What is the air quality in Diamond Bar today?

The current Air Quality Index (AQI) in Diamond Bar is 35 (Good). PM2.5 concentration is 8.32 µg/m³.

What is the temperature in Diamond Bar right now?

The current temperature in Diamond Bar is 14.1°C (feels like 14.1°C). Humidity is 62.8% and wind speed is 45.7 km/h.

Is it safe to go outside in Diamond Bar?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Moderate).

Air Quality in Diamond Bar, United States

Drizzle

14.1°C · 62.8% humidity

14.1°

Feels 14.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated

49 7pm

46 10pm

46 1am

46 4am

46 7am

46 10am

46 1pm

21 4pm

Station readings

CAMS model adj -29

PM2.5 Trend (24h)

27h · 2 stations

62.8%

Humidity

45.7 km/h

Wind SSW

1010.9 hPa

Pressure

2.9

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Diamond Bar?

Temperature & Precipitation

PM2.58.32 µg/m³ ✓ WHO

Good

PM1027.45 µg/m³

Good

UV INDEX2.9

Moderate

What is the 7-day forecast for Diamond Bar?

04-09

20.0° 10.2°

04-10

14.1° 8.6°

12.31 mm

04-11

10.5° 6.8°

19.81 mm

04-12

7.9° 3.7°

0.88 mm

04-13

11.9° 3.3°

0.19 mm

04-14

17.9° 7.2°

04-15

19.8° 12.0°

Both models agree Avg diff: 4.9°C

Where are air quality stations near Diamond Bar?

Glendora-Laurel, Los Angeles

13.4 km

What cities are near Diamond Bar?

31 Walnut 44 Pomona 48 Chino Hills 53 San Dimas 50 South San Jose Hills 58 La Verne 50 Covina 45 Rowland Heights 45 Claremont 52 Chino

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:12 UTC.