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Information about air quality in the Czech Republic
Current overview of data from automated stations (non-verified data)

Updated: 2025-03-31 13:25 CEST


Basic data Locality photo
Locality: Praha 4-Chodov
Code: ACHOA
Type of measuring programme: Automated measuring program
Locality owner: Czech Hydrometeorological Institute
Classification
Abbreviation: B/U/RN
Localization
Coordinates: 50° 1´ 48.614" North latitude 14° 31´ 2.821" East longitude
Altitude: 300 m

Actual measured level of air pollution

Actual unverified data

Date and time Air quality SO₂ NO₂ PM₁₀ O₃ PM₁₀ - from model O₃ - from model
3h average 3h average 3h average 3h average 3h average 3h average
µg∙m⁻³ µg∙m⁻³ µg∙m⁻³ µg∙m⁻³ µg∙m⁻³ µg∙m⁻³
2025-03-30 11:00 - 14:00 CEST 1A 5.2 4.0 91.4
2025-03-30 12:00 - 15:00 CEST 1A 5.8 3.3 93.5
2025-03-30 13:00 - 16:00 CEST 1A 6.5 3.3 94.2
2025-03-30 14:00 - 17:00 CEST 1A 6.7 3.2 90.8
2025-03-30 15:00 - 18:00 CEST 1A 7.4 2.9 85.0
2025-03-30 16:00 - 19:00 CEST 1A 7.9 4.4 79.9
2025-03-30 17:00 - 20:00 CEST 1A 8.5 4.7 75.5
2025-03-30 18:00 - 21:00 CEST 1A 9.4 4.8 73.3
2025-03-30 19:00 - 22:00 CEST 1A 10.8 2.6 69.1
2025-03-30 20:00 - 23:00 CEST 1A 11.5 3.7 68.6
2025-03-30 21:00 - 00:00 CEST 1A 11.3 8.5 66.1
2025-03-30 22:00 - 01:00 CEST 1A 9.7 11.2 67.9
2025-03-30 23:00 - 02:00 CEST 1A 8.2 10.9 66.9
2025-03-31 00:00 - 03:00 CEST 1A 7.4 6.4 69.4
2025-03-31 01:00 - 04:00 CEST 1A 6.9 7.9 75.0
2025-03-31 02:00 - 05:00 CEST 1A 7.7 8.5 77.4
2025-03-31 03:00 - 06:00 CEST 1A 10.7 8.8 74.2
2025-03-31 04:00 - 07:00 CEST 1A 16.4 5.7 65.7
2025-03-31 05:00 - 08:00 CEST 1A 25.7 4.8 56.5
2025-03-31 06:00 - 09:00 CEST 1A 28.0 4.6 56.6
2025-03-31 07:00 - 10:00 CEST 1A 29.3 7.3 57.1
2025-03-31 08:00 - 11:00 CEST 1A 21.3 7.8 62.3
2025-03-31 09:00 - 12:00 CEST 1A 16.5 8.3 70.5
2025-03-31 10:00 - 13:00 CEST 1A 11.1 5.9 72.0

Legend

Level Index range Air quality
     1A      ≥ 0.00 and < 0.34 very good to good
     1B      ≥ 0.34 and < 0.67
     2A      ≥ 0.67 and < 1.00 acceptable
     2B      ≥ 1.00 and < 1.50
     3A      ≥ 1.50 and < 2.00 aggravated to bad
     3B      ≥ 2.00
Component is not measured, index not determined
Incomplete data


Map of station position

Map is on page with detailed information about locality