Air quality
Air quality in Diadema today
Updated
Moderate (US AQI 62) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Sun, Oct 25, 5:38 pm (20:38 UTC).
Live AQI, PM2.5, PM10 and ozone for Diadema, São Paulo, Brazil, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 62 Moderate
- PM2.5
- 8.9 µg/m³ 0.6× WHO 24-h guideline
- PM10
- 10 µg/m³
- Ozone
- 59 µg/m³
Air quality in Diadema right now
Right now the modelled US Air Quality Index for Diadema, São Paulo, Brazil is 62, which falls in the "Moderate" band (up to 100). Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
PM2.5 is 8.9 µg/m³, within the WHO 24-hour guideline of 15 µg/m³; PM10 is 10 µg/m³ against a guideline of 45; ozone is 59 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 13 µg/m³ (below the 24-hour guideline of 25).
Diadema vs the rest of Brazil
Across 144 Brazil cities we track, the average US AQI right now is 54 (Moderate). Diadema at 62 is 8 points worse than average.
It ranks 117 of 144 from cleanest to most polluted; the cleanest is Caxias do Sul (24) and the most polluted Manaus (139).
For context, the median across 3,556 cities worldwide is 58.
Air quality in cities near Diadema
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| São Bernardo do Campo | 6 km | 62 | Moderate | 8.9 |
| Santo André | 9 km | 62 | Moderate | 8.9 |
| São Caetano do Sul | 10 km | 62 | Moderate | 8.9 |
| São Paulo | 15 km | 55 | Moderate | 7.5 |
| Mauá | 17 km | 62 | Moderate | 8.9 |
| Ribeirão Pires | 22 km | 62 | Moderate | 8.9 |
| Osasco | 24 km | 55 | Moderate | 7.5 |
| Guarulhos | 26 km | 62 | Moderate | 8.9 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Diadema, 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 62, most people are fine outdoors. If you are unusually sensitive to air pollution, 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 Diadema
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).