Readings on 17 Aug 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	5(3)	25(25)	36(-)	10(4)	0.4(4)	14(53)
South	14(9)	28(28)	25(-)	18(8)	0.4(4)	15(55)
East	9(6)	21(21)	14(-)	17(7)	0.6(6)	12(49)
West	45(28)	31(31)	33(-)	20(9)	0.5(5)	18(57)
Central	7(4)	26(26)	30(-)	18(8)	1(10)	12(49)

1-hr PM_2.5 (µg/m³)^b Readings on 16 Aug 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	18	9	10	17	13	15	12	13	18	14	16	11
South	14	8	9	15	17	16	11	20	20	4	14	27
East	9	8	15	15	5	12	8	10	5	7	10	9
West	16	17	7	14	12	11	18	19	9	23	23	22
Central	10	9	4	9	15	11	7	11	16	10	10	21
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	17	19	24	19	17	12	12	17	10	8	11	6
South	7	21	15	19	29	6	18	22	15	12	15	15
East	8	17	13	18	17	10	13	20	13	13	13	15
West	31	26	23	29	21	26	15	13	12	12	12	17
Central	13	13	24	16	10	11	14	14	9	8	6	10

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 16 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	53	51	45	46	49	52	51	52	52	52	52	54
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	55	57	58	60	59	57	55	54	54	52	47	48

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

Contact Us

Hotline	1800 CALL NEA (1800-225 5632)
Weather	6542 7788
Fax	6235 2611
Feedback

Our Location

Main Office
Customer Service Centre
Other Offices

National Environment Agency
40 Scotts Road, #13-00
Environment Building
Singapore 228231

Customer Service Centre
40 Scotts Road #02-00
Environment Building
Singapore 228231
Customer Service Centre (Hawkers)
HDB Hub, East Wing, #26-01
480 Lorong 6 Toa Payoh
Singapore 310480