Air at the HUM (otok Vis) station
Komiža, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0018A
This year, up to the last reading (September 29)
at least
98 days
with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.
The target value allows 25 such days a year, averaged over three years.
Worst day: April 27, 2026, O₃ 162 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 246 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
No data has arrived from this station since September 29, 2026 at 14:00
No reading for 8 days.
We take the readings from the European Environment Agency (EEA), and no new values for this station are coming from there. The cause may lie with the station itself or with the data transmission.
Last reading: September 29, 2026 at 14:00
Measured then: O₃ 123.2 µg/m³
Nearest station measuring now: Split-3, Split, Croatia, about 59 km away.
That reading is from another place. Your air may be better or worse.
How the air is changing
There are not enough readings to compare with the week before.
- O₃: too few readings to compare
Last month there was less O₃ in the air than the month before.
- O₃: average 102 µg/m³, month before 117.1 µg/m³
Ozone O₃
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
too few readings
Last 7 days
measured in 0 % of hours
too few readings
Last 30 days
measured in 74 % of hours · provisional
too few readings
Last 12 months
measured in 89 % of hours · 1 month with too few readings · provisional
Days in 2023: O₃, 8-hour average above 120 µg/m³
82 days above the limit.
- above the limit
- below the limit
- too few readings for the day
Days above the limit with values (82)
- Mar 24 135
- Mar 25 132
- Apr 7 122
- Apr 8 121
- Apr 12 131
- Apr 13 129
- Apr 23 120
- Apr 29 120
- Apr 30 121
- May 6 121
- May 7 137
- May 8 130
- May 9 126
- May 22 122
- May 23 135
- May 24 134
- May 25 125
- May 27 120
- May 28 124
- May 29 120
- Jun 2 121
- Jun 3 121
- Jun 9 125
- Jun 10 129
- Jun 11 122
- Jun 16 124
- Jun 17 135
- Jun 18 141
- Jun 19 144
- Jun 20 149
- Jun 21 157
- Jun 23 132
- Jul 1 122
- Jul 2 127
- Jul 3 127
- Jul 8 131
- Jul 9 139
- Jul 10 136
- Jul 11 138
- Jul 12 146
- Jul 13 142
- Jul 14 132
- Jul 15 124
- Jul 16 125
- Jul 17 127
- Jul 18 129
- Jul 19 124
- Jul 20 130
- Jul 21 130
- Jul 25 130
- Jul 26 129
- Jul 28 145
- Jul 29 155
- Jul 30 126
- Jul 31 122
- Aug 12 125
- Aug 13 131
- Aug 14 131
- Aug 15 135
- Aug 16 138
- Aug 17 133
- Aug 18 123
- Aug 19 121
- Aug 20 131
- Aug 21 134
- Aug 22 136
- Aug 23 130
- Aug 24 145
- Aug 25 134
- Aug 27 123
- Aug 28 121
- Sep 6 121
- Sep 7 122
- Sep 8 128
- Sep 9 129
- Sep 10 129
- Sep 12 127
- Sep 14 133
- Sep 28 123
- Oct 8 139
- Oct 9 135
- Oct 10 128
Values in µg/m³, limit 120 µg/m³.
Months of 2023
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 88 | 0 |
| February | 0 | 109 | 0 |
| March | 2 above the number allowed | 135 | 0 |
| April | 7 above the number allowed | 131 | 0 |
| May | 11 above the number allowed | 137 | 0 |
| June | 12 above the number allowed | 157 | 0 |
| July | 23 above the number allowed | 155 | 0 |
| August | 16 above the number allowed | 145 | 0 |
| September | 8 above the number allowed | 133 | 0 |
| October | 3 above the number allowed | 139 | 0 |
| November | 0 | 96 | 0 |
| December | 0 | 89 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 116 | model estimate, not counted |
| 20:00 | 114 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 116 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 114 | model estimate, not counted |
| 15:00 | 114 | model estimate, not counted |
| 14:00 | 112 | model estimate, not counted |
| 13:00 | 112 | model estimate, not counted |
| 12:00 | 110 | model estimate, not counted |
| 11:00 | 109 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 107 | model estimate, not counted |
| 07:00 | 110 | model estimate, not counted |
| 06:00 | 110 | model estimate, not counted |
| 05:00 | 110 | model estimate, not counted |
| 04:00 | 110 | model estimate, not counted |
| 03:00 | 109 | model estimate, not counted |
| 02:00 | 109 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Monday, 10/5 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Sunday, 10/4 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Saturday, 10/3 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Friday, 10/2 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Thursday, 10/1 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | no data from the station | |
| Mon, 10/5 | no data from the station | |
| Sun, 10/4 | no data from the station | |
| Sat, 10/3 | no data from the station | |
| Fri, 10/2 | no data from the station | |
| Thu, 10/1 | no data from the station | |
| Wed, 9/30 | no data from the station | |
| Tue, 9/29 | too few readings | |
| Mon, 9/28 | 108.2 | provisional |
| Sun, 9/27 | 108.6 | provisional |
| Sat, 9/26 | 102.2 | provisional |
| Fri, 9/25 | 99.5 | provisional |
| Thu, 9/24 | 93.3 | provisional |
| Wed, 9/23 | 88.9 | provisional |
| Tue, 9/22 | 92.9 | provisional |
| Mon, 9/21 | 106.6 | provisional |
| Sun, 9/20 | 112.1 | provisional |
| Sat, 9/19 | 121.9 | above the limit · provisional |
| Fri, 9/18 | 116.2 | provisional |
| Thu, 9/17 | 114 | provisional |
| Wed, 9/16 | 103 | provisional |
| Tue, 9/15 | 98.6 | provisional |
| Mon, 9/14 | 101.3 | provisional |
| Sun, 9/13 | 105.7 | provisional |
| Sat, 9/12 | 100.6 | provisional |
| Fri, 9/11 | 100.3 | provisional |
| Thu, 9/10 | 107.5 | provisional |
| Wed, 9/9 | 116.1 | provisional |
| Tue, 9/8 | 126.4 | above the limit · provisional |
| Mon, 9/7 | 135.2 | above the limit · provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | too few readings | 81.1 | year before: same days · 6 days without data from the station |
| September 2026 | 102 | 92.1 | measured in 94 % of hours · provisional · 1 day without data from the station |
| August 2026 | 117.1 | 113.1 | measured in 91 % of hours · provisional · 2 days without data from the station |
| July 2026 | 124 | 112.2 | measured in 97 % of hours · provisional |
| June 2026 | 114 | 118.6 | measured in 86 % of hours · provisional |
| May 2026 | 116.7 | 106.9 | measured in 91 % of hours · provisional |
| April 2026 | 116.1 | 98.8 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 99 | 92.5 | measured in 99 % of hours · provisional |
| February 2026 | 89.7 | 86.7 | measured in 100 % of hours · provisional |
| January 2026 | 83.8 | 78.7 | measured in 94 % of hours · provisional |
| December 2025 | 72.8 | 73.2 | measured in 97 % of hours · verified |
| November 2025 | too few readings | 77 | measured in 48 % of hours · verified · 14 days without data from the station |
O₃ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days with 8-hour average above 120 µg/m³ (target value 25) | ≥ 98 | ≥ 59 | ≥ 49 |
| Annual average, µg/m³ | 106.8* | 95.5 | too few |
| Highest 8-hour average, µg/m³ | 162April 27 | 166July 5 | 149August 26 |
| Hours measured | 92 % | 92 % | 87 % |
| Days without any reading from the station | 10 | 21 | 30 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.
■ and a figure in red: more than is allowed for the whole year.
The column for 2023 is shown on wider screens.
The worst days of 2023
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Jun 21, 2023 | 157 | 1.3 × |
| Jul 29, 2023 | 155 | 1.3 × |
| Jun 20, 2023 | 149 | 1.2 × |
| Jul 12, 2023 | 146 | 1.2 × |
| Aug 24, 2023 | 145 | 1.2 × |
Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.
Outages in the last 12 months
Every period of at least 24 hours in which no reading arrived from this station.
Days without a reading: 32
7 outages, 756 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Sep 29, 2026 14:00 | still ongoing | 8 days |
| Aug 11, 2026 14:00 | Aug 14, 2026 09:00 | 3 days |
| Jun 27, 2026 17:00 | Jun 28, 2026 18:00 | 25 hours |
| Jun 4, 2026 09:00 | Jun 5, 2026 10:00 | 25 hours |
| Apr 5, 2026 10:00 | Apr 7, 2026 10:00 | 2 days |
| Jan 15, 2026 06:00 | Jan 16, 2026 10:00 | 28 hours |
| Nov 13, 2025 06:00 | Nov 28, 2025 08:00 | 15 days |
Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.
Where the data comes from
Measured by Državna mreža za trajno praćenje kvalitete zraka. We take the values from the European Environment Agency (EEA) under the CC BY 4.0 licence.
Values marked provisional have not been fully checked by the network yet. The EEA publishes verified data for the previous year once a year, usually by the end of September.
An hourly value is the average of one hour. We show the end of the hour: the value to 18:00 was measured from 17:00 to 18:00.
A day runs from midnight to midnight local time.
We only show an average when at least three out of four hours in the period have a reading. The EU air quality directive requires this for daily averages, and we apply the same rule to longer periods. We compare an annual average with the EU limit only once 90 % of hours are measured, as the directive requires. For 12 months and for a year we ask for more: if less than 90 % of hours are measured, every full calendar month needs readings for at least half of its hours. Otherwise a whole season could be missing from the average, such as summer, when ozone is highest.
We do not call a difference of up to 10 % a change, nor one of up to 1 µg/m³ at low levels, because weather and measurement uncertainty alone cause differences that size.
When a station sends no reading, the EEA sometimes fills the hour with a model estimate. We draw those hours dashed and leave them out of every average.
The EU limits come from Directive 2008/50/EC. Here they serve as a yardstick for comparison. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.
samoEKO is a brand of samoLabs, Juelich.