Longmont, CO 80503 Air Quality

Air quality index64Moderate

Acceptable for most people; unusually sensitive people should take it easier outdoors.

050100150200300+

Next 24 hours

US AQI

1. 65Now
2. 62
3. 59
4. 558 PM
5. 51
6. 47
7. 4711 PM
8. 47
9. 47
10. 462 AM
11. 44
12. 43
13. 435 AM
14. 42
15. 41
16. 438 AM
17. 44
18. 45
19. 4611 AM
20. 48
21. 49
22. 532 PM
23. 57
24. 61

Air quality outlook

Worst hour each day

• Today69Moderate
• Mon 1961Moderate
• Tue 2049Good
• Wed 2149Good
• Thu 2239Good

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

Live radar

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Radar Satellite Temperature Wind Feels like Air quality Lightning

About ZIP code 80503

ZIP code 80503 is Longmont, in Boulder County, Colorado. This forecast is for the centre of the ZIP area at 40.169°, -105.210°, 6 mi from central Longmont. Right now it’s 74° and mostly clear; today’s high is 74° with a 1% chance of rain.

Longmont, CO forecast

Nearby ZIP codes

80544 · Niwot, CO80501 · Longmont, CO80301 · Boulder, CO80304 · Boulder, CO80504 · Longmont, CO80513 · Berthoud, CO80540 · Lyons, CO80455 · Jamestown, CO80310 · Boulder, CO80542 · Mead, CO80026 · Lafayette, CO80302 · Boulder, CO

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