 46.4 | 47 | 23 |
| Tue 5:00 am | 79 | Moderate | 40 | 40 | 35 |
| Tue 8:00 am | 83 | Moderate | 21.2 | 21 | 69 |
| Tue 11:00 am | 83 | Moderate | 11.8 | 12 | 133 |
| Tue 2:00 pm | 83 | Moderate | 9.6 | 10 | 122 |
| Tue 5:00 pm | 82 | Moderate | 13.4 | 14 | 91 |
| Tue 8:00 pm | 82 | Moderate | 25.7 | 26 | 28 |
| Tue 11:00 pm | 82 | Moderate | 30.7 | 31 | 22 |
| Wed 2:00 am | 79 | Moderate | 31.1 | 31 | 31 |
| Wed 5:00 am | 76 | Moderate | 26.4 | 27 | 29 |
| Wed 8:00 am | 73 | Moderate | 14.3 | 15 | 51 |
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 Khlong Sam Wa today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 5:00 pm (AQI 66, Moderate) and the worst around 6:00 pm (AQI 73). The difference across the day is small, so timing matters little.
Khlong Sam Wa vs the rest of Thailand
Across 24 Thailand cities we track, the average US AQI right now is 55 (Moderate). Khlong Sam Wa at 68 is 13 points worse than average.
For context, the median across 3,909 cities worldwide is 57.
Air quality in cities near Khlong Sam Wa
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Lat Phrao | 16 km | 56 | Moderate | 14.7 |
| Wang Thonglang | 17 km | 56 | Moderate | 14.7 |
| Chatuchak | 20 km | 56 | Moderate | 14.7 |
| Din Daeng | 20 km | 56 | Moderate | 14.7 |
| Watthana | 23 km | 56 | Moderate | 14.7 |
| Bang Sue | 23 km | 56 | Moderate | 14.7 |
| Mueang Nonthaburi | 24 km | 56 | Moderate | 14.7 |
| Khlong Toei | 25 km | 56 | Moderate | 14.7 |
Model vs measured
The nearest measured PM2.5 reading is 3.9 µg/m³ from Sensor.Community (median of 7 sensors), centred about 14 km from the city centre. That is 15.8 µg/m³ below the model estimate of 20 µg/m³. Low-cost sensors can read high in humid air; reference monitors are more accurate but sparser.
Wildfire smoke
PM2.5 is forecast to reach 46 µg/m³ in the next 24 hours while NASA satellites detected 3 fire hotspots within 300 km in the last day (nearest about 90 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 68, most people are fine outdoors. If you are unusually sensitive to PM2.5, keep long or intense workouts to the cleaner hours shown above.
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 Khlong Sam Wa
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), Sensor.Community, NASA FIRMS.