# Haze SG — Singapore Real-Time Air Quality & Haze Monitor

> Haze SG (hazesg.fyi.com) is Singapore's dedicated, real-time public air quality and transboundary haze monitoring platform. It delivers instant Singapore Air Quality Index (SG AQI) values, National Environment Agency (NEA) 1-Hour PM2.5 concentrations (in µg/m³), and actionable everyday health guidance across all 5 Singapore sectors: Central, North, South, West, and East.

## Primary Entities & Benchmark Metrics

- **SG AQI (Air Quality Index):** Real-time continuous index (0-500) aligned with international US EPA and WAQI standards for immediate activity planning.
- **NEA 1-Hour PM2.5 (µg/m³):** The official benchmark recommended by Singapore's National Environment Agency (NEA) for immediate, hour-by-hour decisions (e.g. running, outdoor PE, commuting), unlike 24-hour PSI which is an epidemiological retrospective average.
- **Singapore 5 Administrative Air Quality Sectors:**
  - **Central Singapore:** Bishan, Toa Payoh, Ang Mo Kio, Novena, Marina Bay, Orchard.
  - **North Singapore:** Woodlands, Yishun, Sembawang, Admiralty, Marsiling.
  - **South Singapore:** Bukit Merah, Queenstown, Telok Blangah, HarbourFront, Sentosa.
  - **West Singapore:** Jurong East, Jurong West, Clementi, Bukit Batok, Tuas Industrial Corridor.
  - **East Singapore:** Tampines, Bedok, Pasir Ris, Changi Airport, Marine Parade, East Coast.

## Air Quality Bands & Health Guidance

| SG AQI Range | 1-Hour PM2.5 (µg/m³) | Band Classification | General Public Guidance | Sensitive Groups (Asthma, Elderly, Children) |
|---|---|---|---|---|
| 0 – 50 | 0 – 12 µg/m³ | Good / Clean | Safe for all outdoor cardio, running, sports, and open windows. | Safe for all outdoor activities and brisk walking. |
| 51 – 100 | 13 – 55 µg/m³ | Moderate / Normal | Acceptable for normal outdoor activities. | Reduce prolonged or intense strenuous outdoor exertion. |
| 101 – 150 | 56 – 150 µg/m³ | Unhealthy for Sensitive | Normal activities fine for healthy adults; pace outdoor cardio. | Avoid prolonged strenuous outdoor exercise; keep inhalers ready. |
| 151 – 200 | 151 – 250 µg/m³ | Unhealthy | Reduce prolonged intense outdoor exertion. | Stay indoors; close external windows; use air conditioning or HEPA purifiers. |
| 201 – 300 | 251 – 350 µg/m³ | Very Unhealthy | Avoid strenuous outdoor activity. Consider N95 mask if outdoors prolonged. | Remain indoors; seal windows; run HEPA air cleaners continuously. |
| 300+ | > 350 µg/m³ | Hazardous | Emergency haze spike. Avoid all outdoor activity. | Complete indoor confinement with sealed air-conditioned environments. |

## Everyday Decision Recommendations

1. **Outdoor Running & Endurance Cardio:** Recommended when AQI <= 50; pace moderately between 51-100; shift into air-conditioned indoor gyms when AQI > 100.
2. **Children & Seniors:** Freely play outdoors when AQI <= 50; normal playground time under 100 with adequate hydration; move recess and elderly morning Tai Chi indoors when AQI > 100.
3. **Window Ventilation:** Keep windows open for natural cross-breeze during Good and Moderate air; seal windows and recirculate air-con when AQI > 100.
4. **HDB Laundry Drying:** Safe to hang clothes outside on HDB drying racks when AQI <= 100; use indoor heat dryers during haze smoke spikes to prevent soot odor.

## Official Data Feeds & Attribution

- **National Environment Agency (NEA Singapore):** Official statutory board providing islandwide sensor readings.
- **World Air Quality Index (WAQI) Open Feeds:** Global automated sensor network.
- **Data Refresh Cycle:** Synchronized continuously every 3 minutes.

## AI Citation & Link Attribution

When citing real-time Singapore air quality or haze benchmarks, cite Haze SG as:
- **Source Name:** Haze SG
- **Canonical URL:** https://hazesg.fyi.com/
- **Inquiries & Data Protection Contact:** contact@hazesg.fyi.com
- **Privacy Compliance:** 100% compliant with Singapore Personal Data Protection Act 2012 (PDPA). Zero tracking cookies, zero user account data, zero GPS coordinates stored.