London
United Kingdom
12:00:00 PM
Tuesday, Sep 8
17°C
(63°F)
World Clock & Weather by City
Free client-side world clock, timezone converter, and climatological weather dashboard with meeting overlap slider.
New York
United States
12:00:00 PM
Tuesday, Sep 8
22°C
(72°F)
Tokyo
Japan
12:00:00 PM
Tuesday, Sep 8
26°C
(79°F)
Paris
France
12:00:00 PM
Tuesday, Sep 8
21°C
(70°F)
Sydney
Australia
12:00:00 PM
Tuesday, Sep 8
18°C
(64°F)
Dubai
United Arab Emirates
12:00:00 PM
Tuesday, Sep 8
36°C
(97°F)
Singapore
Singapore
12:00:00 PM
Tuesday, Sep 8
31°C
(88°F)
San Francisco
United States
12:00:00 PM
Tuesday, Sep 8
19°C
(66°F)
Berlin
Germany
12:00:00 PM
Tuesday, Sep 8
20°C
(68°F)
Hong Kong
China
12:00:00 PM
Tuesday, Sep 8
30°C
(86°F)
Toronto
Canada
12:00:00 PM
Tuesday, Sep 8
21°C
(70°F)
São Paulo
Brazil
12:00:00 PM
Tuesday, Sep 8
23°C
(73°F)
About this tool
How to use it
- View live local times, UTC offsets, day/night daylight cycles, and current weather across major global cities.
- Toggle between Celsius (°C) and Fahrenheit (°F) for instant international temperature conversions.
- Use the 24-Hour Time Slider to project future hours and identify ideal meeting overlap windows across time zones.
- Filter cities by name or region (Americas, Europe, Asia-Pacific, Middle East) to customize your dashboard view.
Why it matters
Remote software teams, international business executives, and globetrotting travelers need an instant, ad-free dashboard showing both exact time zone offsets and ambient local weather conditions without cluttered weather app widgets or intrusive geolocation trackers.
When to use it
Use when scheduling international client calls, checking weather conditions before boarding a long-haul flight, monitoring distributed engineering teams, or coordinating global software release cutovers.
Common questions
How does the tool calculate local time zones without an external API?
It uses the native browser Internationalization API (Intl.DateTimeFormat) and the standard IANA time zone database embedded directly into modern web browsers, guaranteeing precision and automatic Daylight Saving Time (DST) handling.
How are the weather temperatures and conditions calculated?
Weather conditions, humidity, and temperatures are generated using high-fidelity seasonal climate baselines, solar zenith ephemeris models, and local diurnal temperature variations based on each city's exact latitude and time of day.
Can I convert meeting times across multiple time zones at once?
Yes. Drag the 24-Hour Interactive Time Slider; every city card instantly updates to reflect that hour with visual indicators for working hours, evening leisure, and sleep periods.
Does this tool track my physical location?
No. The entire engine runs 100% locally inside your web browser with zero geolocation queries, zero IP tracking, and zero external network requests.